Weight Indicator TAD 3

Weight Indicator TAD 3
GB
Weight Indicator
TAD 3
From prog. name T002L240
Technical Manual
Weight Indicator TAD 3
Contents
1. Introduction
6. Communication
Mechanical installation ............... 2-1
Electrical installation .................. 2-1
Front panel ................................. 2-4
Communication interface .................. 6-1
Transmission principles .................... 6-1
I/O bus .............................................. 6-1
Modbus ............................................. 6-2
Register description .......................... 6-2
Set-up register description .............. 6-13
I/O bits (Coils) ................................. 6-14
Data representation ........................ 6-15
Exception responses ...................... 6-17
Supported Modbus functions .......... 6-18
External display .............................. 6-19
Printing ............................................ 6-21
3. Set-up
7. Batching (program option)
Legal weighing ........................... 1-1
Options ....................................... 1-1
Functions ................................... 1-2
Technical data ............................ 1-4
Additional units ........................... 1-6
Accessories ................................ 1-7
2. Installation
General ...................................... 3-1
Menu ‘Show set-up’ .................... 3-1
Complete set-up ......................... 3-3
Parameters ................................. 3-7
Program options ....................... 3-34
Legal lock ................................. 3-34
4. Calibration
Common parameters ................. 4-2
Data sheet calibration ................ 4-4
Shunt calibration ........................ 4-5
Table calibration ......................... 4-6
Deadweight calibration ............... 4-7
5. Operation
General ...................................... 5-1
Power supply .............................. 5-1
Power-up sequence ................... 5-1
Display alternatives
by normal operation ................... 5-2
Security locks ............................. 5-3
Taring ......................................... 5-4
Gross/Net operation ................... 5-5
Zero setting ................................ 5-5
Zero-tracking/
Automatic zero setting ............... 5-6
Motion ........................................ 5-6
Print function .............................. 5-7
Main menu ................................. 5-8
Level supervision ..................... 5-10
Setpoint function ...................... 5-12
Use of inputs and outputs ......... 5-13
Filter function ........................... 5-14
I/O bus connection ................... 5-16
General ............................................. 7-1
Front panel ........................................ 7-1
Batching principles ............................ 7-1
Activity description ............................ 7-4
Batching parameters ....................... 7-11
Operation ........................................ 7-25
Batching alarms .............................. 7-29
Serial communication ..................... 7-30
8. Flow rate (program option)
General ............................................. 8-1
Operation .......................................... 8-1
Flow rate parameters ........................ 8-2
Hints and examples .......................... 8-5
9. Additional units
General ............................................. 9-1
DIO 3R. Digital input/output unit ....... 9-2
ANA 3. Analogue output unit ............ 9-6
10. Troubleshooting
General ........................................... 10-1
Diagnostics ..................................... 10-1
Error codes ..................................... 10-5
Appendices
Set-up list for TAD 3 .................... App. 1
Batch parameters for TAD 3 ........ App. 2
Declaration of Conformity ............ App. 3
Technical Manual
Weight Indicator TAD 3
1. Introduction
TAD 3 is a high performance weight indicator intended for industrial systems.
Its basic function is to convert the signals from strain gauge transducers to useful
weight information. Transducer excitation is included as well as parameter controlled
signal processing, indication of output levels, error supervision and operation of
optional external equipment.
Two internal relays in TAD 3 can be used for output functions from level supervision,
setpoints, etc. or ‘In process’ indication, reporting the operating status of TAD 3.
TAD 3 has two serial communication ports and can handle options such as analogue
outputs, digital inputs and outputs, external serial ports, and a fieldbus gateway.
Several TAD 3 units can be controlled from a master computer or PLC via a serial
RS-485 communication interface using Modbus protocol.
It is also possible to load new software into TAD 3 using the serial interface.
All functions in TAD 3 are controlled by set-up parameters. Setting of parameter
values can be performed with keys and display on the front panel, or via serial
communication. A Windows programme for parameter set-up is delivered on a
diskette together with TAD 3.
TAD 3 and all external equipment are powered by 24 V DC. All input and output signals
are galvanically isolated from each other and from the power supply.
Legal weighing
TAD 3 is type tested according to the weighing directive 90/384/EEC and has a
Test Certificate (TC), validating the use of TAD 3 as an indicator of a non-automatic
weighing instrument (other parts are load cells and mechanics) for legal weighing.
The TC is in accordance with class III 10000 divisions, industrial use,
EN 45501:1992/AC:1993 and WELMEC 2.1. This makes legal weighing possible and
TAD 3 includes different levels of security locks, that can be used in a quality system
(ISO 9000). An additional manual, appropriate labels and Test Certificate (TC) for
legal weighing installation can be requested.
Options
Optional functions for batching are included in the Weight Indicator TAD 3 from
programme T001(A)120 on.
Optional functions for batching and flow rate are included in
the Weight Indicator TAD 3 from programme T002(A)200 on.
These functions are activated by entry of special codes that can be ordered
from Nobel Weighing Systems.
Additional units with an analogue output or with digital I/O units and a serial port for
external equipment are available. These units are described in section 9.
1-1
Technical Manual
Functions
Measurement with strain gauge transducers.
Both excitation voltage and output signal are measured at the transducer to avoid
influence from voltage drop in the connection cable. Excitation to the transducer, from
TAD 3 or from an external DC-power supply, is provided over separate wires.
A shielded 7-wire cable must be used to connect a distant transducer to TAD 3.
A/D conversion.
The analogue signals from the transducer are converted to digital form and filtered to
give an internal transducer signal with high resolution.
Calculation.
The transducer excitation and signal values are combined to form an internal
transducer signal, representing the load on the transducer. Influenced by calibration
data, this signal is converted to a digital measurement value, the weight value, that
can be presented at the local display window and at external equipment.
Error supervision.
As long as the error supervision detects no error, the signal ‘In process’ is present
but if an error is detected, ‘In process’ will be off and a specific error message will be
displayed. ‘In process’ can be set to control any digital output.
Levels.
Eight level comparators in TAD 3 can be set to switch at defined signal levels with any
selected hysteresis added, meaning that the switch level can be different for increasing
and decreasing signal. Output signals from these comparators are available on the
serial communication. The level comparator outputs can also be set to control digital
outputs from TAD 3 or external I/O units.
Panel
TAD 3
Parameters / Modes
Error
Supervision
Serial
Communication
Modbus RTU,
external display
or printer.
Serial
Communication
Optional I/O,
Modbus RTU,
external display
or priner.
Transducer
mV/V
Weight
A/D
Calculation
Conversion
Excitation
24 VDC
Weight
Compare
Levels
Digital output
DC / DC
Figure 1. The Weight Indicator TAD 3 converts analogue transducer signals
into precise measurement information, available by serial communication
for use in industrial processes.
1-2
Weight Indicator TAD 3
Serial communication.
TAD 3 utilises the serial interface RS-232, or RS-485/RS-422 on 2-wires or 4-wires, for
communication with control computer, optional I/O units, or other external equipment.
Set-up and calibration parameter values, weight values, level status, error status etc. is
transmitted, using the Modbus protocol.
Instrument modes.
In normal operation mode TAD 3 is presenting the measurement value at
the front panel.
For editing of the set-up parameters that control the operation, TAD 3 must be switched
over into set-up mode where normal measuring operations are interrupted.
If an error is detected, TAD 3 automatically switches over to the error mode, displaying
an error message, normal measuring functions will be interrupted, all digital outputs will
be deactivated, analogue outputs will be set to 0 V / 0 mA and the signal ‘In process’
will be deactivated.
Parameter setting.
In TAD 3 all operating functions are controlled by set-up parameters with numerical
values, string values, or pre-selected values from a list of alternatives. Parameter
set-up is performed by the keys at the front panel of TAD 3, or by serial communication
with Modbus from an external control unit.
Presentation.
TAD 3 can present measured or calculated values, status of levels, parameter settings
etc. at the front panel, and the values can be transferred to external equipment by
serial communication. An extensive system of menus gives the possibility to present
various information about the instrument.
RS-485/
RS-422
TAD 3
RS-485/
RS-422
RS-485/
RS-422 External
PC/PLC
display
TAD 3
I/O unit
RS-485/RS-422
RS-485/
RS-422
Printer
PLC
I/O unit
Figure 2. TAD 3 utilises serial communication to carry out
different operational tasks.
1-3
Technical Manual
Technical data
Transducer input
Transducers
Excitation
Signal input
Sensitivity
Sense input
Max. 8, 350 ohms each.
Depending on the number of 350 ohms transducers connected:
9.7 VDC ±5 % with 1 transd.
9.4 VDC ±5 % with 2 transd.
8.4 VDC ±5 % with 3 transd.
7.6 VDC ±5 % with 4 transd.
6.4 VDC ±5 % with 6 transd.
5.5 VDC ±5 % with 8 transd.
Bipolar up to 3.3 mV/V.
0.3 μV/div (0.5 μV/div at legal weighing)
1.5 – 10 VDC.
Conversion
A/D conversion
13 800 000 counts. Patented own design.
Temperature influence
Gain
<± 1.5 ppm/°C of shown weight.
Zero
<± 0.01 µV/°C.
Noise
<0.15 µV p-p during 60 s.
Linearity
<± 20 ppm of range.
Repeatability
<± 10 ppm of range.
Graduation
1, 2, 5, with 0 to 3 decimals and 10, 20 or 50.
Conversion
Ratiometrically integrating, 0.5 to 50 conversions per second.
Resolution
10 000 / 1 000 000 divisions (fastest / slowest conversion rate
at input signal: 1.0 mV/V).
Filter
Adaptive digital filter.
Step response
3 – 11 updates.
Fastest update rate:
50 Hz.
Slowest conversion rate:
0.5 Hz.
Linearisation
Can be calibrated in 6 points.
Serial communication, Com 1
Used for Modbus RTU communication, fieldbus communication (via GATE 3), remote
display or printer.
Interface
RS-485/RS-422 or RS-232 with D-sub.
Baud rate
Up to 115.2 kbaud.
Response times:
Modbus
> 3 ms (Baud rate > 38400 => > 1 ms).
Modbus Auto
> 0.5 ms.
Serial communication, Com 2
Used for Modbus RTU communication, fieldbus communication (via GATE 3), optional
I/O units, remote display or printer.
Interface
RS-485/RS-422.
Baud rate
Up to 460 kbaud.
Response times:
Modbus
> 3 ms (Baud rate > 38400 => > 1 ms).
Modbus Auto
> 0.5 ms.
Digital inputs
Number of inputs
High voltage range
Low voltage range
Input current
1-4
2.
19 – 29 VDC.
0 – 6 VDC.
6 mA at 24 V in.
Weight Indicator TAD 3
Relay outputs
Number of relays
2
Relay load
Max 1 A, 30 V AC or DC.
Spark suppression required at inductive load.
Calibration
Methods
Data sheet, Shunt (with internal 80kohm resistor),
Table or Deadweight.
Calendar clock
Internal real time clock with backup battery.
Power supply
Supply voltage
24 VDC ±20 %, 8 W.
Environmental
Temperature range
Rated performance
Storage
–10 to +50 °C.
–25 to +85 °C.
CE conformity
EMC, industrial for process control.
Mechanical data
Front panel
Panel cut-out
Depth behind panel
Panel thickness
Protection
100 x 200 mm (may replace E-1-TAD/E-2-TAD).
92 x 186 mm, r <5 mm (may replace E-1-TAD/E-2-TAD).
135 mm. Add 50 mm if D-sub connector is used for RS-232.
Up to 10 mm.
IP65 at the front end by panel mounting.
Front panel
248 x 60 pixel graphic LCD with backlighting.
10 keys for digit and character entry,
– sign, decimal point, ENTER,
4 function keys, Tare, Gross/Net, Print, Zero.
Panel thickness
max. 10 mm
123
135
185
Cables
6
D-sub connector
and cables
Display
Keys
Panel cut-out
r<5
+0.8
92 - 0
186
+1.1
-0
Figure 3. Mechanical dimensions and panel cut-out for TAD 3.
1-5
Technical Manual
Additional units
Separate units, rail mounted on DIN 46 277/3 or DIN EN 50022 (35 mm), connected to
output Com 2 of TAD 3. The units should be supplied by 24 VDC.
DIO 3R
Digital I/O + serial port RS-485
One or two units can be connected to Com 2 on TAD 3.
Switches to set the unit to ‘Dig.I/O 1’ or ‘Dig.I/O 2’.
Inputs
voltage, current
transition levels
Outputs
8 per unit.
24 VDC nom. at 13 mA input current.
17.5 V low to high, 11 V high to low.
8 closing relays, 250 VAC or 125 VDC, max. 1 A.
Spark suppression required at inductive load.
Serial communication port RS-485 (I/O bus)
Baud rate
Max. 460.8 kbaud.
Application
Connection to control host TAD 3.
Extra serial communication port RS-485 (Com 3 or Com 4)
Baud rate
Max. 115.2 kbaud.
Application
Modbus, remote display or printer.
Switches for line termination and fail safe.
Power
24 VDC ±20 %, 5 W.
Mechanical size
75 x 150 x 110 mm.
ANA 3
Analogue output unit
One or two units can be connected to TAD 3.
Internal jumper to set ‘Analogue output 1’ or ‘Analogue output 2’.
Analogue output
Bipolar voltage or current output:
Voltage output
±10 V over 500 ohms or more.
Current output
±20 mA in 500 ohms or less.
Configured (bipolar, monopolar, 4–20 mA) by set-up parameters in TAD 3.
Resolution
16 bits.
Linearity
< 0.01 % of range.
Zero drift
< 0.005 % of range / °C.
Gain drift
< 0.003 % of actual value / °C.
Update rate
As in TAD 3, however max. 25 Hz.
Can be set slower by set-up parameter in TAD 3.
Serial communication port RS-485 (I/O bus)
Baud rate
Max. 115.2 kbaud.
Application
Connection to control host TAD 3.
Power
24 VDC ±20 %, 5 W.
Mechanical size
75 x 100 x 110 mm.
1-6
Weight Indicator TAD 3
Accessories
GATE 3S
Fieldbus unit
See separate data sheet.
1-7
Technical Manual
Figure 5. Connectors at the rear of TAD 3.
Figure 6. A transducer may be connected directly to terminals at TAD 3.
For several transducers or long distance, a junction box
and lengthenig cable is needed.
1-8
Weight Indicator TAD 3
2. Installation
Mechanical installation
Weight Indicator TAD 3 is designed with a smooth housing, mainly for panel mounting.
It fits into the same panel cut-out as for Weight Indicator E-1-TAD and E-2-TAD.
An integrated gasket at the instrument front gives a sealed attachment to mounting
panels, up to 10 mm thick.
See figure 3 for mechanical dimensions.
Electrical installation
All electrical connections to the TAD 3 unit, including possible connection to ground,
are made via plug-in terminal blocks with polarisation tabs and a D-sub connector.
The installation must be carried out with shielded cables, routed to avoid
electromagnetic interference from power cables.
The inputs and outputs for TAD 3 are galvanically isolated from each other
to facilitate connection of various external equipment.
Transducer input
Terminals 1 – 8.
Transducer connection should be handled with great care to achieve good
measuring data. Integrated transducer cables may not be shortened.
NOTE! Transducer cables must be routed at least 200 mm away from 230/380 V,
50/60 Hz power cables. By cables with other frequencies or high power, an even
wider distance is preferable.
4-wire connection can be used if the integrated transducer cable is long
enough to be connected directly at TAD 3. By 4-wire connection, some
terminals at TAD 3 must be interconnected as shown in figure 6.
The cable shield and terminal 5 must be connected to earth in one point.
7-wire connection should be used if the integrated cable must be lengthened or
if several transducers should be connected to one TAD 3 unit.
The cable shields and terminal 5 must be connected to earth in one point.
In the junction box SL-4 from Nobel Weighing Systems, see figure 6, all
necessary terminals and interconnections are provided.
2-1
Technical Manual
Power supply
Terminals 22, 23.
The weight indicator TAD 3 should be
powered by 20 – 28 V DC, see Technical data,
connected according to the diagram.
Nobel Weighing Systems provides a range of
mains operated power supplies, intended
for various numbers of TAD 3 units.
Digital inputs
Terminals 9 – 11.
Two digital inputs are provided, with functions
that can be set in the TAD 3 set-up.
Relay outputs
Terminals 24 – 26 and 27 – 29.
Two digital (relay) outputs are provided with
contact rating given in Technical data.
When the relays are used, the operator has to observe
the requirements of interference emission for electrical
and electronic devices (EN 50081) on the contact side
and take appropriate measures, if necessary.
2-2
Weight Indicator TAD 3
Serial communication Com 1
Communication port Com 1 can be used
for serial communication with:
computer/PLC (Modbus), printer,
or external display unit.
Connection alternatives:
Terminals 17 – 21.
Serial communication interface:
RS-485/RS-422 for 2-wire or 4-wire
with common earth (COM).
The communication lines must have
120 ohm termination at both ends.
or
9-pole D-sub (socket at TAD 3).
Serial communication interface:
RS-232. Point to point, only
one TAD 3 unit
connected to the
computer/PLC,
printer, or external
display unit.
Serial communication Com 2
Terminals 12 – 16.
Serial communication interface:
RS-485/RS-422 for 2-wire or 4-wire with
common earth (COM).
The communication lines must have
120 ohm termination at both ends.
Communication port Com 2 should be
used for serial communication with:
computer/PLC (Modbus), printer,
external display unit,
or additonal I/O units.
2-3
Technical Manual
Front panel
The instrument has a flat, waterproof front panel with a backlighted LCD display,
function keys, symbol keys, and keys for entry of numbers and letters.
Display
At normal operation TAD 3 displays a weight value digitally (the text Net is added for
net weight) and, in most cases, the gross weight as a graphic bar.
Presentation, together with the weight value, of date and time, preset tare, status for
digital I/O’s or status for the level supervision can also be selected.
If an error occurs, the weighing function is stopped and the instrument switches over
to Error mode, indicating a code for the error at the display window.
TAD 3 can be switched to information mode, displaying a Main menu with sub menus
for display of actual data and entry of new data. In these sub menus a triangular
blinking cursor, controlled by the function keys, is used to select menu and
parameter.
Function keys
Just below the display there are four function keys, marked with arrows, and with
the actual key functions indicated at the lower line of the display. When there is
no text above a key, that key has no function.
An ENTER key in the lower right corner of the panel is used to open a selected
menu, finish the entry of a value, etc. In many cases it has the same function as
the function key to the right.
Symbol keys
To the right of the display there are four keys, marked with the weighing symbols
for taring, gross/net, printing and zeroing. A brief description of these keys is given
in the table below. Refer to section 5. Operation for a more detailed description of
the symbol key functions.
Key
T
B
Function
TARE
Taring, i.e. entry of the gross weight as auto tare value and
display of net weight zero. Depending on actual setting taring
may be prevented if ‘Motion’ is displayed.
GROSS/NET
Toggling between display of gross weight and net weight.
Net weight can be displayed only if a tare weight has been
entered.
PRINT
Printing of the displayed weight value on a connected printer
(according to parameter settings in TAD 3) and addition of
the weight value to the accumulated weight ‘Printed’.
ZERO
Setting the gross weight value to zero (provided the value
is in the zeroing range: -1 % to +3 % of the capacity) and
setting the auto tare value to zero.
N
0
2-4
Name
Weight Indicator TAD 3
Definition of digit keys
The digit keys, including keys with minus sign and decimal point, are used for entry and
editing of numerical parameter values.
Digit keys 2 through 9 are also marked with letters and can, in some menus, be used
for text entry. Then the digit and the letters of a key will be displayed in sequence as
the key is activated several times.
The digit key 0 (zero) also has a special function, indicated by the letter i:
When TAD 3 displays the weight value and the i key is pressed, the instrument
switches over to display of the instrument Main menu. In sub menus to that
menu parameter values and data can be shown, and in some cases edited.
When TAD 3 displays the instrument Main menu, pressing the i key will open
the menu ‘Edit set-up’. Another way is to position the cursor at sub menu name
‘Edit set-up’ and press function key ENTER, or the ↵ key.
As menu ‘Edit set-up’ is open all normal measuring functions are stopped
and the parameter values can be edited.
The digit keys 1 through 4, - and . may have special functions, stop and start
functions when optional programmes are activated.
Figure 7. Front panel of TAD 3 with LCD-display, four function keys
below the display, four keys with weighing symbols to the right,
twelve keys with digits and letters, and an ENTER key.
2-5
Technical Manual
2-6
Weight Indicator TAD 3
3. Set-up
General
All operating functions in TAD 3 are controlled by parameters. The parameter values
are permanently stored in TAD 3 and will not be lost when the module is switched off.
At delivery the parameters are factory-set to default values, giving the weight indicator
an initial standard function.
The actual setting of the parameter values can be read during normal measuring
operation in sub menus to ‘Show set-up’. The parameter values in these menus
can also be printed out on a connected printer.
Editing can not be performed in menu ‘Show set-up’.
Editing of parameter values can be performed in sub menus to ‘Edit set-up’,
using the display and keys on the front panel of TAD 3, but this will interrupt
the normal measuring operation.
Editing can also be performed by serial communication. During such remote editing
the panel keys are disabled and TAD 3 displays the following message:
Remote set-up
Please wait!
In TAD 3 two security locks are provided to protect from unauthorised editing
of parameters and values. The locks are opened by four-digit codes.
When TAD 3 is first taken into service, setting of a few parameters will quickly adapt
the instrument to the transducers and give desired weighing function.
This ‘Quick set-up’ is described in a separate publication:
Weight indicator TAD 3
Operating instructions, Quick installation
Menu ‘Show set-up’
Menu ‘Show set-up’ with sub menus contain all used set-up parameters, arranged
according to figure 8 on next page.
When menu ‘Show set-up’ is open, TAD 3 is performing normal measuring operations
while actual parameter settings can be shown or printed out.
No parameter values can be edited from menu ‘Show set-up’.
To open ‘Show set-up’, first press digit key i to open the instrument Main menu.
Then press function key DOWN several times to position the curser at ‘Show set-up’.
Press function key ENTER, and menu ‘Show set-up’ will be opened. In this menu the
cursor can be positioned, by UP and DOWN, at any sub menu name.
Press function key ENTER to show the parameters in the chosen sub menu.
Printing of Set-up parameter values
If a printer is connected and PRINT is pressed when menu ‘Show set-up’ is open,
printing of a complete list of all parameter values can be started.
The printout will take several minutes to conclude.
3-1
Technical Manual
Figure 8. The parameters are arranged in a number of menus. For some parameters,
viewing is conditional. Parameter editing can only be performed when the normal
measuring operation is interrupted. Consequently, the selection of ‘Edit set-up’
must be acknowledged, and a valid code for a security lock may be demanded.
3-2
Weight Indicator TAD 3
Complete set-up
At delivery, the TAD 3 parameters are set to default values. In a set-up operation
these values can be edited to appropriate values for the actual installation.
These values will be permanently saved in the instrument memory.
Parameter editing can be performed at TAD 3 in sub menus to ‘Edit set-up’
or by serial communication.
Enter menu ‘Edit set-up’
Warning!
Entering ‘Edit set-up’ will stop all measuring operations!
i , should be used to open the menus.
When TAD 3 is in normal operation, and the key i is pressed, switch over to
The digit key for 0 (zero), also marked
the instrument Main menu will be performed.
If demanded, the Operator code must be entered for entry in the Main menu.
When TAD 3 displays the Main menu, and the key i is pressed again,
switch over to menu ‘Edit set-up’ will be performed.
If demanded, the Set-up code must be entered for entry in ‘Edit set-up’.
Before ‘Edit set-up’ is opened, and the measurement function is interrupted,
a warning will be displayed.
Press function key NO to stay in normal measuring operation.
Press YES to continue, and TAD 3 will switch to menu ‘Edit set-up’.
Sub menus
The set-up parameters in TAD 3 are presented in sub menus, see figure 8 and 9, with
titles indicating the type of parameters in the sub menu.
In menu ‘Edit set-up’, a flashing cursor can be positioned at any sub menu name
by the function keys UP/DOWN. The list of sub menu names will scroll as
the cursor reaches the border of the list.
Press function key ENTER, or the ↵ key, to open the sub menu at the cursor.
Parameters
When a sub menu is opened, the flashing cursor can be positioned at any parameter
name by the function keys UP/DOWN. The list of parameters will
scroll as the cursor reaches the border of the list.
Set-up mode
Edit set-up
Quick set-up
General
Calibration parameters
Calibration
Communication
Level supervision
Inputs
Outputs
Analogue outputs
Flow rate
Option
Batching parameters Option
Special menu
Option
Program options
Legal lock
Diagnostics
EXIT
UP
DOWN
See 'Operating instructions,
Quick installation
See pages 3-7, 3-8
See pages 3-9 to 3-13
See pages 3-13 to 3-19
See pages 3-20 to 3-25
See pages 3-26, 3-27
See page 3-28
See page 3-29
See pages 3-30 to 3-33
See pages 8-2, 8-3
See pages 7-11 to 7-24
See page 3-34
See page 3-34
See pages 10-1 to 10-4
ENTER
Figure 9. Menu ‘Edit set-up’ presents the names of the sub menus
and has a cursor that can be positioned at any name.
3-3
Technical Manual
Editing procedure
Parameter editing can only take place in menu ‘Edit set-up’. Because all normal
measuring functions will be interrupted, a warning will be given before menu ‘Edit
set-up’ is opened. The codes for the ‘Operator lock’ and the ‘Set-up lock’ may also
be demanded.
In menu ‘Edit set-up’ a sub menu can be selected by positioning of the cursor and
pressing the key ENTER.
In the sub menu the cursor should be positioned at the parameter to edit.
When the indicated parameter has been selected, by function key EDIT, the cursor
moves to the parameter value and the function keys will get editing functions.
Selecting a parameter in ‘Edit set-up’:
Press the key marked i (digit key 0).
(The Operator code may be demanded.)
The instrument Main menu
will be shown.
Press i (digit key 0) again to enter
in menu ‘Edit set-up’.
(The Set-up code may be demanded.)
A warning menu will be shown.
Press YES to enter in ‘Edit set-up’.
Normal measuring will be interrupted
and editing will be possible.
Position the cursor, by UP/DOWN,
at a sub menu name.
Press ENTER (or ↵ ) to open
the indicated sub menu.
A list of the parameters in
the sub menu will be shown.
Position the cursor, by UP/DOWN,
at a parameter name.
Press EDIT (or ↵ ) to start editing
of the indicated parameter.
The cursor moves from the parameter
name to the parameter value.
(If the parameter value is ”numerical”
an underscore line will replace the value.)
3-4
i
i
0
'Operators code'
may be needed!
0
'Set-up code'
may be needed!
YES
DOWN
ENTER
DOWN
EDIT
DOWN
Main menu
Instrument name
Preset tare
Edit levels
BACK
UP
DOWN
ENTER
WARNING!
The measurement function
will be interrupted.
Are you sure to continue?
YES
NO
Edit set-up
Quick set-up
General
Calibration set-up
EXIT
UP
DOWN
ENTER
Edit set-up
Quick set-up
General
Calibration set-up
EXIT
DOWN
UP
ENTER
General
Language
Start mode
Display info
UP
EXIT
English
Auto
Date/time
DOWN ENTER
General
Language
Start mode
Display info
UP
EXIT
English
Auto
Date/time
DOWN ENTER
General
Language
Start mode
Display info
PREV. CANCEL
English
Auto
Date/time
NEXT
Weight Indicator TAD 3
Editing of selected parameter values:
Parameter values in TAD 3 can be of ”choice” type: a pre-set value or function,
selected from a list of alternatives.
Or the values can be ”numerical”: a new parameter value should be entered
by the digit keys.
• For ”choice” parameters, function keys PREV./NEXT can be used to step through
the list of value alternatives.
The displayed alternative is entered and made active as key ↵ is pressed.
• For ”numerical” parameters, a parameter value can be entered by the digit keys.
The last digit can be removed by function key <– .
The displayed numerical value is entered and made active as key ↵ is pressed.
When the editing of one parameter value is terminated by the ↵ key, the cursor will
move to the parameter name. If another parameter in the same sub menu should be
edited, function keys UP/DOWN can be used to position the cursor.
See previous page.
Press function key BACK to switch over to menu ‘Edit set-up’.
In that menu keys UP/DOWN can be used to position the cursor at another
sub menu name. Pressing function key ENTER will open that menu.
See previous page.
Leaving menu ‘Edit set-up’:
In sub menus to ‘Edit set-up’ function key BACK can always be pressed to switch TAD 3
back to menu ‘Edit set-up’.
To leave menu ‘Edit set-up’, function key EXIT should be pressed.
If no parameters have been edited, TAD 3 will switch over to normal operation,
displaying the weight value.
If any parameter value has been edited, the menu ‘Exit set-up Save changes?’
will be displayed.
EXIT
Exit set-up
Save changes?
CANCEL
Save:
Don’t save:
Don’t exit:
YES
NO
Press function key YES.
All edited parameter values will be saved permanently.
TAD 3 will switch over to normal weight display.
Press function key NO.
The edited values will not be saved, the parameters resume
the values that were valid before the editing started.
TAD 3 will switch over to normal weight display.
Press function key CANCEL.
Menu ‘Edit set-up’ will stay open and editing can be continued.
The edited parameter values will stay active but the values
are not permanently saved.
3-5
Technical Manual
Sub menus to ‘Edit set-up’
Quick set-up
A separate publication, ‘TAD 3 Operating instructions, Quick installation’ describes
this menu and how editing is performed. The parameters in ‘Quick set-up’ are
included in sub menus General, Calibration parameters, and Calibration.
General
This menu contains parameters used to define the properties of the display window
and the keys at the TAD 3 panel.
Calibration parameters
This menu contains parameters defining the measuring properties for the scale
installation with TAD 3.
Calibration
This menu contains parameters for calibration of the scale.
Data sheet: Values from transducer data sheets are used to perform fast calibration
with good accuracy.
Deadweight: The scale is loaded with known weights in up to six calibration points,
and the instrument is set to display corresponding weight values.
Table: Recorded values from an earlier deadweight calibration of the scale are
transferred to a replacement TAD 3 unit.
Shunt: Connecting a shunt resistor to the transducer gives a signal change,
corresponding to a certain load on the transducer, defined in the data sheet.
Communication
This menu contains parameters for two internal and two external serial communication
ports, and for the remote display and printer that can be connected.
Level supervision
This menu contains parameters for the level supervision and setpoint functions
in the instrument.
Inputs
This menu contains parameters for the function of internal and external digital inputs
to TAD 3.
Outputs
This menu contains parameters for the function of internal and external digital outputs
from TAD 3.
Analogue outputs
This menu contains parameters for the function of optional analogue output units that
can be connected to TAD 3.
Batching parameters
This menu contains parameters for the optional batching function that can be
activated.
Special menu
This menu contains parameters for special programs.
Program options
This menu is used for activation of program options in TAD 3.
Diagnostics
This menu can be used by troubleshooting to check input and output functions
of TAD 3 and external units.
3-6
Weight Indicator TAD 3
Parameters
On the following pages a survey of all parameters is presented. The parameters are
divided in groups following the menu they belong to.
The first line indicates the parameter name and the Modbus address, used for
set-up by serial communication. The parameters are saved in two different float value
formats, and consequently also in two different memory registers.
For choice parameters an index in [ ] is given for each alternative.
(These indices are used for set-up by serial communication.)
For numerical parameters, a value range is given.
At the end of the table, the default value is given in < >.
To the right there is a short parameter explanation and, in italic, the results for
the different alternatives.
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
Menu ‘General’
Language
Svenska
[0]
English
[1]
Deutsch
[2]
Français
[3]
Suomi
[4]
Espanol
[5]
Nederlands
[6]
<English>
Modbus: 41000 (46000)
Defines the language
to be used in menus
and messages.
General
Start mode
Modbus: 41002 (46002)
BACK
[0]
[1]
Command
Auto
<Auto>
Display info
Off
[0]
Level status
[1]
Preset tare
[2]
Date/Time
[3]
I/O status
[4]
<Date/Time>
Language
Start mode
Display info
Display contrast
Backlight
Date format
Gross/Net key
Tare key
Print key
Zero key
Operator lock
Operator code
Set-up lock
Set-up code
UP
DOWN
EDIT
Defines the start mode after power-on or reset.
Command: A ‘start operation’ command from
control computer or panel key is required for start up.
Auto: Automatic start up.
Modbus: 41004 (46004)
Defines the additional information displayed
by Operating mode.
Off: Normally no additional information, but if option
‘Flow rate’ is activated, a line with the actual weight
value (alt. flow rate) is displayed.
Level status: A line of boxes for Level indication.
Preset tare: A line with the actual
‘Preset Tare’ (PT) value.
Date/Time: A line with date and time.
I/O status: A line of boxes with indication for
internal digital inputs and relay outputs.
3-7
Technical Manual
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
Display contrast
0
[0]
1
[1]
2
[2]
3
[3]
4
[4]
5
[5]
6
[6]
7
[7]
<4>
Modbus: 41006 (46006)
Defines the text contrast for the display window.
Low values giving paler characters but better readability
at slanted display.
High values giving sharper characters but reduced
readability at slanted display.
Backlight
0
[0]
1
[1]
2
[2]
3
[3]
4
[4]
5
[5]
6
[6]
7
[7]
8
[8]
9
[9]
<5>
Modbus: 41008 (46008)
Defines the backlight intensity for the display.
0 - 9: Low to high light intensity.
Date format
Modbus: 41010 (46010)
[0]
[1]
[2]
YYYY-MM-DD
YYYY-DD-MM
DD-MM-YYYY
<YYYY-MM-DD>
Gross/Net key
[0]
[1]
Off
On
<On>
Tare key
[0]
[1]
Off
On
<On>
Off
On
<On>
Zero key
[0]
[1]
3-8
Modbus: 41012 (46012)
Disables/enables front panel key Gross/Net.
Modbus: 41014 (46014)
Print key
[0]
[1]
Defines the date format on printouts.
YYYY: = year. MM: = month. DD: = day.
Disables/enables front panel key Tare.
Modbus: 41016 (46016)
Disables/enables front panel key Print.
Modbus: 41018 (46018)
Off
On
<On>
Disables/enables front panel key Zero.
Weight Indicator TAD 3
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
Operator lock
Modbus: 41020 (46020)
[0]
[1]
Off
On
<Off>
Operator code
Range:
1 - 9999
<1937>
Set-up lock
[0]
[1]
Off
On
<Off>
Set-up code
Range:
1 - 9999
<1937>
Off: Operator lock is not activated.
On: Operator lock is activated, preventing unauthorised
display and editing of settings in TAD 3.
Modbus: 41022 (46022)
Defines the valid code for Operator lock.
Only shown if Operator lock is ‘On’.
If ‘Set-up lock’ (see below) is ‘On’ this code
will not give access to ‘Edit set-up’.
Modbus: 41024 (46024)
Off: Set-up lock is not activated.
On: Set-up lock is activated, preventing parameter
editing in Edit set-up.
Modbus: 41026 (46026)
Defines the valid code for Set-up lock.
Only shown if Set-up lock is ‘On’.
If ‘Operator lock’ (see above) is ‘On’ this code will still
give access to all menus in the Main menu.
Menu ‘Calibration parameters’
Measurement unit
[0]
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[12]
[13]
[14]
[15]
[16]
[17]
[18]
[19]
[20]
[21]
NONE
g
kg
t
lb
N
kN
oz
psi
kPa
MPa
bar
l
lbf
kgf
PLI
N/m
kN/m
Nm
daN
mV/V
pls
<kg>
Modbus: 41028 (46028)
Defines the engineering
unit that should be
used for the measured
value and for related
set-up parameters.
Calibration parameters
Measurement unit
Resolution
Capacity
Mains frequency
Filter type
Filter time
Filter window
Motion detect w.
No-motion delay
Motion check
Min.weight print
Warm up time
Overload check
Overload limit
Zero-tracking
Zero-track.rate
Excitation
Tare corr.mode
BACK
UP
DOWN
EDIT
3-9
Technical Manual
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
Resolution
Modbus: 41030 (46030)
[0]
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[12]
[13]
[14]
0.001
0.002
0.005
0.01
0.02
0.05
0.1
0.2
0.5
1
2
5
10
20
50
<0.1>
Capacity
Modbus: 41032 (46032)
Range:
0.5 to 999999
Unit:
Measurem. unit
<500>
Mains frequency
[0]
[1]
50 Hz
60 Hz
<50 Hz>
Filter type
[0]
[1]
[2]
[3]
Short
Standard
Long
Special
<Standard>
Filter time
Range:
200 to 20000
for 50 Hz,
167 to 20000
for 60 Hz.
Unit: ms
<800>
3-10
Defines the decimal point position and resolution format
for the displayed value. All set-up parameters using the
measurement unit will be written with the decimal point
position selected in this menu.
If the last digits of the weight value are not stable, a
more coarse resolution can be selected to get a stable
reading.
Nominal range of scale.
Capacity / Resolution = Number of divisions.
Modbus: 41034 (46034)
Defines a filter for suppression of mains frequency noise.
50 Hz: 50 Hz filter activated.
60 Hz: 60 Hz filter activated.
Modbus: 41036 (46036)
Used to filter transducer signal for optimum stability.
Short: Decreases weighing accuracy. (Fast response
to a transducer signal change.)
Standard: Normal setting.
Long: Improves the suppression of unstable force on
the transducers. (Delays response to a transducer
signal change.)
Special: Filter time set in parameter ‘Filter Time’.
Modbus: 41038 (46038)
When ‘Filter type’ is set to Short, Standard or Long
the filter time is automatically calculated by TAD 3 and
can be read here.
When ‘Filter type’ is set to ‘Special’ the filter time
can be defined here, giving more flexibility.
For more information, see Filter function
in section 5 Operation.
Weight Indicator TAD 3
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
Filter window
Modbus: 41040 (46040)
Range:
0 to 999999
Unit:
Measurem. unit
<10 * Resolution>
Motion detect w.
Range:
0 to 999999
Unit:
Measurem. unit
<1 * Resolution>
No-motion delay
Range:
0 to 10.0
Unit: s
<1.0>
Motion check
[0]
[1]
Off
On
<Off>
Min.weight print
Range:
0 to 999999
Unit:
Measurem. unit
<0>
Warm up time
Range:
0 - 200
Unit: min
<0>
TAD 3 produces unfiltered and filtered weight internally.
If the difference between the two latest filtered weights is
less than ‘Filter window’ the filtered weight is used.
Otherwise the unfiltered weight is used.
This parameter value has one decimal more than
parameter Resolution, to allow ‘Filter window’ to be
smaller than the resolution.
Modbus: 41042 (46042)
Motion status is ‘on’ when the weight value is not stable.
It goes off when the weight has been stable for the
‘No motion delay time’. Motion condition exists if the
change in weight between two conversions is greater
than the window ‘Motion detect w.’. This parameter
value has one decimal more than parameter Resolution,
to allow ‘Motion detect w.’ to be smaller than the
resolution.
Modbus: 41044 (46044)
Delay in seconds from detection of stable weight
until the Motion status goes off.
Modbus: 41046 (46046)
Off: Only zero adjustment is inhibited during motion.
On: Inhibits zero adjustment, taring, and printing during
motion.
Modbus: 41048 (46048)
The smallest weight value that is allowed
to be printed.
0 gives no restrictions.
Modbus: 41050 (46050)
Defines the delay time in minutes from power up until
the weight presentation has full accuracy.
Indicated in the display with the text ‘Warming up!’.
3-11
Technical Manual
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
Overload check
Modbus: 41052 (46052)
[0]
[1]
[2]
Off
Unipolar
Bipolar
<Off>
Overload limit
Range:
0.5 to 999999
Unit:
Measurem. unit
<Capacity +
9 * Resolution>
Zero-tracking
[0]
[1]
[2]
Off
On
On+AutoZero
<Off>
Zero-track.rate
Range:
0 to 1500
Unit: /min
<1>
Excitation
[0]
[1]
[2]
3-12
DC
AC
External
<DC>
Check of overload is performed according to this set-up.
Off: No check is performed. Weight will be reported
up to the limits of the AD converter.
Unipolar: Overload status will be set if ‘Overload limit’ is
exceeded. Underload status will be set if the gross weight
is below minus (-)9 * Resolution.
Bipolar: Overload status will be set if Overload limit
is exceeded.
Underload status will be set if the gross weight is below
minus (-) Overload limit.
Modbus: 41054 (46054)
Should be set to the max gross weight that
the weight indicator is allowed to report.
This parameter is always set to default value when
changing Resolution or Capacity. If ‘Bipolar’ overload
check is selected the weight will be reported up to
the Overload limit and down to
the minus (-) Overload limit.
Modbus: 41056 (46056)
With this parameter automatic zero-tracking can be
selected, or a combination of automatic zero-tracking
and automatic zerosetting.
The functions are described on page 5-6.
Modbus: 41058 (46058)
Maximum weight change speed for zero-tracking
to be performed.
‘Zero-track.rate’ must be less than (30 * Resolution).
Unit for the Zero-track rate is: Measurem. unit/min,
expressed as ‘ /min’ to save space.
Modbus: 41060 (46060)
Selection of excitation for the transducers connected to
the TAD 3.
DC: Transducer excitation is taken from the internal
DC power supply.
AC: NOT INCLUDED (Transducer excitation with
alternating polarity is taken from the internal power
supply. This gives compensation for thermal e.m.f. effects
in transducer connections.)
External: Transducer excitation is assumed to be taken
from an external power supply, so only sense and
transducer signal should be connected to TAD 3.
Weight Indicator TAD 3
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
Tare corr.mode
Modbus: 41062 (46062)
[0]
[1]
[2]
Auto
Preset
Auto+preset
<Auto>
The tare value can be calculated in three different ways:
Net weight = Gross weight – Tare value
Auto: Auto tare value is used.
Preset: Tare value is entered through
the serial communication or keypad.
Auto+preset: Tare value is the sum of
the preset tare value and auto tare value.
Menu ‘Calibration’
Calibration type
[0]
[1]
[2]
[3]
Data sheet
Deadweight
Table
Shunt
<Data sheet>
Modbus: 41064 (46064)
Defines the type of calibration to be performed.
A new calibration is initiated as a ‘Calibration type’
is selected.
Data sheet: Data sheet calibration is easy to use and
doesn’t demand any reference equipment, except data
from the transducer data sheets.
Deadweight: Deadweight calibration is normally
the most accurate calibration type. It requires known
weights to at least 2/3 of the wanted measuring range.
Table: Table calibration is used to enter recorded values
from a previous calibration into a replacement instrument.
Shunt: Shunt calibration with shunt calibration values of
the loadcells.
Data sheet calibration
Conv. factor
Range:
0.01 to 100
<9.80665>
Modbus: 41066 (46066)
Defines the relationship
between a measured
value expressed in
data sheet unit and
expressed in the selected
measurement unit.
Calibration
Calibr. type/Data sheet
Conv. factor
Number of transd
Rated load
Rated output 1
Rated output 2
Rated output 3
Rated output 4
Shunt transd.sig
Set zero
Zero offset
BACK
Number of transd
Range:
1 to 4
<3>
UP
DOWN
EDIT
Modbus: 41068 (46068)
Defines the number of transducers and fixed support
points in the scale installation. All transducers must have
equal rated load.
If the total number is over 4: enter 1 here!
3-13
Technical Manual
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
Rated load
Modbus: 41070 (46070)
Range:
1 to 999999
Unit:
Data sheet unit
<2000.0>
Rated output 1
Range:
0 to 9.99999
Unit: mV/V
<2.03900>
Rated output 2
Range:
0 to 9.99999
Unit: mV/V
<2.03900>
Rated output 3
Range:
0 to 9.99999
Unit: mV/V
<2.03900>
Rated output 4
Range:
0 to 9.99999
Unit: mV/V
<2.03900>
Shunt transd.sig
Range: +/–9.99999
Unit: mV/V
<2.03900>
Defines the rated load for one transducer, expressed
in the data sheet unit. The value is specified in
the transducer data sheet.
NOTE! If the data sheet value is 5 kN, the parameter
should be set to 5000 (N).
If the total number of transducers and fixed supports
is over 4: multiply that number with the rated load for
one transducer and enter the result here!
Modbus: 41072 (46072)
Defines the rated output signal for transducer 1.
The value is specified in the transducer data sheet
for transducer 1.
If the total number of transducers and fixed supports is
over 4: add up all rated output values, divide by
the number of transducers, and enter the result here!
Modbus: 41074 (46074)
Defines the rated output signal for transducer 2.
The value is specified in the transducer data sheet
for transducer 2.
Modbus: 41076 (46076)
Defines the rated output signal for transducer 3.
The value is specified in the transducer data sheet
for transducer 3.
Modbus: 41078 (46078)
Defines the rated output signal for transducer 4.
The value is specified in the transducer data sheet
for transducer 4.
Modbus: 41108 (46108)
The transducer signal offset when the shunt resistor
is connected can be entered or automatically read
with a command.
Set zero
Modbus: 41110 (46110)
Zero offset
Modbus: 41112 (46112)
See under ‘Deadweight calibration’.
3-14
and
Weight Indicator TAD 3
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
Deadweight calibration
Number of cal. p.
Modbus: 41080 (46080)
Number of
calibration points.
Range:
2 to 6
<2>
Value cal. p.1
Modbus: 41082 (46082)
Range: +/–999999
Unit:
Measurem. unit
<0>
Value cal. p.2
Modbus: 41084 (46084)
Range: +/–999999
Unit:
Measurem. unit
<500>
Value cal. p.3
This parameter defines
the load on the scale in
the second calibration
point.
Calibr. type/Deadweight
Number of cal.p.
Value cal. p.1
Value cal. p.2
Value cal. p.3
Value cal. p.4
Value cal. p.5
Value cal. p.6
Transd.sign. p.1
Transd.sign. p.2
Transd.sign. p.3
Transd.sign. p.4
Transd.sign. p.5
Transd.sign. p.6
Shunt transd.sig
Set zero
Zero offset
BACK
UP
DOWN
EDIT
Modbus: 41086 (46086)
Range: +/–999999
Unit:
Measurem. unit
<0>
Value cal. p.4
This parameter defines
the load on the scale in
the lowest calibration
point, normally 0.
Calibration
This parameter defines the load on the scale in
the third calibration point.
Modbus: 41088 (46088)
Range: +/–999999
Unit:
Measurem. unit
<0>
Value cal. p.5
Range: +/–999999
Unit:
Measurem. unit
<0>
Value cal. p.6
Range: +/–999999
Unit:
Measurem. unit
<0>
Transd.sign. p.1
Range: +/–9.99999
Unit: mV/V
<0.00000>
This parameter defines the load on the scale in
the fourth calibration point.
Modbus: 41090 (46090)
This parameter defines the load on the scale in
the fifth calibration point.
Modbus: 41092 (46092)
This parameter defines the load on the scale in
the sixth calibration point.
Modbus: 41094 (46094)
In this parameter, the transducer signal in
the lowest calibration point is displayed,
but the value can not be edited.
3-15
Technical Manual
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
Transd.sign. p.2
Modbus: 41096 (46096)
Range: +/–9.99999
Unit: mV/V
<1.66631>
Transd.sign. p.3
Range: +/–9.99999
Unit: mV/V
<2.03900>
Transd.sign. p.4
Range: +/–9.99999
Unit: mV/V
<2.03900>
Transd.sign. p.5
Range: +/–9.99999
Unit: mV/V
<2.03900>
Transd.sign. p.6
Range: +/–9.99999
Unit: mV/V
<2.03900>
Shunt transd.sig
Range: +/–9.99999
Unit: mV/V
<2.03900>
Set zero
Modbus: 41098 (46098)
In this parameter, the transducer signal
in the third calibration point is displayed,
but the value can not be edited.
Modbus: 41100 (46100)
In this parameter, the transducer signal
in the fourth calibration point is displayed,
but the value can not be edited.
Modbus: 41102 (46102)
In this parameter, the transducer signal
in the fifth calibration point is displayed,
but the value can not be edited.
Modbus: 41104 (46104)
In this parameter, the transducer signal
in the sixth calibration point is displayed,
but the value can not be edited.
Modbus: 41108 (46108)
The transducer signal offset when the shunt resistor
is connected can be entered or automatically read
from the module
with a command.
Modbus: 41110 (46110)
Range: +/–999999
Unit:
Measurem. unit
<‘Live’>
Zero offset
Range: +/–999999
Unit:
Measurem. unit
<0>
3-16
In this parameter, the transducer signal
in the second calibration point is displayed,
but the value can not be edited.
The actual weight value is displayed.
Enter wanted value for the actual load, usually ‘0’,
i.e. unloaded scale.
NOTE! This parameter should be used for
zeroing of the instrument.
Modbus: 41112 (46112)
This menu shows the offset value acquired by zeroing
in ‘Set zero’. If this parameter is edited,
the zeroing will be influenced.
Weight Indicator TAD 3
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
Table calibration
The scale is calibrated with recorded values from a previous calibration, normally a
deadweight calibration.
Number of cal. p
Modbus: 41080 (46080)
Number of
calibration points.
Range:
2 to 6
<2>
Value cal. p.1
Modbus: 41082 (46082)
Range: +/–999999
Unit:
Measurem. unit
<0>
Value cal. p.2
In this parameter, enter the
recorded value for
the load on the scale in the
first calibration point.
Modbus: 41084 (46084)
Range: +/–999999
Unit:
Measurem. unit
<500>
Value cal. p.3
In this parameter, enter the
recorded value for
the load on the scale in the
second calibration point.
Modbus: 41086 (46086)
Range: +/–999999
Unit:
Measurem. unit
<0>
Value cal. p.4
Range: +/–999999
Unit:
Measurem. unit
<0>
Value cal. p.5
Range: +/–999999
Unit:
Measurem. unit
<0>
Value cal. p.6
Range: +/–999999
Unit:
Measurem. unit
<0>
Calibration
Calibr. type/Table
Number of cal.p.
Value cal. p.1
Value cal. p.2
Value cal. p.3
Value cal. p.4
Value cal. p.5
Value cal. p.6
Transd.sign. p.1
Transd.sign. p.2
Transd.sign. p.3
Transd.sign. p.4
Transd.sign. p.5
Transd.sign. p.6
Shunt transd.sig
Set zero
Zero offset
BACK
UP
DOWN
In this parameter, enter the recorded value for
the load on the scale in the third calibration point.
Modbus: 41088 (46088)
In this parameter, enter the recorded value for
the load on the scale in the fourth calibration point.
Modbus: 41090 (46090)
In this parameter, enter the recorded value for
the load on the scale in the fifth calibration point.
Modbus: 41092 (46092)
In this parameter, enter the recorded value for
the load on the scale in the sixth calibration point.
3-17
EDIT
Technical Manual
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
Transd.sign. p.1
Modbus: 41094 (46094)
Range: +/–9.99999
Unit: mV/V
<0.00000>
Transd.sign. p.2
Range: +/–9.99999
Unit: mV/V
<1.66631>
Transd.sign. p.3
Range: +/–9.99999
Unit: mV/V
<2.03900>
Transd.sign. p.4
Range: +/–9.99999
Unit: mV/V
<2.03900>
Transd.sign. p.5
Range: +/–9.99999
Unit: mV/V
<2.03900>
Transd.sign. p.6
Range: +/–9.99999
Unit: mV/V
<2.03900>
Shunt transd.sig
Range: +/–9.99999
Unit: mV/V
<2.03900>
Set zero
Modbus: 41096 (46096)
In this parameter, enter the recorded value of
the transducer signal in the second calibration point.
Modbus: 41098 (46098)
In this parameter, enter the recorded value of
the transducer signal in the third calibration point.
Modbus: 41100 (46100)
In this parameter, enter the recorded value of
the transducer signal in the fourth calibration point.
Modbus: 41102 (46102)
In this parameter, enter the recorded value of
the transducer signal in the fifth calibration point.
Modbus: 41104 (46104)
In this parameter, enter the recorded value of
the transducer signal in the sixth calibration point.
Modbus: 41108 (46108)
The transducer signal offset when the shunt resistor is
connected can be entered or automatically read from
the module with a command.
Modbus: 41110 (46110)
Range: +/–999999
Unit:
Measurem. unit
<‘Live’>
Zero offset
Range: +/–999999
Unit:
Measurem. unit
<0>
3-18
In this parameter, enter the recorded value of
the transducer signal in the first calibration point.
The actual weight value is displayed. If the scale is
installed, a value for the actual load should be entered,
usually ‘0’ for an unloaded scale.
NOTE! This parameter should be used for
zeroing of the instrument.
Modbus: 41112 (46112)
In this parameter, a recorded zero offset value can
be entered.
If zeroing has been performed with ‘Set zero’ above,
the value of this parameter should not be changed.
Weight Indicator TAD 3
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
Shunt calibration
Conv. factor
Range:
0.01 to 100
<9.80665>
Shunt cal. force
Range: +/–999999
Unit:
Transducer
data sheet unit.
<2138.0>
Shunt transd.sig
Range: +/–9.99999
Unit: mV/V
<2.03900>
Modbus: 41066 (46066)
Calibration
Defines the relationship
between a measured value
expressed in
data sheet unit and
expressed in the selected
measurement unit.
Calibr. type/Shunt
Conv. factor
Shunt cal. force
Shunt transd.sig
Set zero
Zero offset
BACK
UP
DOWN
Modbus: 41106 (46106)
The force on the transducers giving the same
signal offset as when the shunt calibration resistor is
connected to the transducers.
Modbus: 41108 (46108)
The transducer signal offset when the shunt resistor is
connected can be entered or automatically read
with a command.
Set zero
Modbus: 41110 (46110)
Zero offset
Modbus: 41112 (46112)
See under ‘Deadweight calibration’.
and
3-19
EDIT
Technical Manual
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
Menu ‘Communication’
Instrum. address
Range: 1 to 247
<1>
COM1:Mode
[0]
[1]
[2]
[3]
[4]
[5]
Not in use
Modbus
Modbus auto
Ext. display
Printer
Printer 850
<Modbus auto>
COM1:Baudrate
[0]
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
300
600
1200
2400
4800
9600
19200
38400
57600
115200
<9600>
COM1:Data format
[0]
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
3-20
7-none-2
7-even-1
7-even-2
7-odd-1
7-odd-2
8-none-1
8-none-2
8-even-1
8-odd-1
< 8-none-1 >
Modbus: 41114 (46114)
Defines the instrument
address for the TAD 3-unit.
Modbus: 41116 (46116)
Defines use of serial port Com 1.
Not in use: The port is not used.
Modbus: The port is used for
control unit communication.
Modbus auto: The control unit
baudrate (from 9600) and bit
configuration (8-none-1,
8-even-1 or 8-odd-1) is
autodetected and used by TAD 3.
Ext. display: The port is used for
transmission of the measurement
value to an external display unit.
Printer: The port is used for a
printer with 7 bit character set.
Printer 850: The port is used for a
printer with 8 bit character set and
850 Multilingual translation.
Communication
Instrum.address
COM1:Mode
COM1:Baudrate
COM1:Data format
COM2:Mode
COM2:Baudrate
COM2:Data format
COM3:Mode
COM3:Baudrate
COM3:Data format
COM3:Position
COM4:Mode
COM4:Baudrate
COM4:Data format
COM4:Position
Ext. disp.mode
Ext. disp.format
Printer pos.1
Printer pos.2
Printer pos.3
Printer pos.4
Priter linefeed
BACK
UP
Modbus: 41118 (46118)
Defines the baudrate for the serial communication.
The parameter must be set to the baudrate of
the external equipment.
This parameter is not shown if ‘Not in use’ or
‘Modbus auto’ is selected in ‘COM1:Mode’.
Modbus: 41120 (46120)
Defines the bit configuration for the serial
communication.
The parameter must be set to the same configuration as
for the external equipment.
This parameter is not shown if ‘Not in use’ or
‘Modbus auto’ is selected in ‘COM1:Mode’.
DOWN
EDIT
Weight Indicator TAD 3
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
COM2:Mode
Modbus: 41122 (46122)
[0]
[1]
[2]
[3]
[4]
[5]
[6]
[7]
Not in use
Modbus
Modbus auto
Ext. display
Printer
Printer 850
I/O bus
<I/O bus>
COM2:Baudrate
[0]
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
300
600
1200
2400
4800
9600
19200
38400
57600
115200
230400
460800
<115200>
COM2:Data format
[0]
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
7-none-2
7-even-1
7-even-2
7-odd-1
7-odd-2
8-none-1
8-none-2
8-even-1
8-odd-1
< 8-none-1 >
Defines the use for serial port Com 2.
Not in use: The serial port is not used.
Modbus: The serial port is used for communication with
a control unit.
Modbus auto: The control unit baudrate (from 9600)
and bit configuration (8-none-1, 8-even-1 or 8-odd-1)
is autodetected and used by TAD 3.
Ext. display: The serial port is used for transmission of
the measurement value to an external display unit.
Printer: The serial port is used for a printer with
7 bit character set.
Printer 850: The serial port is used for a printer with
8 bit character set and 850 Multilingual translation.
I/O bus: The serial port is used for
the Nobel Weighing Systems I/O bus.
Modbus: 41124 (46124)
Defines the baudrate for the serial communication.
The parameter must be set to the baudrate of
the external equipment.
If ‘COM2:Mode’ is set to ‘I/O bus’ and only DIO 3 units
are used, we recommend baudrates from 115200 to
460800. If ANA 3 is included the baudrate may be max.
115200.
This parameter is not shown if ‘COM2:Mode’ is set
to ‘Not in use’ or ‘Modbus auto’.
Modbus: 41126 (46126)
Defines the bit configuration for the serial
communication.
The parameter must be set to the same configuration
as for the external equipment.
This parameter is not shown if ‘COM2:Mode’ is set
to ‘Not in use’, ‘Modbus auto’ or ‘I/O bus’.
3-21
Technical Manual
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
Note: Parameters for ‘COM3:’ are shown only if ‘COM2:Mode’ is set to ‘I/O bus’!
COM3:Mode
[0]
[1]
[2]
[3]
[4]
[5]
Not in use
Modbus
Modbus auto
Ext. display
Printer
Printer 850
< Not in use >
COM3:Baudrate
[0]
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
300
600
1200
2400
4800
9600
19200
38400
57600
115200
< 9600 >
COM3:Data format
[0]
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
7-none-2
7-even-1
7-even-2
7-odd-1
7-odd-2
8-none-1
8-none-2
8-even-1
8-odd-1
< 8-none-1 >
COM3:Position
[0]
[1]
[2]
[3]
3-22
Analog.out.1
Analog.out.2
Dig.I/O 1
Dig.I/O 2
< Dig.I/O 1 >
Modbus: 41128 (46128)
Defines the use of serial port Com 3.
Not in use: The serial port is not used.
Modbus: The serial port is used for communication
with a control unit.
Modbus auto: The control unit baudrate (from 9600) and
bit configuration (8-none-1, 8-even-1 or 8-odd-1) is
autodetected and used by TAD 3.
Ext. display: The serial port is used for transmission of
measurement values to an external display unit.
Printer: The serial port is used for a printer with
7 bit character set.
Printer 850: The serial port is used for a printer with
8 bit character set and 850 Multilingual translation.
Modbus: 41130 (46130)
Defines the baudrate for the serial communication.
The parameter must be set to the baudrate of
the external equipment.
This parameter is not shown if ‘Not in use’ or
‘Modbus auto’ is selected in ‘COM3:Mode’.
Modbus: 41132 (46132)
Defines the bit configuration for the serial
communication.
This parameter must be set to the same configuration as
for the external equipment.
This parameter is not shown if ‘Not in use’ or
‘Modbus auto’ is selected in ‘COM3:Mode’.
Modbus: 41134 (46134)
Defines in which additional unit serial port Com 3
is placed.
This parameter is not shown if ‘Not in use’
is selected in ‘COM3:Mode’.
Weight Indicator TAD 3
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
Note: Parameters for ‘COM4:’ are shown only if ‘COM2:Mode’ is set to ‘I/O bus’!
COM4:Mode
[0]
[1]
[2]
[3]
[4]
[5]
Not in use
Modbus
Modbus auto
Ext. display
Printer
Printer 850
< Not in use >
COM4:Baudrate
[0]
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
300
600
1200
2400
4800
9600
19200
38400
57600
115200
< 9600 >
COM4:Data format
[0]
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
7-none-2
7-even-1
7-even-2
7-odd-1
7-odd-2
8-none-1
8-none-2
8-even-1
8-odd-1
< 8-none-1 >
COM4:Position
[0]
[1]
[2]
[3]
Analog.out.1
Analog.out.2
Dig.I/O 1
Dig.I/O 2
< Dig.I/O 2 >
Modbus: 41136 (46136)
Defines the use of serial port Com 4.
Not in use: The serial port is not used.
Modbus: The serial port is used for communication
with a control unit.
Modbus auto: The control unit baudrate (from 9600) and
bit configuration (8-none-1, 8-even-1 or 8-odd-1)
is autodetected and used by TAD 3.
Ext. display: The serial port is used for transmission
of measurement values to an external display unit.
Printer: The serial port is used for a printer with
7 bit character set.
Printer 850: The serial port is used for a printer with
8 bit character set and 850 Multilingual translation.
Modbus: 41138 (46138)
Defines the baudrate for the serial communication.
The parameter must be set to the baudrate of
the external equipment.
This parameter is not shown if ‘Not in use’ or
‘Modbus auto’ is selected in ‘COM4:Mode’.
Modbus: 41140 (46140)
Defines the bit configuration for the serial
communication.
This parameter must be set to the same configuration as
for the external equipment.
This parameter is not shown if ‘Not in use’ or
‘Modbus auto’ is selected in ‘COM4:Mode’.
Modbus: 41142 (46142)
Defines in which additional unit serial port Com 4
is placed.
This parameter is not shown if ‘Not in use’
is selected in ‘COM4:Mode’.
3-23
Technical Manual
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
Ext. disp.mode
Gross weight
[0]
Net weight
[1]
Disp. weight
[2]
Flow rate
[3]
< Gross weight >
Modbus: 41144 (46144)
Defines the value to send to the external display unit,
connected to TAD 3.
Gross weight: The gross weight value is always sent.
Net weight: The net weight value is always sent.
Disp. weight: The gross or net weight value is sent, even
if flow rate is displayed at TAD 3.
Flow rate: The flow rate value is always sent.
The parameter is shown only if any serial port is
set to ‘Ext. display’. See section 6. Communication,
for further information.
Ext. disp.format
4
[0]
5
[1]
6
[2]
7
[3]
32
[4]
<6>
Modbus: 41146 (46146)
Defines the number of digits on the external display unit,
connected to TAD 3.
Only shown if any serial port is set to ‘Ext. display’
See section 6. Communication, for further information.
Printer pos.1
Not in use
[0]
Disp. weight
[1]
Date/Time
[2]
Instr.name
[3]
Preset tare
[4]
< Disp weight >
Modbus: 41148 (46148)
Defines the type of information to print in position 1
at the printer.
Not in use: Position 1 not used.
(If both ‘Printer pos.1’ and ‘Printer pos.2’ are set to
‘Not in use’ the printer line is removed.)
Disp. weight: Displayed weight/flow rate including the
text Gross/Net/Flow and unit.
Date/Time: Date and time for the printout.
Instr.name: Name of the instrument.
Preset tare: Value of the Preset tare.
The parameter is shown only if ‘Mode’ for any
serial port is set to ‘Printer’ or ‘Printer 850’.
Printer pos.2
Not in use
[0]
Disp. weight
[1]
Date/Time
[2]
Instr.name
[3]
Preset tare
[4]
< Not in use >
Modbus: 41150 (46150)
Defines the type of information to print in position 2
at the printer.
Not in use: Position 2 not used.
(If both ‘Printer pos.1’ and ‘Printer pos.2’ are set to
‘Not in use’ the printer line is removed.)
Disp. weight: Displayed weight/flow rate including the
text Gross/Net/Flow and unit.
Date/Time: Date and time for the printout.
Instr.name: Name of the instrument.
Preset tare: Value of the Preset tare.
The parameter is shown only if ‘Mode’ for any
serial port is set to ‘Printer’ or ‘Printer 850’.
3-24
Weight Indicator TAD 3
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
Printer pos.3
Not in use
[0]
Disp. weight
[1]
Date/Time
[2]
Instr.name
[3]
Preset tare
[4]
< Not in use >
Modbus: 41152 (46152)
Defines the type of information to print in position 3
at the printer.
Not in use: Position 3 not used.
(If both ‘Printer pos.3’ and ‘Printer pos.4’ are set to
‘Not in use’ the printer line is removed.)
Disp. weight: Displayed weight/flow rate including
the text Gross/Net/Flow and unit.
Date/Time: Date and time for the printout.
Instr.name: Name of the instrument.
Preset tare: Value of the Preset tare.
The parameter is shown only if ‘Mode’ for any
serial port is set to ‘Printer’ or ‘Printer 850’.
Printer pos.4
Not in use
[0]
Disp. weight
[1]
Date/Time
[2]
Instr.name
[3]
Preset tare
[4]
< Not in use >
Modbus: 41154 (46154)
Defines the type of information to print in position 4
at the printer.
Not in use: Position 4 not used.
(If both ‘Printer pos.3’ and ‘Printer pos.4’ are set to
‘Not in use’ the printer line is removed.)
Disp. weight: Displayed weight/flow rate including
the text Gross/Net/Flow and unit.
Date/Time: Date and time for the printout.
Instr.name: Name of the instrument.
Preset tare: Value of the Preset tare.
The parameter is shown only if ‘Mode’ for any
serial port is set to ‘Printer’ or ‘Printer 850’.
Printer linefeed
0
[0]
1
[1]
2
[2]
3
[3]
4
[4]
5
[5]
6
[6]
7
[7]
8
[8]
9
[9]
10
[10]
<0>
Modbus: 41156 (46156)
Defines the number of linefeeds after each printout.
Each linefeed consist of CR LF.
The parameter is shown only if ‘Mode’ for any
serial port is set to ‘Printer’.
3-25
Technical Manual
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
Menu ‘Level supervision’
Level 1 source
Level 2 source
Level 3 source
Level 4 source
Level 5 source
Level 6 source
Level 7 source
Level 8 source
Not in use
[0]
Net weight
[1]
Gross weight
[2]
Disp. weight
[3]
Flow rate
[4]
Abs. net w.
[5]
Abs. gross w.
[6]
Abs. disp.w.
[7]
Abs. flow r.
[8]
[9]
Offset lev.1
[10]
<Not in use>
3-26
Modbus: 41158 (46158)
Modbus: 41164 (46164)
Modbus: 41170 (46170)
Modbus: 41176 (46176)
Modbus: 41182 (46182)
Modbus: 41188 (46188)
Modbus: 41194 (46194)
Modbus: 41200 (46200)
Defines the signal to be
supervised by the Level.
Net weight: The Level
operates on the net weight.
Gross weight: The Level
operates on the gross weight
Disp. weight: The Level
operates on gross weight or
net weight, even if the flow rate is
displayed at TAD 3.
Flow rate: The Level
operates on the flow rate,
so for function the flow option
must be activated.
Abs.: Stands for Absolute,
the Level operates on the
absolute value of net weight,
gross weight, displayed weight,
or flow rate.
Offset lev.1: Not available for
‘Level 1 source’.
Example:
If this alternative is selected
for ‘Level 2 source’, Level 2
will operate on the same
signal as Level 1, but for
a different level.
The level difference is set
by Level 2
Level supervision
Level
Level
Level
Level
Level
Level
1
1
1
2
2
2
source
outp.
hyst.
source
outp.
hyst.
etc.
Level 8 source
Setp.1 source
Setp.2 source
BACK
UP
DOWN
EDIT
Weight Indicator TAD 3
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
Level 1 outp.
Level 2 outp.
Level 3 outp.
Level 4 outp.
Level 5 outp.
Level 6 outp.
Level 7 outp.
Level 8 outp.
Active above
[0]
Active below
[1]
< Active above >
Modbus: 41160 (46160)
Modbus: 41166 (46166)
Modbus: 41172 (46172)
Modbus: 41178 (46178)
Modbus: 41184 (46184)
Modbus: 41190 (46190)
Modbus: 41196 (46196)
Modbus: 41202 (46202)
This parameter defines the conditions for control of a
possible used output.
Active above: The used output is activated as
the supervised signal level is above the set Level.
Active below: The used output is activated as
the supervised signal level is below the set Level.
Note: This parameter is not shown if corresponding
‘Level (X) source’ is set to ‘Not in use’.
Relay outputs can be defined for the Levels,
see menu ‘Outputs’ on page 3-29.
Level 1 hyst.
Level 2 hyst.
Level 3 hyst.
Level 4 hyst.
Level 5 hyst.
Level 6 hyst.
Level 7 hyst.
Level 8 hyst.
Range:
+/-999999
Unit:
Measurem. unit
or flow unit.
< 0.2 >
Modbus: 41162 (46162)
Modbus: 41168 (46168)
Modbus: 41174 (46174)
Modbus: 41180 (46180)
Modbus: 41186 (46186)
Modbus: 41192 (46192)
Modbus: 41198 (46198)
Modbus: 41204 (46204)
Defines the hysteresis range for the Level.
Positive value gives a hysteresis range above the switch
level, negative value gives a range below the switch level.
Note: This parameter is not shown if corresponding
‘Level (X) Source’ is set to ‘Not in use’.
Setp.1 source
Setp.2 source
Not in use
[0]
Net weight
[1]
Gross weight
[2]
Disp. weight
[3]
Flow rate
[4]
Abs. net w.
[5]
Abs. gross w.
[6]
Abs. disp.w.
[7]
Abs. flow r.
[8]
<Not in use>
Modbus: 41206 (46206)
Modbus: 41208 (46208)
Defines the signal to be supervised by the setpoint.
Net weight: The Setpoint operates on the net weight.
Gross weight: The Setpoint operates on the gross weight
Disp. weight: The Setpoint operates on gross weight or
net weight, even if the flow rate is displayed at TAD 3.
Flow rate: The Setpoint operates on the flow rate, so for
function the flow option must be activated.
Abs.: Stands for Absolute, the Setpoint operates on
the absolute value of net weight, gross weight, displayed
weight, or flow rate.
3-27
Technical Manual
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
Menu ‘Inputs’
Input 01 use
Input 02 use
Input 11 use
Input 12 use
Input 13 use
Input 14 use
Input 15 use
Input 16 use
Input 17 use
Input 18 use
Input 21 use
Input 22 use
Input 23 use
Input 24 use
Input 25 use
Input 26 use
Input 27 use
Input 28 use
Not in use
[0]
Tare
[1]
Gross/Net
[2]
Gross
[3]
Net
[4]
Print
[5]
Zero
[6]
Flow/Weight
[7]
Flow rate
[8]
Weight
[9]
Start batch.
[10]
Stop batch.
[11]
Reset batch.
[12]
RestartBatch
[13]
Res. b.alarm
[14]
Skip activ.
[15]
B. activity
[16]
[17]
[18]
Finish batch
[19]
< Not in use >
(For Input 01
and Input 02:
< B. activity > )
Modbus: 41210 (46210)
Inputs
Modbus: 41212 (46212)
Input 01 use
Modbus: 41214 (46214)
Input 02 use
Modbus: 41216 (46216)
Input 11 use
Modbus: 41218 (46218)
etc.
Input 18 use
Modbus: 41220 (46220)
Input 21 use
Modbus: 41222 (46222)
etc.
Modbus: 41224 (46224)
Input 28 use
Modbus: 41226 (46226)
BACK
UP
DOWN EDIT
Modbus: 41228 (46228)
Modbus: 41230 (46230)
Modbus: 41232 (46232)
Modbus: 41234 (46234)
Modbus: 41236 (46236)
Modbus: 41238 (46238)
Modbus: 41240 (46240)
Modbus: 41242 (46242)
Modbus: 41244 (46244)
Defines the use of digital inputs to TAD 3. Two digital inputs,
Input 01 and Input 02, are included in the TAD 3 unit.
The remaining inputs demand external I/O units, with 8 inputs
and 8 outputs each, to be connected to TAD 3.
Tare: Input used for taring command.
Gross/Net: Input used for gross/net toggling.
Gross: Input used to switch TAD 3 to gross mode.
Net: Input used to switch TAD 3 to net mode.
Print: Input used for print command.
Zero: Input used for zero command.
*/ Flow/Weight: Input used for flow rate/weight toggling.
*/ Flow rate: Input used to switch TAD 3 to flow rate mode.
*/ Weight: Input used to switch TAD 3 to weight mode.
**/ Start batch.: Input used for start of batching.
**/ Stop batch.: Input used to halt the batching.
**/ Reset batch.: Input used to terminate a halted batching.
**/ RestartBatch: Input used to continue a halted batching.
**/ Res. b.alarm: Input used to reset a batching alarm.
**/ Skip activ.: Input used to skip the rest of a halted batching
activity.
**/ B. activity: Input used in batching activities for
acknowledgement signal or for pulse batching.
**/ Finish batch: Input used to continue batching until
the actual batch is finished.
NOTE:
*/ For function, the flow option must be activated.
**/ For function, the batching option must be activated.
3-28
Weight Indicator TAD 3
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
Menu ‘Outputs’
Output 01 use
Output 02 use
Output 11 use
Output 12 use
Output 13 use
Output 14 use
Output 15 use
Output 16 use
Output 17 use
Output 18 use
Output 21 use
Output 22 use
Output 23 use
Output 24 use
Output 25 use
Output 26 use
Output 27 use
Output 28 use
Not in use
[0]
In process
[1]
Level 1
[2]
Level 2
[3]
Level 3
[4]
Level 4
[5]
Level 5
[6]
Level 6
[7]
Level 7
[8]
Level 8
[9]
Setpoint 1
[10]
Setpoint 2
[11]
Net mode
[12]
Good zero
[13]
StableWeight
[14]
Flow r. disp
[15]
B.inprogress
[16]
B. stopped
[17]
Batch. alarm
[18]
B. activity
[19]
< Not in use >
(For Output 01
and Output 02:
< B. activity > )
Modbus: 41246 (46246)
Modbus: 41248 (46248)
Outputs
Output 01 use
Modbus: 41250 (46250)
Output 02 use
Modbus: 41252 (46252)
Output 11 use
Modbus: 41254 (46254)
etc.
Output 18 use
Modbus: 41256 (46256)
Output 21 use
Modbus: 41258 (46258)
etc.
Modbus: 41260 (46260)
Output 28 use
Modbus: 41262 (46262)
BACK
UP
DOWN
Modbus: 41264 (46264)
Modbus: 41266 (46266)
Modbus: 41268 (46268)
Modbus: 41270 (46270)
Modbus: 41272 (46272)
Modbus: 41274 (46274)
Modbus: 41276 (46276)
Modbus: 41278 (46278)
Modbus: 41280 (46280)
Defines the use for the digital outputs.
Two relay outputs, Output 01 and Output 02,
are included in the TAD 3 unit. The remaining outputs
demand external I/O units, with 8 inputs
and 8 outputs each, to be connected to TAD 3.
EDIT
In process: Active output means active ‘In process’.
Level 1 - 8: Output activated by the Level.
Setpoint 1, 2: Output activated by the Setpoint.
Net mode: Output active in net mode.
Good zero: Output active by ‘good zero’.
StableWeight: Output active by stable weight.
*/ Flow r. disp: Output active by flow rate display.
**/ B.inprogress: Output active as batching is
in progress (also when ‘halted’).
**/ B. stopped: Output active as batching is halted.
**/ Batch. alarm: Output active as a batching alarm
is present and has not been reset.
**/ B. activity: Output used in a batching activity.
NOTE:
*/ For function, the flow option must be activated.
**/ For function, the batching option must be activated.
3-29
Technical Manual
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
Menu ‘Analogue outputs’
1:Output source
Not in use
[0]
Gross weight
[1]
Net weight
[2]
Disp. weight
[3]
Flow rate
[4]
< Not in use >
Modbus: 41282 (46282)
Defines the value
to represent on
Analogue output 1.
Not in use: The analogue
output is not used.
Gross weight: The output
represents gross weight.
Net weight: The output
represents net weight.
Disp. weight: The output
represents gross or net
weight, even if flow rate is
displayed.
Flow rate: The output
represents flow rate (option).
Analogue outputs
1:Output source
1:Output type
1:Range low
1:Range high
1:Low adjust
1:High adjust
1:Filter const.
2:Output source
2:Output type
2:Range low
2:Range high
2:Low adjust
2:High adjust
2:Filter const.
BACK
UP
1:Output type
+/–20mA
[0]
–12 - 20mA
[1]
0-20mA
[2]
4-20mA
[3]
+/–10V
[4]
0-10V
[5]
<4-20mA>
Modbus: 41284 (46284)
Defines the type of signal, used to represent
the weight/flow rate value at Analogue output 1.
+/–20mA, –12 - 20mA: bipolar current output.
0-20mA, 4-20mA: monopolar current output.
+/–10V: bipolar voltage output.
0-10V: monopolar voltage output.
This parameter is not shown if ‘1:Output source’
is set to ‘Not in use’.
1:Range low
Modbus: 41286 (46286)
Range:
+/–999999
Unit:
Measurem. unit
or flow unit
<0>
1:Range high
Range:
+/–999999
Unit:
Measurem. unit
or flow unit
<500>
3-30
Defines the weight/flow rate value that should
give the lowest output (0 V / 0 mA / 4 mA) at
Analogue output 1.
This parameter is not shown if ‘1:Output source’
is set to ‘Not in use’.
Modbus: 41288 (46288)
Defines the weight/flow rate value that should
give the highest output (10 V / 20 mA) at
Analogue output 1.
This parameter is not shown if ‘1:Output source’
is set to ‘Not in use’.
DOWN
EDIT
Weight Indicator TAD 3
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
1:Low adjust
Modbus: 41290 (46290)
Range:
+/–999
<0>
As this parameter is edited, Analogue output 1 will
be activated with the lowest output signal
(0 V / 0 mA / 4 mA). This parameter adds an offset to the
output range and can be adjusted to give expected
reading at lowest output for an instrument connected to
Analogue output 1.
Full adjustment range corresponds to about ±2 % of
maximum analogue output.
The parameter value will be set to zero each time
‘1:Output type’ is changed.
This parameter is not shown if ‘1:Output source’
is set to ‘Not in use’.
1:High adjust
Range:
+/–999
<0>
Modbus: 41292 (46292)
As this parameter is edited, Analogue output 1 will be
activated with the highest output signal (10 V / 20 mA).
This parameter controls the output gain and can be
adjusted to give expected reading at highest output for
an instrument connected to Analogue output 1.
Full adjustment range corresponds to about ±2 % of
maximum analogue output.
The parameter value will be set to zero each time
‘1:Output type’ is changed.
This parameter is not shown if ‘1:Output source’
is set to ‘Not in use’.
1:Filter const.
1
[0]
2
[1]
3
[2]
4
[3]
5
[4]
6
[5]
7
[6]
8
[7]
9
[8]
10
[9]
<1>
Modbus: 41294 (46294)
This parameter is used to get a slower update rate on
Analogue output 1, which gives more stable readings.
2:Output source
Not in use
[0]
Gross weight
[1]
Net weight
[2]
Disp. weight
[3]
Flow rate
[4]
< Not in use >
Modbus: 41296 (46296)
Defines the value to represent on Analogue output 2.
Not in use: The analogue output is not used.
Gross weight: The output represents gross weight.
Net weight: The output represents net weight.
Disp. weight: The output represents gross or net weight,
even if flow rate is displayed.
Flow rate: The output represents flow rate (option).
Example: ‘Filter time’ 200 ms, and this parameter set to
5 gives 1 second update on Analogue output 1.
This parameter is not shown if ‘1:Output source’
is set to ‘Not in use’.
3-31
Technical Manual
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
2:Output type
+/–20mA
[0]
–12 - 20mA
[1]
0-20mA
[2]
4-20mA
[3]
+/–10V
[4]
0-10V
[5]
<4-20mA>
Modbus: 41298 (46298)
Defines the type of signal, used to represent
the weight/flow rate value at Analogue output 2.
+/–20mA, –12 - 20mA: bipolar current output.
0-20mA, 4-20mA: monopolar current output.
+/–10V: bipolar voltage output.
0-10V: monopolar voltage output.
This parameter is not shown if ‘2:Output source’
is set to ‘Not in use’.
2:Range low
Range:
+/–999999
Unit:
Measurem. unit
or flow unit
<0>
Modbus: 41300 (46300)
Defines the weight/flow rate value that should
give the lowest output (0 V / 0 mA / 4 mA) at
Analogue output 2.
2:Range high
Range:
+/–999999
Unit:
Measurem. unit
or flow unit
<500>
Modbus: 41302 (46302)
Defines the weight/flow rate value that should
give the highest output (10 V / 20 mA) at
Analogue output 2.
2:Low adjust
Range:
+/–999
<0>
Modbus: 41304 (46304)
As this parameter is edited, Analogue output 2 will
be activated with the lowest output signal
(0 V / 0 mA / 4 mA). This parameter adds an offset to
the output range and can be adjusted to give expected
reading at lowest output for an instrument connected to
Analogue output 2.
Full adjustment range corresponds to about ±2 % of
maximum analogue output.
The parameter value will be set to zero each time
‘2:Output type’ is changed.
This parameter is not shown if ‘2:Output source’
is set to ‘Not in use’.
This parameter is not shown if ‘2:Output source’
is set to ‘Not in use’.
This parameter is not shown if ‘2:Output source’
is set to ‘Not in use’.
3-32
Weight Indicator TAD 3
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
2:High adjust
Range:
+/–999
<0>
Modbus: 41306 (46306)
As this parameter is edited, Analogue output 2 will be
activated with the highest output signal (10 V / 20 mA).
This parameter controls the output gain and can be
adjusted to give expected reading at highest output for
an instrument connected to Analogue output 2.
Full adjustment range corresponds to about ±2 % of
maximum analogue output.
The parameter value will be set to zero each time
‘2:Output type’ is changed.
This parameter is not shown if ‘2:Output source’
is set to ‘Not in use’.
2:Filter const.
1
[0]
2
[1]
3
[2]
4
[3]
5
[4]
6
[5]
7
[6]
8
[7]
9
[8]
10
[9]
<1>
Modbus: 41308 (46308)
This parameter is used to get a slower update rate on
Analogue output 2, which gives more stable readings.
Example: ‘Filter time’ 200 ms, and this parameter set to
5 gives 1 second update on Analogue output 2.
This parameter is not shown if ‘2:Output source’
is set to ‘Not in use’.
3-33
Technical Manual
Program options
In this sub menu, the name of each available program option is shown on one line. To
activate a program option, a valid code must be entered on the option line.
Individual codes, depending on the serial number of the instrument, can ordered from
Nobel Weighing Systems.
• Position the cursor at the program option you want to activate.
• Press function key EDIT, and the cursor moves to the right.
• Use the digit keys to enter the valid code for the option.
• Finish the code entry by pressing key ↵ .
When a program option has been activated it can be deactivated by entry of 0 (zero),
replacing the valid code for the option.
Temporary program option code
For temporary activation of program options a demo code is available. This code can
be used once, for service (to activate an option in a replacement instrument) or to try
out a program option for a limited time.
The temporary demo code is 1 9 3 7 and it can be entered for any of the available
program options to make it active for 7 days. After this time the activated program
option will be automatically deactivated.
To activate the program option after this ”demo time” a valid code for the actual
instrument must be ordered.
When a program option is running in ”demo mode” this is indicated by the text
*DEMO* in the instrument display. An activated program option in ”demo mode” can
be turned off by using ”0” as program option code.
NOTE!
Don’t forget to order a valid code immediately if you intend to use a program option
for more than 7 days.
Legal lock
In this sub menu the status of the legal lock function is displayed. As the lock is On,
editing of certain parameters is disabled. These parameters are:
- All parameters in menu Calibration parameters.
- All parameters in menu Calibration, except ‘Set zero’ and ‘Zero offset’.
For these parameters however the range is limited to ±10 % of
the scale Capacity from calibrated zero value.
- Parameter ‘Display info’ in menu General.
- Parameters ‘Printer pos.1’ to ‘Printer pos.4’ in menu Communication.
Editing of the program option selection is also disabled.
Setting of the legal lock (On or Off) can be edited only after entry of a certain code.
Further information on legal weighing and on the use of legal lock is available in an
additional manual.
3-34
Weight Indicator TAD 3
4. Calibration
When measuring with TAD 3, the transducer output signal, corresponding to
the transducer load, is converted to a weight value. The conversion is controlled by
several parameters with values defined during calibration of the instrument.
Some calibration types for TAD 3 can be performed without any transducers
connected, but the automatic filter time calculation will be correct only if all
transducers of the weighing equipment are connected to the instrument.
Four calibration types are supported by TAD 3:
• Data sheet calibration - entry of values from transducer data sheet(s).
• Shunt calibration - connection of internal 80 kohm shunt resistor,
entry of corresponding load value.
• Table calibration - entry of recorded values from a previous calibration.
• Deadweight calibration - storing of measured transducer signals for
known weights.
Calibration can only be performed in menu ‘Edit set-up’.
(A ‘Set-up code’ may be demanded, and normal weighing functions must be
interrupted.)
Calibration starts as one calibration type is selected.
To ensure the best possible weighing results, the mechanical installation must be
carried out with great care. Fixed mechanical connections to the scale should be
avoided, or made as flexible as possible and perpendicular to the measuring direction.
If the scale has several transducers connected in parallel, they must have the same
rated load and impedance. If transducers and fixed supports are combined, the load
must be evenly distributed on all supports.
It is recommended to start with a data sheet calibration, which is easy to perform
and gives a fairly good accuracy so the installation can be tested.
Shunt calibration makes it possible to calibrate without loading the scale. Connection
of the internal shunt resistor to the transducer, gives a specified weight reading.
Figure 10. Each transducer from Nobel Weighing Systems is delivered
with a detailed data and calibration sheet.
4-1
Technical Manual
If the weight indicator must be replaced, a table calibration of the replacement unit
can be performed, with recorded values from an earlier calibration.
To get the best accuracy, a deadweight calibration with known weights to at least
2/3 of the measuring capacity, should be performed.
All calibration parameters are found in the menus under ‘Calibration parameters’ and
‘Calibration’. The parameters are described in section 3. Set-up.
Common parameters
For all calibration types, measurement unit and resolution for the weight value, and
the capacity for the scale must be specified. These parameters, among others, are
found in menu ‘Calibration parameters’ and they are explained on pages
3-9 to 3-13. This section deals only with the calibration parameters.
Measurement unit
This parameter defines the engineering unit used for the weight value.
The same engineering unit will also be used for example in the parameter values
‘Resolution’, ‘Capacity’, ‘Level’, and ‘Setpoint’.
Resolution
This parameter defines decimal point position and resolution in weight display.
The decimal point position selected here will be used in setting up, in the displayed
weight value and in the weight value sent to a printer or computer.
Resolution is understood to mean the smallest weight change presented.
Capacity
This parameter defines the nominal range of the scale. This is the capacity of the
scale and should be set to the maximum weight with which the scale is to be loaded.
Even if the scale (transducers) have larger capacity, this value should nevertheless
be set so that the weighing vessel does not become over full if the scale is loaded up
to this value. This parameter is used to calculate certain default values in the set-up,
in checking the maximum zero value (with ZERO key and zero-tracking) and in
checking the maximum permissible setpoint value in batching (option Batching).
4-2
Weight Indicator TAD 3
Number of scale divisions
The number of scale divisions (div.) for a scale = ‘Capacity’ / ‘Resolution’.
To get correct and stable weight display, parameter ‘Resolution’ should be
set so that the number of scale divisions with the selected ‘Capacity’ is
less than 6 000 (10 000).
The number of scale divisions is also limited by the performance of the transducers
and by how large a portion of the transducer capacity that
is actually utilised.
To ensure a stable weight display, the input signal to the instrument
should exceed 0.3 μV/scale division.
Example:
• Three transducers, each of 20 000 N (approx. 2 000 kg), are to support a tank
which, without contents, weighs 3 500 kg. The amount of material in the tank
varies from 0 – 1 000 kg.
• Transducer capacity = 6 118 kg
(3 x 20 000 N / 9.80665).
• Transducer sensitivity = 2.039 mV/V.
• Supply voltage to transducers = 8.4 V (+/-5%).
• Signal from transducers at full load (6 118 kg) = 17 mV
(2.039 mV/V x 8.4 V).
• Signal change in response to an applied load of 1 000 kg = 2.8 mV
(17 mV x 1 000 / 6 118).
• Set 'Capacity' to 1 000 kg.
1.
Set 'Resolution' to 0.1.
Number of scale divisions = 1 000 / 0.1 = 10 000
Signal/scale division = 2.8 mV / 10 000 div. = 0.28 µV/div.
2.
Set 'Resolution' to 0.2.
Number of scale divisions = 1 000 / 0.2 = 5 000
Signal/scale division = 2.8 mV / 5 000 div. = 0.56 µV/div.
It is best to select Case 2, since both the number of scale divisions and
signal/div. are on the borderline in Case 1. In some special cases
the resolution may obviously be driven higher, but the transducer
characteristics must always be observed.
4-3
Technical Manual
Data sheet calibration
Data sheet calibration is recommended as first-time calibration for a new installation.
In data sheet calibration, values from the transducer data sheets are entered as
parameter values, the scale need not be loaded and an accuracy of 0.1 % can be
obtained. The accuracy of TAD 3 itself is 0.005 %. It is essential that no external
forces influence the scale installation. If fixed support points are included in the scale,
the load must be evenly distributed on transducers and fixed supports.
Conv. factor
In transducer data sheets, loads are normally not expressed in the measurement
unit, selected for the scale. This parameter defines a constant by which a weight
value, expressed in the measurement unit, should be multiplied to be expressed
in the data sheet unit.
When using a transducer, calibrated in Newton, in a scale displaying weight values
in kg, the ‘Conv. factor’ shall be the local gravitation constant in m/s2.
The default value, 9.80665, is an international mean value for the gravitation
constant (world-wide range 9.78 – 9.83).
If the data sheet unit is the same as the measurement unit, the conversion factor
parameter should be set to 1.0000.
Number of transd
In weighing applications the load on the scale may be supported by several
transducers or fixed supports. This parameter defines the total number of transducers
and fixed supports in the scale, up to maximum 4.
If the scale has more than 4 support points, this parameter should be set to ‘1’
and the parameter value for ‘Rated load’ and ‘Rated output’ must be calculated.
Rated load
Rated load for a transducer is indicated in the data sheet and should be entered as a
parameter value, expressed in the unit of the data sheet.
NOTE! If the data sheet value is 5 kN, this parameter should be set to 5000 (N).
If several transducers are used in a scale, they must all have the same rated load.
If the scale has more than 4 support points, ‘Number of transd’ should be set to ‘1’
and the value of this parameter should be calculated as:
rated load for one transducer, multiplied by the total number of support points.
Rated output 1 (2, 3, 4)
Rated output is given in the data sheet for every transducer. Parameters will be
available for the number of support points specified in ‘Number of transd’.
For fixed support points the rated output value is 0.00000 (mV/V).
If the scale has more than 4 support points, ‘Number of transd’ should be set to ‘1’
and the parameter value for ‘Rated output 1’ should be calculated as:
the mean value of rated output for all active transducers.
Shunt transd.sig
This parameter shows the stored shunt transducer signal value from last calibration. If
the scale is not installed, skip this parameter or enter a known value.
Press function key EDIT. The function keys change to: <– , CANCEL, SH. ON.
Make sure the scale is unloaded.
Press key SH. ON. An internal 80 kohm shunt resistor is connected to the transducer.
After a while the measured shunt transducer signal will be displayed, and can be
stored by pressing function key STORE.
Alternatively a new value can be entered by the digit keys.
The stored shunt transducer signal value will be used for calibration check in
menu ‘Diagnostics’.
4-4
Weight Indicator TAD 3
Set zero
Set zero is useful only when the scale installation is finished.
After all data sheet values have been entered as parameter values, TAD 3 performs
necessary calculations and then displays the actual gross weight on the scale as a
live weight in this parameter. By the digit keys this value can be set to zero, for
unloaded scale, or to the weight of the known load, for a scale that is loaded.
Zero offset
For an installed scale this parameter shows the zero offset after zeroing, a value that
should not be edited, but recorded in the Set-up list.
For a scale that is not installed it is possible to enter the known weight of fixed
equipment on the scale.
Make a record of the parameter values in the ‘Set-up list’, appendix 2.
To terminate Data sheet calibration, function key BACK, and then EXIT, should be
pressed. In menu ‘Exit set-up’ the values can be saved (or not saved) and that
terminates the calibrating operation.
Shunt calibration
In this method, calibration is performed by connection of a well defined internal shunt
calibration resistor (80 kohm) to the transducer input. This causes a transducer signal
change, corresponding to a known transducer load.
A shunt calibration is based on values from the transducer data sheet and assumes that
no external forces affect the installation. If the installation includes fixed support points,
the load must be evenly distributed on transducers and fixed support points. With shunt
calibration an accuracy of 0.2 % can be obtained, so the data sheet calibration, described
above , is recommended. The accuracy of TAD 3 itself is 0.005 %.
Conv. factor
In transducer data sheets, loads are normally not expressed in the measurement unit,
selected for the scale. This parameter defines a constant by which a weight value,
expressed in the measurement unit, should be multiplied to be expressed
in the data sheet unit.
When using a transducer, calibrated in Newton, in a scale displaying weight values in kg,
the ‘Conv. factor’ shall be the local gravitation constant in m/s2.
The default value, 9.80665, is an international mean value for the gravitation constant
(world-wide range 9.78 – 9.83).
If the data sheet unit is the same as the measurement unit, the conversion factor
parameter should be set to 1.0000.
Shunt cal. force
In this parameter, the shunt calibration force for the connected shunt resistor,
a value from the transducer data sheet, should be entered. The value is expressed in the
data sheet unit. If several transducers are used in parallel,
the mean value of all the shunt calibration force values should be entered.
If fixed support points are included in the installation, the entered parameter value must
be adjusted for this. For one transducer and two fixed support points, only one third of
the total load is measured, so the data sheet value must be multiplied by a factor three.
4-5
Technical Manual
Shunt transd.sig
This parameter shows the stored shunt transducer signal value from last calibration.
If the scale is not installed, skip this parameter or enter a known value.
Press function key EDIT. The function keys change to: <– , CANCEL, SH. ON.
Make sure the scale is unloaded.
Press key SH. ON. An internal 80 kohm shunt resistor is connected to the transducer.
After a while the measured shunt transducer signal will be displayed, and can be stored
by pressing function key STORE.
Alternatively a new value can be entered by the digit keys.
The stored shunt transducer signal value will be used to calculate the weight value
during normal weighing and for calibration check in menu ‘Diagnostics’.
Set zero
Set zero is useful only when the scale installation is finished.
After all parameter values have been entered, TAD 3 performs necessary calculations and
then displays the actual gross weight on the scale as a live weight in this parameter. By
the digit keys this value can be set to zero for unloaded scale, or to the weight of
the known load if the scale is loaded.
Zero offset
For an installed scale this parameter shows the zero offset after zeroing, a value that
should not be edited, but recorded in the Set-up list.
For a scale that is not installed it is possible to enter the known weight of fixed
equipment on the scale.
Make a record of the parameter values in the ‘Set-up list’, appendix 2.
To terminate Shunt calibration, function key BACK, and then EXIT, should be pressed.
In menu ‘Exit set-up’ the values can be saved (or not saved) and that terminates the
calibrating operation.
Table calibration
Table calibration can be used to copy recorded values from a previous deadweight
calibration of the weighing equipment into a replacement instrument. This is performed
by entry of recorded weight values and corresponding transducer signal values into the
instrument. Calibration can be performed for up to 6 points.
The accuracy of the copying procedure is 0.005 %.
Number of cal.p.
Only parameters for the selected number of calibration points will be displayed in
the menu. The number of calibration points can be changed during the calibration.
Value cal. p.1, Value cal. p.2 etc.
These parameters are used for entry of recorded weight values, expressed in
the measurement unit, from a previous deadweight calibration with TAD 3.
Transd.sign. p.1, Transd.sign. p.2 etc.
These parameters are used for entry of recorded transducer signal values for
corresponding calibration points.
4-6
Weight Indicator TAD 3
Shunt transd.sig
This parameter shows the stored shunt transducer signal value from last calibration.
Press function key EDIT. The function keys change to: <– , CANCEL, SH. ON.
A recorded shunt transducer signal value can be entered by the digit keys.
Alternatively, if the scale is installed and unloaded, press function key SH. ON.
An internal 80 kohm shunt resistor is connected to the transducer. After a while
the measured shunt transducer signal will be displayed, and can be stored by pressing
function key STORE.
The stored shunt transducer value is used for calibration check in menu ‘Diagnostics’.
Set zero
Set zero is useful only when the scale installation is finished.
Make sure the scale is unloaded. The actual weight value will be displayed in
this parameter. The value can be set to zero (or any other value) by the digit keys.
Zero offset
This parameter is used for entry of the recorded zero offset value from a previous
deadweight calibration.
If a zeroing has been performed with parameter ‘Set zero’ above, the value of
parameter ‘Zero offset’ need not be changed.
To terminate Table calibration, function key BACK, and then EXIT, should be pressed.
In menu ‘Exit set-up’ the values can be saved (or not saved) and that terminates the
calibrating operation.
Deadweight calibration
This is normally the most accurate calibration type. The transducer signals are
measured and automatically stored when the scale is loaded with known weights.
Calibration can be performed in up to six calibration points, starting with the lowest,
the highest point, or any other order.
Calibration of the lowest point is normally performed with the scale unloaded.
If calibration in two points is used, the second point should be placed as high as
possible, the scale should be loaded with at least 2/3 of the ‘Capacity’.
By calibration in more than two points, the highest calibration point should be placed at,
or higher than, the highest load for which the scale is to be used, and the calibration
points should be evenly distributed in the measuring range.
Number of cal. p
This parameter defines the number of calibration points. Up to six points can be
selected, and parameters for load value and transducer signal will be displayed only
for the selected number of points.
It is possible to change the number of points during the calibration.
Value cal. p.1,
This parameter defines the load for the lowest calibration point. Normally the scale
should be unloaded and the parameter value set to 0 (zero). This weight value and
the corresponding transducer signal value are automatically stored in TAD 3.
4-7
Technical Manual
Value cal. p.2, Value cal. p.3 etc.
The scale should be loaded with known weights. These parameters show the load
according to the previous calibration and the parameter values should be changed to
the value of the known weights. As a parameter value is stored, TAD 3 will also store
the corresponding transducer signal value for that calibration point.
Transd. sign. p.1, Transd. sign. p.2 etc.
These parameters contain the automatically stored transducer signal values for
the calibration points. The values can not be edited.
Shunt transd.sig
This parameter shows the stored shunt transducer signal value from last calibration.
Press function key EDIT. The function keys change to: <– , CANCEL, SH. ON.
Make sure the scale is unloaded. Press key SH. ON. An internal 80 kohm shunt resistor
is connected to the transducer. After a while the measured shunt transducer signal will
be displayed, and can be stored by pressing function key STORE.
Alternatively a new value can be entered by the digit keys.
The stored shunt transducer signal is used for calibration check in menu ‘Diagnostics’.
Set zero
Set zero is useful only when the scale installation is finished.
After all parameter values have been entered, TAD 3 performs necessary calculations and
then displays the actual gross weight on the scale as a live weight in this parameter. By
the digit keys this value can be set to zero, for an unloaded scale, or to the weight of the
known load, for a scale that is loaded.
Zero offset
For an installed scale this parameter shows the zero offset after zeroing, a value that
should not be edited, but recorded in the Set-up list. For a scale that is not installed it is
possible to enter the known weight of fixed equipment on the scale.
Make a record of the parameter values in the ‘Set-up list’, appendix 2.
To terminate Dead weight calibration, function key BACK, and then EXIT, should be
pressed. In menu ‘Exit set-up’ the values can be saved (or not saved) and that
terminates the calibrating operation.
4-8
Weight Indicator TAD 3
5. Operation
General
Weight Indicator TAD 3 with strain gauge transducers is designed mainly for weighing
purposes. The measurement value is displayed at the front panel,
and can also be transmitted to a master computer/PLC, display units, or printers.
The measurement value can also be presented as the output signal from an analogue
output module, connected as additional unit.
Some functions in TAD 3 can be controlled by digital input signals, and several digital
outputs from the instrument can be provided. The number of inputs and outputs may be
expanded by connection of additional I/O units, controlled by parameters in TAD 3.
Power supply
The weight indicator is powered by 24 VDC and should not be turned off during weekends and over-night. Continuous power supply to electronics and transducers prevents
moisture condensation in the units.
Power-up sequence
As TAD 3 is started it enters the Starting up state, displaying programme name and
serial number for some seconds.
If any error is detected during power-up, the sequence stops and an error code
will be displayed. See section 10. Troubleshooting for further information.
If no errors are detected, TAD 3 can enter normal operation (automatic start-up),
displaying actual weight value, possibly together with other instrument information.
If ‘Manual start-up’ is selected, TAD 3 enters the ‘Wait for start’ state, displaying
the text ‘Press ENTER to start operation!’.
If a warm up time has been set, the text ‘Warming up Please wait!’ will be displayed
until the warm up time has expired. Then the instrument will switch over to normal
operation by ‘automatic start-up’ or ‘manual start-up’.
Figure 11. TAD 3 front panel by normal weighing operation.
5-1
Technical Manual
Display alternatives by normal operation
When TAD 3 is in normal operation, the measurement value can always be transmitted
to connected external units. Normally the value is also displayed at the TAD 3 front
panel, but display of other information can also be selected.
See under ‘Main menu’ at page 5-8.
At the TAD 3 front panel the measurement value is displayed in numerical form, with
the selected measurement unit and decimal point position.
A graphic bar, representing the actual gross weight, may also be displayed. Maximum
length of the bar corresponds to the instrument capacity.
Additional information about the measurement value may be displayed to the right:
Net
Net weight is displayed (Net weight = gross weight -tare value).
Zero
The measurement value is within the range of ‘good zero’.
Motion
The measurement value is not stable, according to TAD 3 settings.
When it becomes stable ‘Motion’ disappears after a set delay time.
Print
Printing is performed. If ‘Print’ is flashing TAD 3 is waiting for
stable weight to start the commanded printing.
Information line
More additional information can be displayed on a separate line, together with
the measurement value:
• actual date and time, or
• value of the Preset tare, or
• status for the level supervision, or
• status for the two internal digital inputs and outputs.
One of these alternatives may be selected by set-up parameter ‘Display info’ in
menu ‘Edit set-up/General’.
Actual date and time
In the example below ‘Date/Time’ has been selected.
Date and time can be set in menu ‘Clock set-up’, a sub menu to the instrument
Main menu.
354.5 kg
Net
B
N
2002-12-02 11:18
0
Value of Preset tare
When ‘Preset tare’ has been selected, the graphic representation of the gross weight is
not displayed.
The displayed value of Preset tare (PT) can be edited in menu ‘Preset tare’, a sub menu
to the instrument Main menu.
354.5 kg
Net
B
PT:33.0 kg
0
5-2
N
Weight Indicator TAD 3
Status for the level supervision
When ‘Level status’ has been selected, up to eight boxes will be displayed below the
weight value, one for each Level in use. The boxes have fixed positions, starting with
Level 1 to the left.
When the level of the supervised signal, including influence from the hysteresis,
is above the set ‘Level’, the Level number will be displayed in the box.
In the example Levels 1, 2, 6, 7, and 8 are in use.
For Levels 1, 6, and 7 the level of the supervised signal is above the set ‘Level’.
354.5 kg
1
6
Net
B
N
7
0
Status of internal digital inputs and outputs
In the example below ‘I/O status’ has been selected.
Status of the internal digital inputs and outputs is displayed in four boxes.
To the left, two boxes for input 01 and 02 are displayed, and
to the right two boxes for output 01 and 02.
When a digit (1 or 2) is displayed in a box, that input or output is active.
The example below shows that input 01 and output 02 are active.
354.5 kg
1
Net
B
N
2
0
Security locks
In TAD 3 two security locks are included to prevent unauthorised editing via the panel
keys. The locks can be activated by parameters in menu ‘Edit set-up/General’.
‘Operator lock’ prevents opening of the instrument Main menu and the Batching menu, thus
protecting all set-up parameters and values in the instrument from editing.
‘Set-up lock’ prevents entry in menu ‘Edit set-up’ and ‘Batching parameters’, thus
protecting all set-up parameters in TAD 3 from editing.
But other menus in the instrument Main menu are still available. For example
Instrument name, Edit levels, and Clock set-up.
Codes for the security locks
When a security lock is activated the operator must enter a four digit code to get
access to the protected area. By default the valid code for both locks is ‘1 9 3 7’ ,
but the locks are not activated.
In menu ‘Edit set-up’, sub menu ‘General’, parameters are available to activate
the locks and to change the default code to any four digit code.
The code for the Operator lock can only open the Operator lock.
The code for the Set-up lock will open both Set-up lock and Operator lock.
5-3
Technical Manual
Taring
Taring means storing of a tare value and that TAD 3 switches over to display of
net weight. The net weight being the gross weight minus the tare value.
In TAD 3 two tare values can be stored, Auto tare and Preset tare.
‘Auto’ tare value is the actual gross weight, stored as tare value
when the TARE key is pressed.
‘Preset’ tare is a tare value that can be entered only if TAD 3 is set to use
Preset tare. The value of Preset tare can be entered by the digit keys in
sub menu ‘Preset tare’ under the instrument Main menu. See below.
‘Preset tare’ can also be entered from a master unit by serial communication.
Calibration parameter ’Tare corr.mode’ defines the use of ‘Auto’, ‘Preset’,
or the sum ‘Auto+preset’ by taring.
Auto
Only ‘Auto tare’ is used. ‘Preset tare’ value can not be entered or edited.
Preset Only ‘Preset tare’ is used.
Auto+preset The sum of the ‘Auto tare’ and ‘Preset tare’ values is used.
When the TARE key is pressed, the actual gross weight is stored as
Auto tare value and the instrument will display net weight = ‘– Preset tare’.
With default setting, taring of TAD 3 can be performed, even if the weight is
not stable. But if parameter ‘Motion check’ in ‘Edit set-up/Calibration parameters’
is set to ‘On’, taring will be allowed only when the weight value is stable.
If Calibration parameter ‘Over load check’ is set to Unipolar, taring is not allowed at
negative gross weight.
Taring example:
A combination of Preset tare and Auto tare is useful in weighing operations when
it is inconvenient or impossible to separate a packing and its contents.
• The packing must be weighed to establish a ‘known weight’ for it.
• Go to ‘Edit set-up’ (see page 3-3), menu ‘Calibration parameters’ and set parameter
‘Tare corr.mode’ to Auto+preset. Save the new setting.
• Go to menu ‘Preset tare’ in the instrument Main menu and enter the packing weight
as parameter value.
• Press the TARE key when the scale is not loaded, or loaded with permanent help
equipment only. The Preset tare value will be displayed as negative
net weight.
• Put the packing with contents on the scale.
The weight of the contents will be displayed as net weight.
354.5 kg
Net
B
N
PT:33.0 kg
0
Figure 12. To the right on the panel four keys are provided with symbols for taring,
toggling between gross and net weight, printing, and zero adjustment.
5-4
Weight Indicator TAD 3
Gross/Net operation
At normal operation TAD 3 presents a numerical weight value at the display, either
gross weight or net weight. When net weight is displayed the text ‘Net’ is added to
the right of the value.
Toggling between display of gross weight and net weight can be performed by
pressing the GROSS/NET key.
Gross weight is continuously shown in form of a graphic bar at the display, except if the
value of Preset tare is shown. Maximum length of the bar corresponds to
the set Capacity of the instrument.
Net weight is the difference between gross weight and a tare value. For calculation of
net weight, TAD 3 can use either ‘Preset’ tare, ‘Auto’ tare, or the sum of them.
Net weight can not be displayed if the tare value in use is zero (0).
Zero setting
A basic zero setting of the gross weight is performed as part of the calibration for the
scale. If changes to the weighing equipment are made later a renewed calibration, or at
least the zero setting of a calibration, should be performed.
Minor correction of the zero value may be needed and can rapidly be performed:
When a gross weight close to zero is displayed, pressing the ZERO key
will make the gross weight zero.
Pressing the ZERO key will also set the value of ‘Auto tare’ to zero.
Zero setting with the ZERO key is permitted only if:
- the weight is stable (the text ‘Motion’ not shown), and
- the accumulated zero correction since last calibration is between
-1 % and +3 % of the ‘Capacity’, over and above the zero offset
obtained when the instrument was calibrated last time.
The text ‘Zero’ will be shown to the right on the display when the displayed weight is a
’good zero’, meaning that the weight deviates from zero with less than one quarter of
the set ‘Resolution’.
Actual transducer load.
Net weight
Gross weight
Empty scale - loaded with
permanent equipment only.
Installation setting.
Unloaded transducers.
Tare value: auto,
fixed or auto+fixed
Range for zero adjustment
Zero value and zero-tracking.
Figure 13. Correlation between gross weight, net weight,
and tare value for a scale.
5-5
Technical Manual
Zero-tracking/Automatic zero setting
In TAD 3 the functions zero-tracking and automatic zero setting can be enabled.
Zero-tracking gives a continuous zero setting by slow changes in zero weight. The
automatic zero setting performs zeroing of small negative gross weights.
For both functions the following requirements should be met:
The zero point stays within the permissible range, deviation from
calibrated zero less than -1 % to +3 % of Capacity.
No setpoint function is activated (armed).
Batching (programme option) is not performed.
Zero-tracking
Zero-tracking is active when, in addition to the common requirements above,
the following requirements are met:
Calibration parameter ‘Zero-tracking’ is set to On or On+AutoZero.
The gross weight is ‘good zero’ (deviation from zero less than
one quarter of Resolution).
The weight is stable (the text Motion not shown).
The rate of weight change is lower than the ‘zero-track.rate’, see below.
The set-up parameter ‘Zero-track.rate’ determines the maximum permissible weight
change per minute for the zero-tracking. If parameter ‘Resolution’ is changed, the value
of ‘Zero-track rate’ will change correspondingly.
Automatic zero setting
Automatic zero setting is active when, in addition to the common requirements above,
the following requirements are met:
Calibration parameter ‘Zero-tracking’ is set to On+AutoZero.
The gross weight is negative.
TAD 3 is in gross mode.
The weight has been stable (the text Motion not shown) for 5 seconds.
Motion
The text ‘Motion’ may be shown to the right in the display. This will happen for
an unstable weight value if it has changed by more than the set ‘Motion detect w.’
between two internal weight calculations (one-tenth of the filter time).
After the weight becomes stable, the text ‘Motion’ will still be shown for a short time,
specified in parameter ‘No-motion delay’. TAD 3 will regard the weight as unstable until
the text ‘Motion’ has disappeared.
When the text ‘Motion’ is shown, the following activities are affected:
Zero setting can not be performed.
Zero-tracking can not be performed.
Taring can not be obtained (applies if ‘Motion check’ is ‘On’).
Printout of weights is delayed until stable weight is obtained
(applies if ‘Motion check’ is ‘On’).
5-6
Weight Indicator TAD 3
Print function
General
A printer must be connected to one of the TAD 3 serial communication ports and the
communication parameters must be correctly set.
See section 6. Communication, page 6-21 and
section 3. Set-up, pages 3-20 to 3-25.
Printing of displayed weight
The displayed weight value in TAD 3 can be printed out on a connected printer,
but on certain conditions:
• The displayed weight must be higher than the value of ‘Min.weight print’
in sub menu ‘Edit set-up/Calibration parameters’ (page 3-11).
If the weight is too low, an error message will be shown.
• If parameter ‘Motion check’ in menu ‘Edit set-up/Calibration parameters’ is set to
‘On’, the displayed value must be stable (‘Motion’ not shown). Parameter ‘Motion
detect w.’ in the same sub menu defines ”stable weight”.
If the weight is not stable (‘Motion’ shown), printing will be delayed and the text
‘Print’ will be flashing. When the weight has become stable (‘Motion’ not shown)
printing will be performed.
When a displayed weight value is printed, it will also be added to the value
‘Printed’ in Accumulated weight, a sub menu to the instrument Main menu.
Printing of displayed flow rate (program option)
The displayed flow rate value in TAD 3 can always be printed out on
a connected printer.
Other printouts
A printer, connected to TAD 3, can also be used for printing of other data for
the instrument.
Printing of Accumulated weight values
If PRINT is pressed, when sub menu ‘Accumulated weight’ is open, and editing
is not performed, the accumulated weight values will be printed out,
together with actual date/time and Instrument name for the TAD 3.
See example on page 6-23.
Printing of Level and Setpoint values
If PRINT is pressed when sub menu ‘Edit levels’ is open, and editing is not performed,
the actual values for the Levels and Setpoints in use will be printed out, together with
actual date/time and Instrument name for the TAD 3.
See example on page 6-23.
Printing of set-up parameter values
If PRINT is pressed when sub menu ‘Show set-up’ or ‘Edit set-up’ is open, printing of a
complete list of all set-up parameter values can be performed.
The printout will take several minutes to conclude.
See example on page 6-23.
5-7
Technical Manual
Main menu
Figure 14.
When TAD 3 performs normal weighing, the instrument Main menu can be opened
without interrupting the weighing operation.
Press digit key 0, also marked i , to open the instrument Main menu.
If the ‘Operator lock’ is activated, TAD 3 will request the four digit ‘Operator code’ to
allow entry in the instrument Main menu.
In the instrument Main menu, several sub menus are available for display of other
information or for entry of new values.
The sub menus are described in this manual and in manual ‘Operating instructions, Quick
installation’ for Weight Indicator TAD 3.
Instrument name:
A name to identify the instrument in printed reports etc.
See page 5-9 and
‘Operating instructions, Quick installation’.
Preset tare:
A fixed tare value for the scale.
See page 5-9 and
‘Operating instructions, Quick installation’.
Edit levels:
Edit Level values and show Setpoint values.
See page 5-9 and
‘Operating instructions, Quick installation’.
Accumulated weight:
Show and edit accumulated weight values.
See page 5-9 and
‘Operating instructions, Quick installation’.
Batching:
See section 7. Batching.
Batching parameters: See section 7. Batching.
Show set-up:
Show all used set-up parameter values.
See section 3. Set-up.
Edit set-up:
Edit set-up parameter values.
See section 3. Set-up.
Clock set-up:
Setting of actual date and time.
See page 5-10 and
‘Operating instructions, Quick installation’.
Information:
Show some important instrument data.
See page 5-10.
i 0
'Operator code'
may be demanded!
Main menu
Instrument name
Preset tare
Edit levels
Accumulated weight
Batching
Batching parameters
Show set-up
Edit set-up
Clock set-up
Information
BACK
UP
DOWN
ENTER
Figure 14. In the instrument Main menu a sub menu can be selected
by the cursor and then opened by function key ENTER.
5-8
Weight Indicator TAD 3
Instrument name
In this sub menu an instrument name can be entered. This name can serve to identify
the instrument in printouts. The instrument name can be made up of digits, upper case
letters, and lower case letters.
Preset tare
Sub menu ‘Preset tare’ in the instrument Main menu can be opened only if parameter
Tare corr.mode in menu ‘Calibration parameters’ is set to
‘Preset’ or ‘Auto+preset’.
When sub menu ‘Preset tare’ is open, the numeric Preset tare value can be
edited after function key EDIT has been pressed.
Edit levels
In this menu actual supervision levels for the used Level are shown and can be edited.
Used Setpoint values are also shown, but can only be edited from a master
computer/PLC.
Editing of a Level value is performed like for ”numerical” set-up parameters,
see pages 3-4 and 3-5.
The Level value can be set positive or negative up to 99999, using the measurement
unit that is set for the instrument.
Accumulated weight
TAD 3 is capable of storing accumulated weight values up to 10 000 000 000,000.
When this limit is passed, 10 000 000 000 will be subtracted from the value.
One accumulated weight value is called ‘Printed’. Every time the PRINT key
is pressed, and the text ‘Print’ is shown, the actual displayed weight will be added to
the value ‘Printed’ (even if no printer is connected to TAD 3).
By default the value ‘Printed’ is shown. If the Batching function is activated,
accumulated values for the batched components will also be shown.
All values can be edited (set to zero) according to instructions on pages 3-4
and 3-5 for numerical parameters.
Show set-up
All set-up parameters in TAD 3 are arranged in menus, as shown in figure 8 on page 32. In this sub menu the setting of all set-up parameters can be shown, but the values
can not be edited.
Edit set-up
All set-up parameters in TAD 3 are arranged in menus, as shown in figure 8 on page 32. In this sub menu the setting of all set-up parameters can be shown.
Parameter values can also be edited, see editing procedure on pages 3-4 and 3-5.
5-9
Technical Manual
Clock set-up
Date and time information can be presented at the TAD 3 display and in printouts
from the instrument. Setting of correct date and time is performed in ‘Clock setup’, a sub menu to the instrument Main menu.
Editing of data in ‘Clock set-up’ is performed like for other ”numerical” parameters, see
pages 3-4 and 3-5.
Settings are available for:
Year (up to 2095), Month (1 – 12), Day (1 – 31), Hour (0 – 24), and Minute (0 – 60).
Information
In sub menu Information some important data and measured live values for TAD 3 are
displayed. No values can be edited in this menu.
I nf or m
at i on: ( I nst r . nam
e) 001
COM
1: 9600
0354. 50 kg
COM
2: 9600
1. 58245 m
V/ V
A1: 13. 51 m
A D1: OK Pr g: T002A240
A2: 5. 27 V D2: - - S/ N: 0
On the first line the instrument name and instrument address are shown.
On the second and third lines, to the left,
baud rates are shown for the serial communication ports Com 1 and Com 2.
When a correct message is received on Com 1 or Com 2, the text COM1: and COM2:
respectively flashes.
On the second and third lines, to the right,
actual gross weight value and transducer signal in mV/V is shown.
On the bottom lines, to the left,
actual output signals from the analogue output units in use are shown.
If a used analogue output unit is out of order, this is indicated by a broken line.
On the bottom lines, in the middle,
status for the DIO 3-units in use is shown as ‘OK’ or ‘– –’ (error).
On the bottom lines, to the right,
the instrument’s programme name and serial number are shown.
Press the function key marked ← or the key ↵ to switch TAD 3 back to
the instrument ‘Main menu’.
Level supervision
TAD 3 contains eight supervision Levels that can be used to supervise defined signals
in the instrument. Both internal and external digital outputs can be connected as
outputs for the Levels.
For each Level, hysteresis and operation mode for the digital output is controlled by
set-up parameters.
Functions for Level supervision are defined in menu ‘Edit set-up’ by parameters
in the sub menus ‘Level supervision’ and ‘Outputs’.
5-10
Weight Indicator TAD 3
‘Level X source’
In sub menu ‘Level supervision’, parameters are available to set each Level to
‘Not in use’, or to define the input signal for the Level. See pages 3-26 and 3-27.
Select ‘Net weight’ or ‘Gross weight’ to supervise these weight values, independent of
which weight that is actually displayed.
Select ‘Disp. weight’ to supervise either gross weight or net weight, depending on which
weight that is actually displayed.
‘Flow rate’ can only be used if the Flow option is activated in TAD 3.
Select ‘Abs. net.w.’, ‘Abs. gross.w.’, ‘Abs. disp.w.’ or ‘Abs. flow r.’ to act on
the absolute value of these signals, i.e. the value independent of polarity.
The ‘source’ parameter for Level 2 – Level 8 can also be set to ‘Offset lev.1’.
Then that Level will use the same input signal as Level 1. The supervised level
will be at a fixed offset from Level 1, defined by ‘value’ for the Level.
If a value other than ‘Not in use’ is selected for a Level, more parameters for
that Level will be shown.
‘Level X outp.’:
Defines how a digital output, if connected to the Level, should operate.
The parameter can be set to make an output active when the signal is above
the Level, or when it is below the Level.
‘Level X hyst.’:
Defines the width of a hysteresis range for the Level. The definition of a negative
hysteresis range starts with a minus sign( - ).
Hysteresis is an intentional difference between the switch levels for increasing
and decreasing signal level. One switch level is always at the defined Level.
The other switch level is at a higher level by positive hysteresis, at a lower level
by negative hysteresis. See figure 15.
Level status
Actual status of the Levels (input signal above or below Level) can be read via
the serial communication and shown at the TAD 3 display. See pages 5-2 and 5-3
about the Information line ‘Status for the level supervision’.
That information line includes the influence from hysteresis, but it does not show the
status of any digital outputs, connected to the Levels.
Level 1 hyst.
positive
Above Level 1
Below Level 1
Level 2 hyst.
negative
Above Level 2
Below Level 2
Level 1
Level 2
Increasing
signal
Figure 15. Influence on the level supervision from positive hysteresis,
for Level 1, and negative hysteresis, for Level 2.
5-11
Technical Manual
Setpoint function
General
The two Setpoints can be used for fast, accurate and reliable supervision of weight
values. The Setpoint function is of a one shot type, the function is activated by a
command from the master computer/PLC and deactivated
when the weight has reached the Setpoint value.
The Setpoints can be connected to any digital output in the TAD 3 system for flexibility.
The status of the Setpoints can be found in modbus register ”Status 2”.
The Setpoints can only be controlled by a master computer/PLC via serial
communication. The Setpoint is loaded into the modbus registers using
modbus function 06 or 16. Commands can be sent to the instrument by loading
the command number in the modbus ”Command register” or by setting corresponding
”Coil”, using modbus function 15.
NOTE: To ensure good operation during the time when a setpoint is activated,
the zero-tracking function is not working.
Set-up
The selection of the setpoint functions are made in set-up parameter
”Setpoint 1 source” and ”Setpoint 2 source”. In these set-ups you can select
which signal (weight value) the setpoint shall act on.
Connection of a setpoint to an output is made in set-up menu ”Outputs”.
Operation
The wanted setpoints (weight levels) must be loaded into the modbus registers called
‘Setpoint 1 value’ and ‘Setpoint 2 value’.
The setpoint(s) are activated by sending command ”Activate setpoint 1”,
”Activate setpoint 2 ” or ”Activate setpoint 1 and 2” to the instrument
(command 1, 3 and 5). If a setpoint is connected to an output, then
corresponding digital output is activated.
When the selected weight becomes higher than the setpoint the setpoint function is
deactivated and the corresponding ”Setpoint cycle done” bit is set. A possible
connected digital output is also deactivated at the same time.
The setpoint function, and possible connected digital outputs, can also be deactivated
by sending command ”Deactivate setpoint 1”, ”Deactivate setpoint 2” or ”Deactivate
setpoint 1 and 2” (command 2, 4 and 6).
NOTE The ”Setpoint cycle done” bit for a setpoint is reset when the setpoint value is
loaded and when the setpoint is activated.
5-12
Weight Indicator TAD 3
Use of inputs and outputs
Internal I/O’s are included in TAD 3, two digital inputs and two digital outputs.
Additional digital I/O units and analogue output units can be connected, communicating
with TAD 3 by ‘I/O bus’ through serial port Com 2.
Each unit can be set to I/O unit 1 or 2, Analogue output 1 or 2 respectively.
All input and output functions are controlled by set-up parameters in TAD 3.
Parameter editing can only be performed in sub menus to ‘Edit set-up’, when normal
measuring functions are interrupted.
Digital inputs
Inputs 01 and 02 are the internal digital inputs in TAD 3.
Inputs 11 – 18 and 21 – 28 are the digital inputs to TAD 3 via
additional I/O unit 1 and I/O unit 2 respectively.
The digital inputs can be used for remote operation of the instrument.
If the flow rate option or batching option is activated, the digital inputs can be set to
perform flow rate or batching operations.
Digital input functions are defined by parameters in sub menu ‘Inputs’,
see page 3-28.
Parameter editing is described on pages 3-4 and 3-5.
Digital outputs
Outputs 01 and 02 are the internal digital outputs from TAD 3.
Outputs 11 – 18 and 21 – 28 are the digital outputs from TAD 3 via
additional I/O unit 1 and I/O unit 2 respectively.
The digital outputs can be used for control of external equipment and for indication of
instrument status.
If the flow rate option or batching option is activated, the digital outputs can also be
connected for control and indication of flow rate and batching functions.
Digital output functions are defined by parameters in sub menu ‘Outputs’,
see page 3-29.
Parameter editing is described on pages 3-4 and 3-5.
Analogue outputs
To produce analogue outputs from TAD 3, one or two additional units ANA 3
must be connected to serial communication port Com 2.
The analogue output signal will represent a selected signal in TAD 3 in form of
an analogue current or voltage signal.
All analogue output functions are defined by parameters in sub menu
‘Analog outputs’, see pages 3-30 to 3-33.
Parameter editing is described on pages 3-4 and 3-5.
5-13
Technical Manual
Filter function
In TAD 3 the weight value is produced in two forms, unfiltered and filtered.
The unfiltered weight value represents the transducer load with the smallest delay. This
means that the instrument will respond rapidly to load changes,
but the weight display will be unstable if the load is fluctuating.
The filtered weight value will give a smoother weight display, but the response
on load changes will be delayed.
Filter window (filtered weight – unfiltered weight).
The instrument can automatically switch between unfiltered and filtered weight
in order to make the weight display fast when the load on the scale changes, but stable
for constant load. The difference between the two latest filtered weight values is
checked and parameter ‘Filter window’ defines at which difference
the switch over should take place.
If the difference is smaller than ‘Filter window’, the filtered weight will be used.
Filter function (filtered weight).
The parameter ‘Filter type’ can be used to make the filtered weight value respond more
slowly or more rapidly to changing load on the scale. The filtered weight is
a true mean value of the weight value during one filter time period. If the load on the
scale is fluctuating, for instance on account of a stirrer, a prolonged filter time can be
set in order to get a more stable weight display.
The instrument calculates a filter time (standard), based on the actual calibration, as a
reference value for the other fixed filter times.
If ‘Filter type’ is set to Standard (default) the instrument will select
the calculated filter time.
If ‘Filter type’ is set to Long the instrument will select
a filter time, four times the calculated filter time.
If ‘Filter type’ is set to Short the instrument will select
a filter time, one fourth of the calculated filter time.
If ‘Filter type’ is set to Special a filter time value can be
entered for parameter ‘Filter time’.
In all these cases ‘Filter time’ will be automatically set to the nearest higher value that
is a multiple of 200 ms (50 Hz) or 166.67 ms (60 Hz).
The range for ‘Filter time’ is 167 – 20 000 ms.
The instrument updates the internal weight 10 times per Filter Time Period,
implying that: Weight Conversion Time = ‘Filter time’ / 10.
Settling time for unfiltered weight is 2 – 3 times ‘Filter time’ / 10.
At calibration TAD 3 will calculate and set the filter time automatically. The instrument
measures the sense voltage as a parameter for this calculation, so table or data sheet
calibration without actual transducers connected will produce a random result.
To set a filter time value under these conditions, use filter type special and enter
the wanted value.
With data from the installation entered in the formula below and the result applied in the
diagram on next page, the expected standard filter time will be found. The variation in
sense voltage caused by the number of transducers is shown in the diagram for low cable
resistance. High cable resistance has the same influence direction as more transducers.
Higher sense voltage caused by the use of external excitation will give lower filter time.
5-14
Weight Indicator TAD 3
Formula to get ‘mV/V to division’:
resolution ⋅ transducer rated output ⋅ conversion factor mV / V
=
division
number of transducers ⋅ rated load
‘transducer rated output’ is the mean value of Rated output
at rated load for all connected load cells.
Example:
The figures used in the example on page 4-3 will give:
0.2 kg / div ⋅ 2.039 mV / V ⋅ 9.80665 N / kg
mV / V
= 0.000067
3 ⋅ 20 000 N
division
With 3 transducers this will make the filter time 20 000 ms.
To make the scale faster, select filter type ‘Short’ (5 000 ms) or
filter type ‘Special’ and then a suitable filter time.
Another way is to set Resolution to 0.5 kg, which will make the filter time 800 ms.
5-15
Technical Manual
I/O bus connection
Additional units with input and output functions can be used together with TAD 3.
These units, described in section 9, communicate through serial port Com 2 by
the ”I/O bus”, a Modbus protocol on RS-485.
Up to four additional units can be connected to Com 2. Two DIO 3 units with
eight inputs/outputs each and two ANA 3 units with one analogue output each.
Each DIO 3 unit also has one serial communication port.
When Com 2 shall communicate with additional units over the I/O bus, parameter
‘COM2:Mode’ in menu ‘Edit set-up/Communication’ must be set to ‘I/O bus’.
This setting will make parameters for two more communication ports, COM3
and COM4, available. By parameter setting COM3 and COM4 can be located at the
serial ports of two connected DIO 3 units.
5-16
Weight Indicator TAD 3
6. Communication
TAD 3 has two serial communication ports, primarily used for communication with
a control unit. Alternatively they can be used for data transmission to an external
display, printer or I/O modules (Com 2 only).
Communication interface
TAD 3 is equipped with 2 serial communication ports: Com 1, Com 2.
Com 1 has both RS-232 communication, using a 9-pole D-sub socket at TAD 3,
and RS-485 communication (can’t be used simultaneously).
Com 2 communicates by RS-485 only.
The serial communication utilises RS-485 for 2-wire or 4-wire. RS-485 is an
interface working with differential voltages, giving a noise resistant transmission in
a network with several units and long distances. The host computer (master) must
have an asynchronous communication port for RS-485, or use a converter,
e.g. Westermo MA-42 for RS-232 to RS-485 conversion.
If 2-wire transmission is used, the control unit must be capable of data flow
direction control or utilise a converter for automatic data flow direction control
e.g. Westermo MA-44.
When 4-wire transmission is used, no data flow direction control is needed.
When the RS-232 port is used it’s possible to communicated with one TAD 3 directly
from a PC without using a converter.
Transmission principles
All the TAD 3 units connected to the network can listen to what is transmitted in the
network, but only one unit at a time may transmit. A time sharing principle is
needed to allow communication in both directions (half duplex).
All communication in the network must be initiated by the control unit (master).
When TAD 3 is working together with a master the TAD 3 units are all slaves, only
allowed to reply to master commands. As the master has addressed a command
message to a specific slave unit, it listens for the reply during a specified time,
before sending next command message.
If the reply from a slave unit fails it may be due to:
–
Mismatch in communication parameters. (baud rate, address, . . )
–
More than one slave unit has been transmitting at the same time.
This can distort the reply message and make it impossible to decode.
I/O bus
When more in/out functions are needed (digital I/O, analogue outputs or
serial communication ports), additional I/O units can be connected to TAD 3.
When additional I/O units are used, Com 2 is occupied for this purpose.
See section 9. Additional units.
6-1
Technical Manual
Modbus
General
For communication with a master computer (PLC) the Modbus protocol is used in
the TAD 3. The Modbus protocol is a standard protocol, used for master/slave
communication in the industry. The TAD 3 implementation works with the Modbus RTU
format (the ASCII format is not supported).
Information is transmitted in blocks of data to minimise polling and response time
delays. For example both the error register, status register and weight register could be
read with one command to the TAD 3.
When a command that can not be performed is sent, the TAD 3 responds with
an exception code. For a better explanation of the error, a special error register could
be read.
Depending on the type of the communicating equipment (the master), the commands in
the application programme (PLC programme, or pc programme) may be different from
type to type. However, if the master is not a Modicon PLC system, then the Modbus
implementation in the master must have some cross-reference function to transfer the
Modbus register and I/O bit numbering to the masters own register and
I/O bit numbering. All registers and coils described in this manual uses the standard
Modbus (Modicon) register and I/O numbering.
See the masters own Modbus driver documentation for how the commands should be
activated in the masters application programme.
Most manufacturers of PLC systems and HMI and SCADA software can provide
Modbus drivers. Various Modbus drivers for development of Windows programs are
also available on the market.
For detailed information about the Modbus protocol see:
Modicon Modbus Protocol Reference Guide PI-MBUS-300 Rev.D.
Setup of Modbus communication
• Set parameter ‘COMx:Mode’ (in ‘Edit set-up’, menu ‘Communication’)
to ‘Modbus auto’. The baudrate and bit settings will be autodetected.
• The TAD 3 will as default be given the address 1. If more than one TAD 3 is
used in a network, each TAD 3 must be given a unique address in parameter
‘Instrum. address’.
• When longer response times are needed, set ‘COMx:Mode’ to ‘Modbus’
and select the correct ‘Baudrate’ and ‘Data format’. See Technical data.
Register description
TAD 3 has a number of Modicon 'Holding Registers' (registers 4XXXX ... ).
The Modbus function 03 'Read Holding Registers' should be used to read these
registers and the Modbus function 05 'Preset Single Register' or 16 'Preset Multiple
Registers' should be used to write to the registers.
See section ‘Data representation’ for a description of the different data formats used.
Hint: To find out which of the float formats that should be used, read
the ‘Instrument type’ register (40200/45200) which equals ‘2003’ for TAD 3.
6-2
Weight Indicator TAD 3
General registers
Data type:
Integer
Data type:
Float
(2 reg./value)
Data type:
Modicon float
(2 reg./value)
Explanation
R/W
40001 (1 reg)
40200
45200
Instrument type
R
40002 (1 reg)
40202
45202
Program number
R
40003 (1 reg)
40204
45204
Program version
R
40004 (3 reg)
40208
45208
Serial number
R
40007 (1 reg)
40210
45210
Command error
R
40008 (1 reg)
40212
45212
Instrument state
R
40009 (1 reg)
40214
45214
Instrument error
R
40010 (1 reg)
40216
45216
Status 1
R
40011 (1 reg)
40218
45218
Status 2
R
40012 (3 reg)
40220
45220
Gross weight
R
40015 (3 reg)
40222
45222
Net weight
R
40018 (3 reg)
40224
45224
Flow rate (Option)
R
40021 (3 reg)
40226
45226
Analogue outp. value 1
R
40024 (3 reg)
40228
45228
Analogue outp. value 2
R
40027 (3 reg)
40230
45230
Input signal (mV/V)
R
40030 (1 reg)
40232
45232
Command register
R/W *
40031 (3 reg)
40234
45234
Setpoint 1 value
R/W
40034 (3 reg)
40236
45236
Setpoint 2 value
R/W
40043 (1 reg)
40242
45242
External input status
R/W**
40044 (1 reg)
40244
45244
External output status
R/W**
40045 (1 reg)
40246
45246
Level status
R/W**
40100 to -110
40300 to -309
45300 to -309
Last act. reg. See 7-30.
R
40114 to -158
40314 to -347
45314 to -347
Last b. reg. See 7-31.
R
40162 to -174
40350 to -363
45350 to -363
Curr. b. reg. See 7-32.
R
*/ The read value is always ‘zero’.
**/ Write to these registers is allowed, but has no effect!
Important:
‘Net weight’, ‘Gross weight’ and ‘Flow rate’ registers are only valid when ‘Instrument
error’ register equals 0. Therefore it’s recommended to read
the ‘Instrument error’ register together with these registers.
6-3
Technical Manual
General registers cont.
Data type:
Integer
Data type:
Float
(2 reg./value)
Data type:
Modicon float
(2 reg./value)
Explanation
R/W
44003 (3 reg)
41802
46802
Clock: Year
R/W
44006 (3 reg)
41804
46804
Clock: Month
R/W
44009 (3 reg)
41806
46806
Clock: Day
R/W
44012 (3 reg)
41808
46808
Clock: Hour
R/W
44015 (3 reg)
41810
46810
Clock: Minute
R/W
44039 (3 reg)
41826
46826
Level 1 value
R/W
44042 (3 reg)
41828
46828
Level 2 value
R/W
44045 (3 reg)
41830
46830
Level 3 value
R/W
44048 (3 reg)
41832
46832
Level 4 value
R/W
44051 (3 reg)
41834
46834
Level 5 value
R/W
44054 (3 reg)
41836
46836
Level 6 value
R/W
44057 (3 reg)
41838
46838
Level 7 value
R/W
44060 (3 reg)
41840
46840
Level 8 value
R/W
44063 (3 reg)
41842
46842
Preset tare value
R/W
44066 (3 reg)
41844
46844
Setpoint 1
R/W
44069 (3 reg)
41846
46846
Setpoint 2
R/W
44072 to -095
41848 to -863
46848 to -863
Batch data reg.
See 7-32.
R/W
Accumulated weight registers
Data type:
Integer
Data type:
Float
(2 reg./value)
Data type:
Modicon float
(2 reg./value)
Explanation
R/W
40760 (3 reg)
40600
45600
Printed acc. weight
LOW
R/W
40763 (3 reg)
40602
45602
Printed acc. weight
HIGH
R/W
40766 to -807
40604 to -631
45604 to -631
Batching reg.
See 7-33.
R/W
Accumulated weight is represented by two values (HIGH, LOW). To get the resulting
value multiply value HIGH by 10000 and add value LOW. LOW is a value between
±9999.999 with 3 decimals. HIGH is a value without decimals between ±999999.
To zero accumulated weight send 0 to both HIGH and LOW.
6-4
Weight Indicator TAD 3
String registers
Data type: string
Explanation
R/W
44696 (6 reg)
Instrument name
R/W
Instrument type
This register holds the type of the instrument. For TAD 3 this value is 2003.
Program number
This register holds the program number of the TAD 3. Normal programs has
a value below 100 and special programs a value above 100.
Program version
This register holds the program version of the TAD 3. The value 100 means 1.00.
Serial number
This register holds the serial number of the instrument. The value 991000 means
99-1000. This can be used by the master to be sure that an instrument with a specific
serial number is used for a special process.
Command error
This register holds the error code when a command has been sent to the TAD 3.
A command that gives a 03 or 07 as exception will have an error code with a better
description of the problem in this register. For an explanation of the error codes see
section 10 Troubleshooting. Normally this register should contain ‘00’ which means
no error. Error codes 100 to 65535 are valid in this register.
6-5
Technical Manual
Instrument state
This register contains the state of the TAD 3 unit.
Code
Description
00
‘Starting up’ state.
The instrument is starting up after a reset or power on.
01
‘Wait for start’ state.
The TAD 3 is waiting for a start command to go in process.
02
‘Normal’ state.
There are no parameter errors in the system.
Note: Weight errors still indicates normal state.
03
‘Local Set-up’ state.
Someone is modifying the set-up parameters from the front of the TAD 3.
It’s not possible to enter Remote Set-up or Remote Restore state
from here.
04
‘Remote Set-up’ state.
A master computer is modifying the set-up parameters in the TAD 3.
It’s not possible to enter Local Set-up state from here.
05
‘Remote Restore’ state.
A master computer is restoring set-up data to TAD 3.
It’s not possible to enter Local Set-up state from here.
06
‘Error’ state.
An error has been detected during start up of the instrument.
07
‘Fatal error’ state.
An error has been detected during start up of the instrument.
It’s not possible to enter any other state from here.
08
‘Test’ state.
TAD 3 is running in a special mode used for service and production test.
09
‘Warming up state’
The parameter ‘Warm up time’ is set to a value other than zero, and
TAD 3 is waiting for the warming up time to pass.
99
‘Boot’ state.
The TAD 3 is ready to receive a new program.
Instrument error
This register holds the error code in the TAD 3, for example weight, RAM, Flash,
EEPROM errors.
For an explanation of the error codes see section 10. Troubleshooting.
Normally this register should contain ‘00’ which means no error.
Error codes 000 to 099 are valid in this register.
6-6
Weight Indicator TAD 3
Status 1
Bits set to 1 in this register have the following meaning:
Bit no Function
Comment
0
Net weight > INT size
The net weight in ‘scaled integer’ format does
not fit in one register.
(See description of data representation.)
1
Gross weight > INT size
The gross weight in ‘scaled integer’ format does
not fit in one register.
(See description of data representation.)
2
Flow rate > INT size
The flow rate in ‘scaled integer’ format does not
fit in one register.
(See description of data representation.)
3
Good zero (disp. weight)
4
Good zero Gross
5
Good zero Net
6
Net Mode
'1' = Net mode
7
Motion
Unstable weight
8
Calibration resistor on
Internal shunt resistor connected.
11
Flow rate display
Flow rate is shown in the display.
12
Net weight > 6 digits
The net weight value is out of precision and
should normally not be used.
13
Gross weight > 6 digits
The gross weight value is out of precision and
should normally not be used.
14
Remote operation
‘1’ = On
15
Calibration edits allowed
‘0' = Gross mode
9
10
‘0’ = Off
Note: If this register (bits) is read as float value, see description
of Data representation.
6-7
Technical Manual
Status 2
Bits set to 1 in this register have the following meaning:
Bit no
Function
Comment
0
Output 01 activated
Internal relay 1 active.
1
Output 02 activated
Internal relay 2 active.
2
I/O bus error
An error on the I/O bus is present.
3
Analogue output 2
voltage/current
'0' = current
4
Power failure
The 'power failure' bit is cleared when a
'Read Holding Reg.' (function 03) command reads
this register Status 2 (however, the reply contains
the set bit, if it was set ).
6
RESERVED
Always 0.
7
Digital input 01 activated
24V signal active on digital input 01.
8
Digital input 02 activated
24V signal active on digital input 02.
9
Above Level 1
The weight is above Level 1.
10
Above Level 2
The weight is above Level 2.
11
Analogue output 1
voltage/current
'0' = current
12
Setpoint 1 activated
See description of setpoint function.
13
Setpoint 2 activated
See description of setpoint function.
14
Setpoint 1 cycle done
See description of setpoint function.
15
Setpoint 2 cycle done
See description of setpoint function.
‘1' = voltage.
5
‘1' = voltage.
Note: If this register (bits) is read as float value, see description
of Data representation.
6-8
Weight Indicator TAD 3
Gross weight
This register holds the gross weight. The weight should not be read alone because
the status and error codes are stored in other registers. The weight is only valid when
the register ‘Instrument error’ equals 00.
A good choice is to read at least the registers 40009 – 40014 (integer)
or the registers 40214 – 40221 (45214 – 45221) (float).
Note: When shunt relay is connected, this is the shunt test value.
Net weight
This register holds the net weight. The weight should not be read alone because the
status and error codes are stored in other registers. The weight is only valid when
the register ‘Instrument error’ equals 00.
A good choice is to read at least the registers 40009 – 40017 (integer)
or the registers 40214 – 40223 (45214 – 45223) (float).
Note: When shunt relay is connected, this is the shunt test value.
Flow rate (option)
This register holds the flow rate. The flow rate should not be read alone because
the status and error codes are stored in other registers. The flow rate is only valid
when the register ‘Instrument error’ equals 00.
A good choice is to read at least the registers 40009 – 40020 (integer)
or the registers 40214 – 40225 (45214 – 45225) (float).
Analogue output value 1, 2
These registers holds the values sent to the analogue outputs. The registers can be
used for fault finding in the system.
Note: The value is rounded to two decimals.
Input signal (mV/V)
This register holds the current input signal in mV/V. This register could be used for fault
finding in the system.
When shunt relay is connected, the mV/V change is placed here.
Command register
As this register is read, the answer will always contain only zero's.
There are a number of actions that can be activated in the TAD 3. The value of this
register (when different from zero) will activate one of these actions, as described in
‘Command description’ on next page.
When an action can not be performed for some reason (wrong state etc.) an exception
is given as reply. When an exception with code 03 or 07 is received the command error
register could be read to get a better error explanation.
6-9
Technical Manual
Command description
Cmd Action activated in TAD 3
Description
0
No action
1
Activate setpoint 1
See description of setpoint function.
2
Deactivate setpoint 1
See description of setpoint function.
3
Activate setpoint 2
See description of setpoint function.
4
Deactivate setpoint 2
See description of setpoint function.
5
Activate setpoint 1 and 2
See description of setpoint function.
6
Deactivate setpoint 1 and 2
See description of setpoint function.
7
Auto tare
8
Set to zero
9
Select gross mode
10
Select net mode
11
Select normal weight
Disconnect shunt resistor.
12
Select calibration value
Connect shunt resistor.
13
Weight display
Show weight on the display.
14
Flow rate display
Show flow rate on the display (option).
16
Start operation
When the TAD 3 is in ‘Wait for start state’,
this command can be used to start up the
instrument.
17
Enter Remote operation
This command disables the keys on the
TAD 3 unit. This means that an external
computer is controlling the instrument.
This command is only valid when TAD 3 is
displaying weight or a Batching screen
(batching running, halted or ready).
18
Exit Remote operation
This command enables the keys and leaves
the remote operation.
19
Print command
This command initiates a printout on a possible
connected computer.
50
60
Batching commands
See section 7. Batching (program option).
Continued on next page.
6-10
Used to set the gross weight to zero.
Weight Indicator TAD 3
Command description. (continued)
100
* Enter Remote Set-up
This command is used to be able to change
the set-up of the TAD 3 from remote.
101
* Enter Remote Restore
This command is used to be able to restore a
saved set-up to the TAD 3 from remote.
102
* Exit Remote Set-up/
Restore and save changes
This is used when the parameters are changed
from remote and should be saved in the TAD 3.
103
* Exit Set-up without saving
changes
This can be used to discard edits made to the
set-up parameters, before the set-up is left.
104
* Do Reset
This command is used to reset
the instrument from remote location.
105
Check set-up data
This command checks that the set-up is correct.
* WARNING! This command will interrupt the normal weighing function.
Setpoint 1, setpoint 2
The registers are used to read and write setpoints. See description of setpoint function.
Additional input status
Bits set to 1 in this register have the following meaning:
Bit no Function
Bit no
Function
0
Digital input 11 activated.
8
Digital input 21 activated.
1
Digital input 12 activated.
9
Digital input 22 activated.
2
Digital input 13 activated.
10
Digital input 23 activated.
3
Digital input 14 activated.
11
Digital input 24 activated.
4
Digital input 15 activated.
12
Digital input 25 activated.
5
Digital input 16 activated.
13
Digital input 26 activated.
6
Digital input 17 activated.
14
Digital input 27 activated.
7
Digital input 18 activated.
15
Digital input 28 activated.
Note: If this register (bits) is read as float value, see description
of Data representation.
6-11
Technical Manual
Additional output status
Bits set to 1 in this register have the following meaning:
Bit no
Function
Bit no
Function
0
Digital output 11 activated.
8
Digital output 21 activated.
1
Digital output 12 activated.
9
Digital output 22 activated.
2
Digital output 13 activated.
10
Digital output 23 activated.
3
Digital output 14 activated.
11
Digital output 24 activated.
4
Digital output 15 activated.
12
Digital output 25 activated.
5
Digital output 16 activated.
13
Digital output 26 activated.
6
Digital output 17 activated.
14
Digital output 27 activated.
7
Digital output 18 activated.
15
Digital output 28 activated
Note: If this register (bits) is read as float value, see description
of Data representation.
Level status
Bits set to 1 in this register have the following meaning:
Bit no
Function
Comment
0
Above level 1
The weight is above Level 1.
1
Above level 2
The weight is above Level 2.
2
Above level 3
The weight is above Level 3.
3
Above level 4
The weight is above Level 4.
4
Above level 5
The weight is above Level 5.
5
Above level 6
The weight is above Level 6.
6
Above level 7
The weight is above Level 7.
7
Above level 8
The weight is above Level 8.
Note: If this register (bits) is read as float value, see description
of Data representation.
Clock
These registers are used to read and write the time and date in TAD 3.
Level 1 ... Level 8
These registers are used to read and write levels that are supervised by TAD 3.
Preset tare
This register is used to read and write a new preset tare.
Setpoint 1, setpoint 2
The registers are used to read and write setpoints. See description of setpoint function.
6-12
Weight Indicator TAD 3
Set-up register description
Note: Normally the Windows programme deltaCOM, supplied by
Nobel Weighing Systems, is used to edit parameters using a remote
computer, and therefore this information is only useful if you are
writing your own set-up program.
Data type:
Float
(2 reg./value)
Data type:
Modicon float
(2 reg./value)
Description
R/W
40368
45368
Not stored calibration points during deadweight calibration. Bit 0 indicates point 1
not stored, bit 1 point 2 and so on...
R
40370
45370
Program options enabled
Bit 0 - Batching, Bit 1 - Flow rate,
Bit 2 - Option 3 ..... Bit 8 - Option 9.
R
40372
45372
Location of first batching parameter
register. If ‘Modicon float’ is used, add
5000 to this value.
R
40374
45374
Number of batching parameters.
R
40376
45376
Location of first string set-up register.
All strings occupies 6 Modbus registers.
R
40378
45378
Number of string set-ups.
R
40380
45380
R
Location of first normal set-up register.
(normally 41000). If ‘Modicon float’ is used,
add 5000 to this value.
40382
45382
Number of normal set-ups.
R
40384
45384
Location of first application programme
specific set-up register. If ‘Modicon float’ is
used, add 5000 to this value.
R
40386
45386
Number of application specific set-ups
(normally 0).
R
40394
45394
Set-up version.
R
40396
45396
Set-up data version.
R
41000 – 41399
46000 – 46399 Set-up registers.
Registers containing the set-up
parameters. See section 3 and 8.
R/W *
41400 - 41799
46400 - 46799
R/W
Batching parameter registers.
Registers containing the batching
parameters. See section 7.
* Only possible to write in ‘Remote set-up’ state!
6-13
Technical Manual
Data type:
Strings
Description
44600 - 44690 String set-ups (12 characters / 6 registers each).
R/W
R/W
How to edit set-up registers
Example: Change resolution to 0.2.
• Start by setting coil 100 (or command 100) ‘Enter Remote Set-up’.
• Locate the resolution parameter in section 3. This gives modbus register 41030.
• Set resolution ‘0.2’ by sending ‘7’ to modbus register 41030.
• Proceed with changes of all the parameters that are to be changed.
• Finish by setting coil 102 (or command 102) ‘Exit Remote Set-up/Restore
and save changes’.
TAD 3 makes a reset and the changes goes in action.
See section 3 and other parts describing the set-up for more information.
I/O bits (Coils)
TAD 3 has a number of I/O bits that the master can write to using
Modbus function 05 or 15.
Each of these I/O bits are linked to a command in TAD 3, which is described
previously in this manual.
Set the I/O bit with the same number as the command that should be executed.
The action is activated if the master sets the I/O bit to 'ON'.
If the master sets the I/O bit to 'OFF', this is accepted, but no action is activated.
All I/O bits are WRITE ONLY. This means the master cannot read the I/O bits
but only write to them.
Note: If the master tries to write to more than one I/O bit (Modbus function 15)
the TAD 3 will act on the lowest I/O bit number only.
6-14
Weight Indicator TAD 3
Data representation
Data sent to and from the TAD 3 uses 16 bit holding registers (40XXX) and can use
different formats for flexibility.
Integer
Unsigned integer (1 modbus register)
Values stored in one modbus register as an unsigned integer
(16 bit number without decimals).
Scaled integer (2 modbus registers + 1 modbus register = 3 modbus registers)
Values stored in a special 3 register format. The first two registers are used as
a 32 bit long integer value (with sign) and the third register is holding the number of
decimals in the value.
Example: 12345678 (32 bit number) in the two first registers and 3 in the third register
gives the value: 12345.678.
Register
Hex
Decimal
Description
1
00BC
188
The 16 most significant bits in the value.
2
614E
24910
The 16 least significant bits in the value.
3
0003
3
The number of decimals.
Calculations in decimal numbers:
First multiply the most significant register with 216 (65536) and add
the least significant register to the value.
188 * 216 + 24910 = 12345678
Now divide the number to get the right number of decimals. The decimal register was
set to 3 in this example, which gives the value 103 = 1000 to divide with.
12345678 / 1000 = 12345.678
Note: If your PLC system can’t handle 32 bit values, the second register can be used
as a 16 bit register with the number of decimals that is indicated in the third register.
This will limit the value range to -32768 to +32767. This must be regarded in the
calibration of the instrument. Flags in Status register 1 indicates when the weights are
bigger than a 16 bit integer. These flags can be checked to be sure that the weight fits
in just one register.
6-15
Technical Manual
Float, Modicon float
Values stored as standard IEEE 32 bit float values. Each value has two registers
assigned to it. To read/write a float value an even number of Modbus registers, starting
at an even address, must be read/written each time.
The float values are stored in two different register orders. Some devices may transfer
the values with the high order bits in the first register and the low order bits in the
second register. Other devices may invert the register order.
Modicon float: For true Modicon PLC’s, use these registers.
Float:
Many third party controllers that support Modicon protocol use the float
format where all bytes are written out in order to one 32 bit register, as
opposed to Modicon float which uses 2 consecutive 16 bit registers.
Use these registers for these types of controllers.
When float registers representing bits are read, the bits set are returned as a float value.
For example if bit 4 is set the value 16.0 is returned as a float value, and if
both bit 0 and bit 4 are set the value 17.0 is returned as a float value.
To use the value it’s a good choice to convert it to an unsigned integer where
the bits can be compared.
Strings
Each modbus register holds two 8 bit ASCII characters.
Each string consists of 12 characters.
Writing strings:
• Must start writing on a valid string start address.
• All data in the string (1 - 6 registers) must be written in one command.
• Unused characters up to position 12 will automatically be filled with spaces.
Reading strings:
• Start reading at any position in the string.
• No null character is added at the end.
• Not used characters are returned as spaces.
Example: Instrument name (NOBEL ): 44696
Register
Hex
44696
4E 4F
20047
NO
44697
42 45
16965
BE
44698
4C 20
19488
L
6-16
Decimal Description
Weight Indicator TAD 3
Exception responses
When the master sends a query to a slave it expects a normal response
(as described earlier). One of the following three events occur after a query
from the master.
1. Normal response.
The slave has received the query without communication error and can handle
the query normally. The slave returns a normal response.
2. Communication error.
If the slave does not receive the query due to a communication error, or detects
some communication error (parity error or checksum error), no response is returned.
The master should process a time-out for the query.
3. Command error.
If the slave receives the query without any communication error, but cannot handle
the query, e.g. if the command was not valid, the requested register number not valid
or TAD 3 in a mode where the command was not allowed, then the slave will return
an exception response informing the master of the nature of the error.
The following exception codes are possible.
Code Name
Description
01
Illegal function
Not a valid function code. Valid function codes are
01, 02, 03, 05, 06, 08, 15, 16.
02
Illegal data address
Not a valid data address. See ‘Register description’
for a list of allowed registers.
03
Illegal data value
Value in data query field not valid. To get a better
explanation of the error, the ‘command error’ register
could be read.
07
Negative
acknowledgement
TAD 3 has received the query but cannot perform it.
To get a better explanation of the error,
the ‘command error’ register could be read.
6-17
Technical Manual
Supported Modbus functions
Function
Description
01
Reads the state of discrete outputs (0X references, coils).
Only implemented because some 'masters' use this function to initiate
communication.
Read Coil Status
Coil range: 1 – 16 (Max number of points to read: 16).
Response: Zero (OFF) for all requested points.
02
Read Input Status
Reads the state of discrete inputs (1X references).
This function is implemented only because some 'masters' use
this function to initiate communication.
Input range: 1 – 16 (Max number of points to read: 16).
Response: Zero (OFF) for all requested points.
03
Reads the binary contents of holding registers (4X references).
Read Holding Reg.
Max number of registers to read: 100
05
Forces a single coil (0X references) to either ON or OFF.
Force Single Coil
This function is used to activate commands in TAD 3.
06
Presets a value into a single holding register (4X references).
Preset Single Reg.
08
Diagnostics
This function can provide a series of different communication tests,
depending on a sub function code. TAD 3 supports only sub function
code 00, which is a 'loop-back' test. The same data as received will
be sent back to the master.
Max number of data bytes: 64
15
Force Multiple Coils
Forces each coil (0X references) in a sequence of coils to either
ON or OFF. This function is used to activate commands in TAD 3.
Max. number of points: 16 (only the first is used).
16
Presets values into a sequence of holding registers (4X references).
Preset Multiple reg.
Max number of registers to preset: 100
Note: No broadcast messages are allowed.
It is possible to send or fetch any number of registers (max 100) or I/O bits (max. 16).
If the master tries to read more registers than there are available, the TAD 3 module
will send dummy values for those registers not available.
6-18
Weight Indicator TAD 3
External display
General
The transmitted value is adapted for Newport/London external displays with
4, 5, 6 or 7 digits and the Intrinsic safety indicator MTL 643 with 32 characters.
Setup of external display
COMx: Mode:
Ext. display.
COMx:Baudrate:
As selected on external display.
COMx:Data format:
As selected on external display.
Ext. disp.mode:
The wanted presentation on the external display.
(Gross weight, Net weight, Displayed weight or Flow rate.)
Ext. disp.format:
Depending on type of external display as described
in the following tables.
Type
Description
4 (digits)
Four digit indicator. Display: -999 – 9999 (plus decimal point).
5 (digits)
Five digit indicator. Display: -9999 – 99999 (plus decimal point).
6 (digits)
Six digit indicator. Display: -99999 – 999999 (plus decimal point).
Possible gross/net indicators will be activated.
7 (digits)
Seven digit indicator. Display: -999999 – 9999999 (plus decimal point).
32 (char.)
MTL 643 indicator. Display: -999999 – 9999999 (plus decimal point).
External display with 4 to 7 digits
The external display normally shows the current weight/flow, but under the following
conditions only ‘dashes’ (-----) are displayed:
• the number of digits in the transmitted weight/flow value is outside
the display range.
• the instrument is not in normal state or there is a weight error.
Definition of weight/flow value to external display with 4, 5, 7 digits:
Character
No.
Value
alphanumeric.
1
2 to 5 – 9
Last
0 – 9, . , -
Value
Hex
Function
02
Start character (STX).
30 –
39,2E,2D
*/ Weight/flow value: 4, 5 or 7 digits and
a possible decimal point.
(The first digit may be a minus sign).
0D
End character (CR).
6-19
Technical Manual
Definition of weight/flow value to external display with 6 digits:
Character
No.
Value
alphanumeric.
1
Value
Hex
Function
02
Start character (STX).
2
H, M, blank
48, 4D, 20
This character is present only if 6 digits
is selected in 'Ext. disp.format’.
H = gross weight is transmitted.
M = net weight is transmitted.
blank = flow, or
no valid weight is transmitted.
3 to 8 or 9
0 – 9, . , -
30 –
39,2E,2D
*/ Weight/flow value: 6 digits and
a possible decimal point.
(The first digit may be a minus sign).
0D
End character (CR).
Last
Note: */ The number of digits in the value (including a minus sign, if present)
will equal the number of digits selected in 'Ext. disp.format’.
Leading zeros will be added to fill up to the selected number of digits.
The decimal point does not occupy any digit position.
External display MTL 643
This external display can handle both digits and characters and has therefore some
special extra features. The value is always shown with the chosen unit and when there
is an error, the display indicates ‘error’ instead of just ‘----’. The error message
is shown when there is an internal error in the TAD 3 or the number of digits in
the transmitted value is outside the indicators range.
A time-out is set to 10 seconds in the MTL 643, which means that if there is a
communication error etc. ‘TIMEOUT’ will flash on the MTL 643 when the time-out
has passed.
Example of the weight shown on MTL 643.
1123.43 kg
Net
Motion
‘Gross’ and ‘Net’ will replace each other.
‘Motion’ and ‘Good zero’ will replace each other.
When a flow value is shown, these texts are replaced by ‘Flow rate‘.
Button 1 on MTL is dedicated to: TARE
Button 2 on MTL is dedicated to: G/N
Button 3 on MTL is dedicated to: PRINT
6-20
Weight Indicator TAD 3
Printing
The print function is designed to work best with a 40 characters printer.
Printout types
The following types of printout can be obtained:
• Printout of displayed weight (flow rate).
• Printout of accumulated weight.
• Printout of preset tare.
• Printout of level and setpoint values.
• Printout of set-up list.
• Batch printouts.
Setup of printer
COMx: Mode: Printer or Printer 850
Printer:
ASCII characters (1-127 dec.). with international character codes
described in the table below.
Printer 850:
Multilingual character set known as Code Page 850 (1-255 dec.)
Printers are using different character codes for the international characters
found in the Swedish, German and French language. Depending on if ‘Printer’ or
‘Printer 850’ is chosen and depending on the chosen language in the instrument,
different character codes are used.
When ‘Printer’ is chosen, the printer should be set to the same language as
the language used in TAD 3 if possible.
Table showing character codes used for different settings of ‘COMX Mode’ and
‘Language’ in TAD 3.
All numbers stated in decimal representation
Character
in TAD 3
Mode:
Printer
Mode:
Printer
Mode:
Printer
Mode:
Printer 850
Language:
Sve./Eng./Suo.
Language:
Deut./Ned.
Language:
Fra./Esp.
å
125 (})
97 (a)
97 (a)
134
ä
123 ({)
123 ({)
97 (a)
132
ö
124 (|)
124 (|)
111 (o)
148
ü
126 (~)
125 (})
117 (u)
129
Å
93 (])
65 (A)
65 (A)
143
Ä
91 ([)
91 ([)
65 (A)
142
Ö
92 (\)
92 (\)
79 (O)
153
Ü
85 (U)
93 (])
85 (U)
154
(continued)
6-21
Technical Manual
(continued)
Character
in TAD 3
Mode:
Printer
Mode:
Printer
Mode:
Printer
Mode:
Printer 850
Language:
Sve./Eng./Suo.
Language:
Deut./Ned.
Language:
Fra./Esp.
ô
111 (o)
111 (o)
111 (o)
147
ç
99 (c)
99 (c)
92 (\)
135
Ç
99 (c)
99 (c)
92 (\)
128
à
97 (a)
97 (a)
97 (a)
133
è
101 (e)
101 (e)
125 (})
138
é
96 (`)
101 (e)
123 ({)
130
ê
101 (e)
101 (e)
96 (`)
136
ß
115 (s)
126 (~)
115 (s)
225
COMx:Baudrate:
As selected on the printer.
COMx:Data format:
As selected on the printer.
Printer pos 1 – 4:
For flexibility it’s possible to select the use of four
different printer fields with the size of 20 characters each. The
fields can be either: ‘Not in use’ , ‘Disp.weight’, ‘Date/Time’,
‘Instr.name’ or ‘Preset tare’. This layout is only used when the
displayed weight is printed, using
the ‘PRINT’ button.
Printer pos.1
Printer pos.2
Printer pos.3
Printer pos.4
The layout of the printer fields.
If both positions on a row are set to ‘Not in use’
that row is omitted.
Printer linefeed:
6-22
After each printout of displayed weight, ordered with
the ‘PRINT’ button, the amount of linefeeds defined
in this parameter is added.
Weight Indicator TAD 3
Print examples
Printout of displayed weight/flow rate (Print button pressed)
Printer pos.1 = Date/Time
Printer pos.3 = Not in use
Printer linefeed = 0
2002-12-02 02:45
2002-12-02 02:46
2002-12-02 02:47
Ice
N
Ice
G
Ice
Printer pos.2 = Instr. name
Printer pos.4 = Disp. weight
Instrument name = Ice cream
cream
078.3 kg
cream
088.7 kg
cream
286.0 kg/min
(net weight is displayed)
(gross weight is displayed)
(flow rate is displayed)
Printout of accumulated weight
- - - - - - - - - - 2002-12-02 02:49
Accumulated weight
Printed
....
- - - - - - - - - - -
- - - - - - - - Ice cream
90.3 kg
- - - - - - - - -.
Printout of preset tare
- - - - - - - - - - - - - - - - - - - 2002-12-02 02:49
Ice cream
Preset tare
23.0
kg
- - - - - - - - - - - - - - - - - - - -
Printout of used levels and setpoints
- - - - - - - - - - - - - - - - - - - 2002-12-02 02:49
Ice cream
Level 1
100.0 kg
Level 2
150.0 kg
Level 3
168.0 kg
Setpoint 1
198.5 kg
- - - - - - - - - - - - - - - - - - - -
Printout of set-up list
- - - - - - - - - - - - - - - - - - - 2002-12-02 02:47
Ice cream
TAD 3 (T002A240)
12-2183
Language
Start mode
Display info
Display contrast
Backlight
Date format
Gross/Net key
Tare key
Print key
Zero key
.....
English
Auto
Date/Time
4
5
YYYY-MM-DD
On
On
On
On
6-23
Technical Manual
Printout of BATCH DATA
- - - - - - - - - - - - - - - - - - - 2002-12-02 10:09
Icecream
Batching
Num. of batches
2
Batch size
100
%
A1:Cream
60.0
kg
A2:Stirrer
3.0
s
A3:Vanilla
20.0
kg
- - - - - - - - - - - - - - - - - - -
Printout of FULL REPORT
- - - - - - - - - - - - - - - - - - - 2002-12-02 10:10
Icecream
Batching report
Num. of batches
2
Batch size
100
%
- - - - BATCH NUMBER: 000001 - - 10:10 A1:** SETPOINT ALARM **
10:10 A1:RESTART
10:10 A1:Cream
SP:
60.0 kg W:
60.5 kg
10:10 A2:Stirrer
SP:
3.0 s
Timer finished
10:11 A3: Vanilla
SP:
20.0 kg W:
21.0 kg
10:11 SUBTOTAL: 81.500 kg
- - - - BATCH NUMBER: 000002 - - 10:11 A1:Cream
SP:
60.0 kg W:
61.0 kg
10:11 A2:Stirrer
SP:
3.0 s
Timer finished
10:11 A3:HALTED
10:11 A3:RESTART
10:12 A3:Vanilla
SP:
20.0 kg W:
20.0 kg
10:12 SUBTOTAL: 81.000 kg
10:12 BATCHING FINISHED
- - - - - - - - - - - - - - - - -
Printout of ONLY ALARMS REPORT
- - - - - - - - - - - - - - - - - - - 2002-12-02 Icecream
BATCH:000001
10:10 A1:** SETPOINT ALARM **
- - - - - - - - - - - - - - - - - - -
6-24
Printout of LIMITED REPORT
- - - - - - - - - - - - - - - - - - - 2002-12-02 10:10
Icecream
Batching report
Num. of batches
2
Batch size
100
%
- - - - BATCH NUMBER: 000001 - - 10:10 A1:** SETPOINT ALARM **
10:10 A1:Cream
SP:
60.0 kg W:
60.5 kg
10:11 A3: Vanilla
SP:
20.0 kg W:
21.0 kg
10:11 SUBTOTAL: 81.500 kg
- - - - BATCH NUMBER: 000002 - - 10:11 A1:Cream
SP:
60.0 kg W:
61.0 kg
10:12 A3:Vanilla
SP:
20.0 kg W:
20.0 kg
10:12 SUBTOTAL: 81.000 kg
10:12 BATCHING FINISHED
- - - - - - - - - - - - - - - - -
Weight Indicator TAD 3
7. Batching (program option)
Contents: Batching principles
Activity descriptions
Batching parameters
Operation
Batching alarms
Serial communication
page 7-1
page 7-4
page 7-11
page 7-25
page 7-29
page 7-30
General
From programme name T001A120, the Weight Indicator TAD 3 includes a program
option for ‘Batching’. The option can be activated by an individual code for each
instrument. The code can be ordered from Nobel Weighing Systems and should be
entered in menu ‘Program options’ in ‘Edit set-up’ under the instrument Main menu.
See page 3-34 in this manual for instructions.
By batching, more digital inputs and outputs may be needed. Connection of one
or two additional units DIO 3 will give maximum 18 digital inputs and 18 digital outputs
for the instrument TAD 3. See section 9.
Front panel
When ‘Batching’ is activated, the text ‘BATCH’ is displayed by normal operation,
at the function key to the left.
Two front panel keys get specific batching functions:
the key - (minus, with a green start symbol) will get the start batch function,
the key . (point, with a red stop symbol) will get the stop batch function.
Batching principles
Batching with TAD 3 means performing up to six activities in numerical order as
one sequence. The batching sequence can be repeated a defined number of
times. As batching is performed, the instrument function is supervised and possible
alarms will be given. Printing of alarms and batched weights can be performed on
a connected printer.
During batching sequences, the signals ‘B.inprogress’ (batching in progress),
‘B. stopped’ (batching stopped), and ‘Batch. alarm’ (batching alarm) will be
indicated on digital outputs from TAD 3, according to the configuration in
menu ‘Edit set-up’ / ‘Outputs’.
Output ‘B.inprogress’ will be active during the entire batching.
7-1
Technical Manual
Batching activities
The following types of activities are available for the batching sequence:
Weigh in
used to batch a component into the weighed vessel (batch in).
Weigh out
used to batch from a previously filled, weighed vessel (batch out).
Displayed weight during Weigh out is always negative.
Dump
used to empty a vessel into which components have been batched.
Fill
used to fill up a vessel to a certain level.
Timer
used to pause the batching sequence for a defined time.
Timer w.outp
used to activate an output for a defined time.
Latch on
used to make an output signal.
Latch off
used to break an output signal.
Manual
used to halt the batching, making it possible to manually add
special material. Then batching must be manually restarted.
Pulse batch
used for batching with the aid of pulses from a flow meter.
Setpoint values
The activity types Weigh in, Weigh out, Timer, Timer w.outp, Manual, and
Pulse batch require Setpoint values.
All Setpoint values can be shown and edited in menu ‘Batching’ under
the instrument Main menu.
Weigh in and
Weigh out
The Setpoint value determines the component quantity,
expressed in the measurement unit.
Timer and
Timer w.outp
The Setpoint value determines the duration of the activity,
expressed in seconds with max. one decimal.
The range is 0.0 to 999999.0 seconds.
Manual
The Setpoint value normally determines a small component
quantity to be added manually.
Pulse batch
The Setpoint value determines the component quantity,
expressed in the pulse batching unit.
The activity types Dump, Fill, Latch on and Latch off
do not require Setpoint values.
7-2
Weight Indicator TAD 3
Figure 16. Principles how batching is carried out. The batching
sequence can include up to six activities.
7-3
Technical Manual
Activity description
Weigh in
When a Weigh in activity is started, the Setpoint value is checked to determine if
the receiving container has sufficient capacity for the set quantity of material.
The implication of this Setpoint check is that actual Gross weight + Setpoint value
must be less than Capacity for the scale.
If the remaining scale capacity is not sufficient an alarm message will be displayed and
printed, the batching sequence will be halted and all batching outputs broken. When
the alarm cause has been cured the alarm can be reset and the batching restarted.
When the Setpoint value has been checked and accepted, the acknowledgement input
signal is checked (not if Ack.type is No test).
An unsatisfactory signal will initiate an alarm (if Ack.type is At start or Continuous),
and if Ack.type is Wait or Wait+contin. the instrument will wait (without alarm) until
the acknowledgement input signal is received.
When the acknowledgement signal is correct the batching sequence continues.
The instrument waits for the weight to become stable before Auto taring is performed (if
Motion check is On). Alarm is never initiated by an unstable weight in conjunction
with start of batching. After the instrument is tared it switches to net weight and
displays zero weight.
If Batching mode is Fine+Coarse the Coarse output (and also the Fine output
if F.on during C. is Yes) is now activated. The instrument shows increasing weight.
When the weight reaches ‘coarse level’ the Coarse output is deactivated
(‘coarse level’ = Setpoint – Fine value – Inflight value).
The Fine output (or if Batching mode is One phase, the output defined in parameter
Output no) is then activated (if not activated earlier).
When the increasing weight reaches ‘inflight level’ the output is deactivated
(‘inflight level’ = Setpoint – Inflight value). The Inflight value is adjusted
automatically after each batching if the activity parameter Inflight factor is
set to a value higher than zero.
The instrument waits equivalent to Wait time, a time that must be set so that all
material is really stable on the scale before the waiting time has expired.
The following operations are also performed:
Stability and tolerance check.
Printout of batched weight.
Adding of batched weight to the accumulated weight register.
Figure 17. Flow chart for batching step ”Batching coarse”.
7-4
Weight Indicator TAD 3
The total batching time for the activity is monitored and if the time exceeds the set
Timeout value, an alarm will be initiated. Timeout count will start when the
acknowledgement signal is received and stop during possible batching halts.
Timeout count starts all over again when a Timeout alarm has been reset and
batching has been restarted.
Stability and tolerance check
After the complete batching of a Weigh in (or Weigh out) activity (and Wait time),
a stability check is performed if Motion check is On (stability check is never
performed for a Pulse batching activity).
Unstable weight initiates an alarm. A second weight stability check is performed at
restart, implying that the weight MUST be stable for the instrument to continue the
batching sequence. If stable weight cannot be obtained, batching must be reset or
the ongoing activity skipped.
The batched weight is always checked against the set tolerance limits.
One parameter defines the Minus tolerance (weight below the Setpoint value) and
the other defines the Plus tolerance (weight above the Setpoint value).
The tolerance setting range is 0.00 - 100.00 %.
100.00 % means that tolerance check is not performed (all weights are approved).
5.00 % means that the batched weight is permitted to deviate from the Setpoint value
by 5 % thereof.
Figure 18. Flow chart for batching steps ”Batching fine”
and ”Batching one phase”.
7-5
Technical Manual
If the weight is below the Minus tolerance limit, and a Pulsing time other
than zero is selected, the fine output will be activated again for the time defined
by the parameter Pulsing time. After the Wait time a renewed tolerance check
will be performed.
If the weight value is still below the Minus tolerance limit, pulsing of the fine output
will be performed repeatedly until the weight value is above the Minus tolerance
limit. Selection of a Pulsing time other than zero makes it possible to ensure that
the obtained batch weights will never be below the Minus tolerance limit.
If Pulsing time is zero and the weight value is below the Minus tolerance limit,
batching will recommence in the fine phase if the remaining weight up to the Setpoint
value is greater than the Inflight value.
In other cases an alarm will be obtained. An alarm is always obtained if the weight
value exceeds the Plus tolerance limit.
The operator can bypass these tolerance alarms by resetting the alarm and restarting
the batching sequence. Either the erroneous weight can be accepted or other manual
adjustments can be made before batching is restarted. When restarting after a
tolerance alarm a second tolerance check will not be performed but the actual weight
will be used for accumulation and printing.
Figure 19. Automatic adjustment of Inflight value.
7-6
Weight Indicator TAD 3
Automatic inflight compensation
Automatic inflight compensation is operative when the Inflight factor has
a value higher than zero. It is used to adjust the Inflight value after each activity
to bring the batched weight value as close to the Setpoint as possible.
Automatic inflight compensation for any activity is performed by:
New Inflight value = preceding Inflight value +
(batched weight - Setpoint value) x Inflight factor.
The range of the Inflight factor is 0 - 100 % (0 % means no compensation).
A 50 % Inflight factor adjusts the Inflight value by 50 % of the difference
between batched weight and Setpoint value.
Figure 18 shows where in the sequence the Inflight value is calculated.
(Note that the calculation is performed prior to possible pulsing).
Figure 19 describes the Inflight value adjustment. Usually, the difference between
batched weight and Setpoint value is the starting point for the changes.
The difference between batched weight and Setpoint value is limited to the largest
value of Setpoint value × Plus tolerance or Setpoint value × Minus tolerance.
This limitation ensures that the correction (for example, by a possible tolerance error)
will not be completely unreasonable. The correction of the Inflight value is always
limited to 10 % of the Setpoint value.
Weigh out
Weigh out is very similar to Weigh in, but batching is done from an already filled
vessel. The only difference being that the Setpoint value is checked to determine that
a sufficient material quantity is available in the container. The requirement
is for the gross weight to be larger than the Setpoint value + 20 × Resolution.
If this requirement is not satisfied an alarm is initiated.
The weight display during this type of batching is always negative.
Pulse batching
The Pulse batching activity is very similar to the activities Weigh in and Weigh out, but
the Pulse batching activity does not use the measured weight value for the batching.
Instead it counts pulses (normally from a flow meter) that are scaled to a weight,
volume or any other unit. Another difference is that there are no stability and setpoint
checks included in the Pulse batching sequence.
There are four more parameters in this activity, defining the input for pulses
(Pulse input no), the number of decimals for pulse batching (No of decimals),
the pulse batching unit (Unit), and the number of pulses/unit (Scale factor).
NOTE! For a pulse batching activity the weight in this manual should be read as
‘No of counted pulses × Scale factor’.
7-7
Technical Manual
Dump
Only emptying of the vessel into which the components have been batched is
performed by this activity.
The acknowledgement signal will be checked (except when Ack.type is No test).
An unsatisfactory signal will initiate an alarm (if Ack.type is At start or
Continuous). And if Ack.test is Wait or Wait+contin., the instrument waits
(without alarm) until the acknowledgement signal is received. Whenever an alarm has
been obtained Reset alarm and Restart are required. When the acknowledgement
signal is correct the instrument switches to display of gross weight.
The dump output (defined in parameter Output no) is activated. When the gross
weight has come down to the Low level a timer is started. This is a low-weight value
which is used to obtain a detectable weight value close to zero.
After a time equivalent to Wait time, the dump output is deactivated.
Wait time must be selected long enough to allow all material left at the dump low
level to leave the vessel during this time.
The total dumping time is monitored and if it exceeds the set Timeout value,
an alarm will be obtained. Timeout count will start when the acknowledgement signal is
received and stop during possible batching halts.
Timeout count starts all over again if a Timeout alarm has been reset and dumping has
been restarted.
Fill
This activity type is used to fill a vessel with material.
The acknowledgement signal will be checked (except when Ack.type is No test).
An unsatisfactory signal will initiate an alarm (if Ack.type is At start or
Continuous). And if Ack.test is Wait or Wait+contin., the instrument waits
(without alarm) until the signal is received. Whenever an alarm has been obtained
Reset alarm and Restart are required. When the acknowledgement signal is correct the
gross weight is checked.
Figure 20. Flow charts for the Dump and Fill activities.
7-8
Weight Indicator TAD 3
If the gross weight is below Low level the instrument switches to display of gross
weight and activates the Fill output (defined in parameter Output no), else nothing
more is done in the activity.
When the gross weight has come up to the High level the output is deactivated.
The instrument waits equivalent to Wait time. It must be set so that all material is
really on the scale before the waiting time has expired.
The total filling time is monitored and if the time exceeds the set Timeout value
an alarm will be obtained. Timeout count will start when the acknowledgement signal
is received and stop during possible batching halts.
Timeout count starts all over again if a Timeout alarm has been reset and filling has
been restarted.
Timer and Timer with output
Timer activities are used to switch on an output signal for the set time or to give a
‘pause’ (without any output signal).
The acknowledgement signal will be checked (except when Ack.type is No test).
An unsatisfactory signal will initiate an alarm (if Ack.type is At start or
Continuous). And if Ack.test is Wait or Wait+contin., the instrument waits
(without alarm) until the acknowledgement input signal is received. Whenever an alarm
has been obtained Reset alarm and Restart are required.
When the acknowledgement signal is correct the Timer output (defined in parameter
Output no) is activated if Activity type is Timer w. outp.
The instrument counts down the time corresponding to Setpoint value (the count-down
can be watched on the display). If batching is restarted after a temporary halt (due to,
for example, an alarm) the time count starts from where it was stopped.
When the time has expired the output is deactivated (if it was active).
Latch on
Latch on activities are used to switch on an output signal.
The acknowledgement signal will be checked (except when Ack.type is No test).
An unsatisfactory signal will initiate an alarm (if Ack.type is At start or
Continuous). And if Ack.test is Wait or Wait+contin., the instrument waits
(without alarm) until the signal is received. Whenever an alarm has been obtained
Reset alarm and Restart are required.
Figure 21. Flow charts for activities Timer and Timer with output.
7-9
Technical Manual
When the acknowledgement signal is correct the output is activated.
The On during halt parameter determines if the output should be switched off or not
during temporary halts.
Latch off
Latch off activities are used to switch off an output signal.
The acknowledgement signal will be checked (except when Ack.type is No test).
An unsatisfactory signal will initiate an alarm (if Ack.type is At start or
Continuous). And if Ack.test is Wait or Wait+contin., the instrument waits
(without alarm) until the signal is received. Whenever an alarm has been obtained reset
alarm and restart are required.
When the acknowledgement signal is correct the output is deactivated.
Manual
Activity Manual halts the batching to allow special operations which must be carried out
manually. (For example, to add small quantities of material manually.) Before batching is
halted autotaring is performed, which means that the net weight zero is displayed when
the manual operation starts.
Batching must be manually restarted by the RESTART function key.
If Print weight is Yes then the weight value (weighed by the scale or entered
manually) will be added to the accumulating registers and printed.
Parameter Enter weight defines whether the operator shall have the opportunity to
enter the weight value for the added material manually, or not.
If parameter Enter weight is Yes but the operator does not enter a weight value
manually, then the weight value from the scale will be used.
Figure 22. Flow chart for activity Manual.
7-10
Weight Indicator TAD 3
Batching parameters
Changing and storing
Data entered to define batching parameters are stored in power safe memory.
Stored information will not be lost if the instrument is switched off.
Certain activity parameters are of a conditional type, implying that they do not
appear unless another parameter has a certain value. These conditions are given
in the explanation text for the parameters.
Parameter editing can be performed in menu ‘Batching parameters’, by front panel
keys or by serial communication. The menu is available under ”Edit set-up”, provided
normal measuring operation has been stopped.
Menu ‘Batching parameters’ is also available during normal measuring operation, in
the instrument Main menu.
Parameters marked with * can also be edited during a batching in progress.
Printout of parameters can be ordered if a printer is connected.
Printout or manual recording of all parameters is recommended after editing.
These recordings will be extremely valuable if an instrument has to be replaced.
Modbus register numbers for all parameters are given on page 7-24.
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
Menu ‘Batching parameters’
Display no of B.
[0]
No
[1]
Yes
<No>
Defines if it should be possible to select a number
of batches.
No: Not possible to select a number of batches
(always one batch).
Yes: Possible to select a number of batches.
Display B-size
No
[0]
Percent
[1]
Weight
[2]
<No>
Defines if it should be possible to select the batch size.
No: Not possible to select batch size
(always 100% batch size).
Percent: Possible to enter a batch size in percent.
Weight: Possible to enter a batch size in weight units.
Batch printouts
No
[0]
Full report
[1]
Limited rep.
[2]
Only alarms
[3]
<No>
Defines the type of batch report.
No: No batch report is printed.
Full report: Batched weights, alarms and other
information are printed.
Limited rep.: Only batched weights and alarms are
printed.
Only alarms: Only batch alarms are printed.
Batch end mode
No change
[0]
Gross
[1]
Net
[2]
<Gross>
Selection of weight display mode after finished
batching operation.
No change: No change of mode.
Gross: Sets gross mode.
Net.: Sets net mode.
7-11
Technical Manual
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
The following batching parameters are available in six sets, one for each activity in
the instrument.
Activity type
Not used
[0]
Weigh in
[1]
Weigh out
[2]
Dump
[3]
Fill
[4]
Timer
[5]
Timer w. outp
[6]
Latch on
[7]
Latch off
[8]
Manual
[9]
Pulse batch
[10]
<Not used>
Defines the type of activity.
Not used: The activity is not used.
Weigh in: Weigh in activity.
Weigh out: Weigh out activity.
Dump: Dumping activity.
Fill: Filling activity.
Timer: Timer activity.
Timer w. outp: Timer activity with output.
Latch on: Latch on activity.
Latch off: Latch off activity.
Manual: Manual activity.
Pulse batch: Pulse batching activity.
Activity name
Activity name (12 character string).
The activity name is used to identify the activity
in the instrument and on printouts.
Weighing In or Out (Activity type = Weigh in or Weigh out)
Batching mode
[0]
One phase
[1]
Fine+Coarse
< Fine+Coarse >
Defines if it is a one phase batching or
a Coarse/Fine batching.
One phase: One phase batching (only one output).
Fine+Coarse: Coarse-fine batching (two outputs used).
Output no
01
[0]
02
[1]
11
[2]
12
[3]
13
[4]
14
[5]
15
[6]
16
[7]
17
[8]
18
[9]
21
[10]
22
[11]
23
[12]
24
[13]
25
[14]
26
[15]
27
[16]
28
[17]
<01>
Defines the output used for one phase batching.
The output must be defined as B.activity
in the set-up menu ‘Outputs’.
7-12
Note: This parameter is only shown if
Batching mode is set to One phase.
Weight Indicator TAD 3
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
Coarse outp. no
01
[0]
02
[1]
11
[2]
12
[3]
13
[4]
14
[5]
15
[6]
16
[7]
17
[8]
18
[9]
21
[10]
22
[11]
23
[12]
24
[13]
25
[14]
26
[15]
27
[16]
28
[17]
<01>
Defines the output used for coarse batching.
The output must be defined as B.activity
in the set-up menu ‘Outputs’.
Fine output no
01
[0]
02
[1]
11
[2]
12
[3]
13
[4]
14
[5]
15
[6]
16
[7]
17
[8]
18
[9]
21
[10]
22
[11]
23
[12]
24
[13]
25
[14]
26
[15]
27
[16]
28
[17]
<01>
Defines the output used for fine batching.
The output must be defined as B.activity
in the set-up menu ‘Outputs’.
Note: This parameter is only shown if
Batching mode is set to Fine+Coarse.
Note: This parameter is only shown if
Batching mode is set to Fine+Coarse.
7-13
Technical Manual
[index] Range/Alternatives
<default value>
F. on during C.
[0]
No
[1]
Yes
<No>
Explanation and
result of alternatives.
Defines if the fine output shall be active
during the coarse batching phase.
Note: This parameter is only shown if
Batching mode is set to Fine+Coarse.
No: Only the coarse output is active during
the coarse batching phase.
Yes: Both coarse and fine outputs are activated
during the coarse batching phase.
Fine value *
Range: +/-999999
Unit:
Measurem. unit.
<0.0>
The amount of material batched in
the fine batching phase.
Minus tolerance *
Range:
0.00 - 100.00
Unit: %.
<100.00>
Minus tolerance value.
Note: This parameter is only shown if
Batching mode is set to Fine+Coarse.
100 % = No tolerance check.
Plus tolerance *
Range:
0.00 - 100.00
Unit: %.
<100.00>
Plus tolerance value.
Inflight factor *
Range: 0 - 100
Unit: %.
<0>
Automatic inflight compensation is performed with
this factor. The ”Inflight value” is corrected with
the resulting batching error multiplied by this factor.
Inflight value *
Range: 0 - 999999
Unit:
Measurem. unit.
<0.0>
Batching will be completed (output deactivated)
when this value remains to batch.
Wait time *
Range: 0.1 - 999.9
Unit: s.
<5.0>
Time from completed batching (outputs off)
to stability check and tolerance check.
7-14
100 % = No tolerance check.
0 = No automatic inflight compensation.
If automatic inflight compensation is used, this value is
adjusted after each batch.
Weight Indicator TAD 3
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
Pulsing time *
Range: 0.1 - 999.9
Unit: s.
<0.0>
Time for one pulse on the output Fine/Output when
the setpoint value is not reached after ordinary batching
(minus tolerance error).
Timeout value *
Range: 0 - 9999
Unit: s.
<0>
Max. allowed time for complete batching of
the component (activity).
Ack. type
No test
[0]
At start
[1]
Wait
[2]
Continuous
[3]
Wait+contin.
[4]
<No test>
Defines the type of acknowledgement control to be
used before/during batching.
No test: No acknowledgement control is performed.
At start: Acknowledgement control is performed at start
of the activity.
Wait: The instrument waits for the acknowledgement
signal before it starts the activity.
Continuous: The acknowledgement control is performed
continuously.
Wait+contin.: The instrument waits for the
acknowledgement signal before it starts the activity
and then the acknowledgement control is performed
continuously.
Ack. input no
01
[0]
02
[1]
11
[2]
12
[3]
13
[4]
14
[5]
15
[6]
16
[7]
17
[8]
18
[9]
21
[10]
22
[11]
23
[12]
24
[13]
25
[14]
26
[15]
27
[16]
28
[17]
<01>
Defines the input used for acknowledgement control.
The input must be defined as B.activity
in the set-up menu ‘Inputs’.
0 = No pulsing
0 = No timeout control.
Note: This parameter is NOT shown if
Ack.type is set to No test.
7-15
Technical Manual
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
Dumping (Activity type = Dump)
Output no
01
[0]
02
[1]
11
[2]
12
[3]
13
[4]
14
[5]
15
[6]
16
[7]
17
[8]
18
[9]
21
[10]
22
[11]
23
[12]
24
[13]
25
[14]
26
[15]
27
[16]
28
[17]
<01>
Defines the output used for dumping.
The output must be defined as B.activity
in the set-up menu ‘Outputs’.
Low level *
Range: +/-999999
Unit:
Measurem. unit.
<0.0>
The gross weight level at which ”Wait time” starts.
Wait time *
Range: 0.1 - 999.9
Unit: s.
<5.0>
Time from that ”Low level” is reached until
the (dump) output is deactivated.
Timeout value *
Range: 0 - 9999
Unit: s.
<0>
Max. allowed time for complete dumping.
Ack. type
See under ”Weighing In or Out”
Ack. input no
See under ” Weighing In or Out”
7-16
0 = No timeout control.
Weight Indicator TAD 3
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
Filling (Activity type = Fill)
Output no
01
[0]
02
[1]
11
[2]
12
[3]
13
[4]
14
[5]
15
[6]
16
[7]
17
[8]
18
[9]
21
[10]
22
[11]
23
[12]
24
[13]
25
[14]
26
[15]
27
[16]
28
[17]
<01>
Defines the output used for filling.
The output must be defined as B.activity
in the set-up menu ‘Outputs’.
Low level *
Range: +/-999999
Unit:
Measurem. unit.
<0.0>
The filling starts if the gross weight is below this
level, else no filling is performed.
High level *
Range: +/-999999
Unit:
Measurem. unit.
<0.0>
The gross weight level at which the(fill) output
is deactivated.
Wait time *
Range: 0.1 - 999.9
Unit: s.
<5.0>
Time from that ”High level” is reached until
the filling is regarded as finished.
Timeout value *
Range: 0 - 9999
Unit: s.
<0>
Max. allowed time for complete filling.
0 = No timeout control.
Ack. type
See under ” Weighing In or Out”
Ack. input no
See under ” Weighing In or Out”
7-17
Technical Manual
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
Timer or Timer with output (Activity type = Timer or Timer w. outp)
Output no
01
[0]
02
[1]
11
[2]
12
[3]
13
[4]
14
[5]
15
[6]
16
[7]
17
[8]
18
[9]
21
[10]
22
[11]
23
[12]
24
[13]
25
[14]
26
[15]
27
[16]
28
[17]
<01>
Defines the output used for the timer.
The output must be defined as B.activity
in the set-up menu ‘Outputs’.
Ack. type
See under ” Weighing In or Out”
Ack. input no
See under ” Weighing In or Out”
7-18
Note: This parameter is only shown if
Activity type is set to Timer w.outp.
Weight Indicator TAD 3
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
Latch on or Latch off (Activity type = Latch on or Latch off)
Output no
01
[0]
02
[1]
11
[2]
12
[3]
13
[4]
14
[5]
15
[6]
16
[7]
17
[8]
18
[9]
21
[10]
22
[11]
23
[12]
24
[13]
25
[14]
26
[15]
27
[16]
28
[17]
<01>
Defines the output used for the latch.
The output must be defined as B.activity
in the set-up menu ‘Outputs’.
On during halt
[0]
No
[1]
Yes
<No>
Defines if the (latch) output will remain activated
during halts in batching sequence.
Note: This parameter is only shown if
Activity type is set to Latch on.
No: Output is deactivated during halt.
Yes: Output will remain activated during halt.
Ack. type
See under ” Weighing In or Out”
Ack. input no
See under ” Weighing In or Out”
Manual (Activity type = Manual)
Print weight
[0]
No
[1]
Yes
<No>
Defines if the weight value (from the scale or manually
entered) is printed and accumulated.
No: No printing or accumulation.
Yes: The weight value is printed and accumulated.
Enter weight
[0]
No
[1]
Yes
<No>
Defines if the operator shall have the opportunity
to manually enter a weight value.
No: Not possible to enter a weight value manually.
Yes: Possible to enter a weight value manually.
7-19
Technical Manual
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
Pulse batching (Activity type = Pulse batch)
Batching mode
[0]
One phase
[1]
Fine+Coarse
< Fine+Coarse >
Defines if it is a one phase batching or
a Coarse/Fine batching.
One phase: One phase batching (only one output).
Fine+Coarse: Coarse-fine batching (two outputs used).
Output no
Defines the output used for one phase batching.
The output must be defined as B.activity
in the set-up menu ‘Outputs’.
[0]
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[12]
[13]
[14]
[15]
[16]
[17]
01
02
11
12
13
14
15
16
17
18
21
22
23
24
25
26
27
28
<01>
Coarse outp. no
01
[0]
02
[1]
11
[2]
12
[3]
13
[4]
14
[5]
15
[6]
16
[7]
17
[8]
18
[9]
21
[10]
22
[11]
23
[12]
24
[13]
25
[14]
26
[15]
27
[16]
28
[17]
<01>
7-20
Note: This parameter is only shown if
Batching mode is set to One phase.
Defines the output used for coarse batching.
The output must be defined as B.activity
in the set-up menu ‘Outputs’.
Note: This parameter is only shown if
Batching mode is set to Fine+Coarse.
Weight Indicator TAD 3
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
Fine output no
01
[0]
02
[1]
11
[2]
12
[3]
13
[4]
14
[5]
15
[6]
16
[7]
17
[8]
18
[9]
21
[10]
22
[11]
23
[12]
24
[13]
25
[14]
26
[15]
27
[16]
28
[17]
<01>
Defines the output used for fine batching.
The output must be defined as B.activity
in the set-up menu ‘Outputs’.
F. on during C.
[0]
No
[1]
Yes
<No>
Defines if the fine output shall be active during
the coarse batching phase.
Note: This parameter is only shown if
Batching mode is set to Fine+Coarse.
Note: This parameter is only shown if
Batching mode is set to Fine+Coarse.
No: Only the coarse output is active during
the coarse batching phase.
Yes: Both coarse and fine outputs are activated
during the coarse batching phase.
Fine value *
Range: +/-999999
Unit:
Pulse batch. unit.
<0.0>
The amount of material batched in the fine batching
phase.
Note: This parameter is only shown if
Batching mode is set to Fine+Coarse.
7-21
Technical Manual
[index] Range/Alternatives
<default value>
Minus tolerance *
Range:
0.00 - 100.00
Unit: %.
<100.00>
Explanation and
result of alternatives.
Minus tolerance value.
100 % = No tolerance check.
Plus tolerance *
Range:
0.00 - 100.00
Unit: %.
<100.00>
Plus tolerance value.
Inflight factor *
Range: 0 - 100
Unit: %.
<0>
Automatic inflight compensation is performed with
this factor. The ”Inflight value” is corrected with
the resulting batching error multiplied by this factor.
Inflight value *
Range: 0 - 999999
Unit:
Pulse batch. unit.
<0.0>
Batching will be completed (output deactivated)
when this value remains to batch.
Wait time *
Range: 0.1 - 999.9
Unit: s.
<5.0>
Time from completed batching (outputs off)
to tolerance check.
Pulsing time *
Range: 0.1 - 999.9
Unit: s.
<0.0>
Time for one pulse on the output Fine/Output when
setpoint value is not reached after the ordinary batching
(minus tolerance error).
Timeout value *
Range: 0 - 9999
Unit: s.
<0>
Max. allowed time for complete batching of
the component (activity).
Ack. type
See under ”Weighing In or Out”
Ack. input no
See under ” Weighing In or Out”
7-22
100 % = No tolerance check.
0 = No automatic inflight compensation.
If automatic inflight compensation is used,
this value is adjusted after each batch.
0 = No pulsing
0 = No timeout control.
Weight Indicator TAD 3
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
Pulse input no
[0]
01
[1]
02
<01>
Defines the input used for pulse counting.
The input must be defined as B. activity
in the set-up menu ‘Inputs’.
No of decimals
0
[0]
1
[1]
2
[2]
3
[3]
<0>
Defines if the number of decimals used
for the pulse batching unit.
Unit
[0]
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[12]
[13]
[14]
[15]
[16]
[17]
[18]
[19]
[20]
[21]
Defines the engineering unit that should
be used for pulse batching.
NONE
g
kg
t
lb
N
kN
oz
psi
kPa
MPa
bar
l
lbf
kgf
PLI
N/m
kN/m
Nm
daN
mV/V
pls
<kg>
Scale factor
Range:
0.001 - 999.999
Unit: –
<1.000>
Number of counted pulses/Unit.
7-23
Technical Manual
Modbus register definition for batching parameters.
The Modbus register numbers below are used to read and write the parameters
in the ”Float” format. To use the ”Modicon float” format, add 5000 to the register
numbers. See section Communication for explanation of the data formats.
Display no of B.
Display B-size
Parameter
Activity type
Activity name
Batching mode
Output no
Coarse outp. no
Fine output no
F. on during C.
Fine value
Minus tolerance
Plus tolerance
Inflight factor
Inflight value
Wait time
Pulsing time
Timeout value
Ack. type
Ack. input no
Low level
High level
On during halt
Print weight
Enter weight
Pulse input no
No of decimals
Unit
Scale factor
41400
41402
Act. 1
41408
44600*
41410
41412
41414
41416
41418
41420
41422
41424
41426
41428
41430
41432
41434
41436
41438
41440
41442
41444
41446
41448
41450
41452
41454
41456
Batch printouts
Batch end mode
Act. 2
41458
44606*
41460
41462
41464
41466
41468
41470
41472
41444
41476
41478
41480
41482
41484
41486
41488
41490
41492
41494
41496
41498
41500
41502
41504
41506
Act. 3
41508
44612*
41510
41512
41514
41516
41518
41520
41522
41524
41526
41528
41530
41532
41534
41536
41538
41540
41542
41544
41546
41548
41550
41552
41554
41556
Act. 4
41558
44618*
41560
41562
41564
41566
41568
41570
41572
41544
41576
41578
41580
41582
41584
41586
41588
41590
41592
41594
41596
41598
41600
41602
41604
41606
41404
41406
Act. 5
41608
44624*
41610
41612
41614
41616
41618
41620
41622
41624
41626
41628
41630
41632
41634
41636
41638
41640
41642
41644
41646
41648
41650
41652
41654
41656
* String set-up parameter (12 character -> 6 registers).
See section Communication for explanation of the string data format.
7-24
Act. 6
41658
44630*
41660
41662
41664
41666
41668
41670
41672
41644
41676
41678
41680
41682
41684
41686
41688
41690
41692
41694
41696
41698
41700
41702
41704
41706
Weight Indicator TAD 3
Operation
When TAD 3 is in normal operation, displaying the weight value, and
the batching option is activated, this is indicated by the text BATCH
at the function key to the left.
Pressing that key will open the Batching menu.
Menu Batching
TAD 3 displays the weight
value and the batching option
is activated.
BATCH
376.8 kg
Net
2002-12-02 12:08
BATCH
Batching to start
Num. of batches 3
Batch size
100
A1:WATER
40.0
BACK
UP
DOWN
%
kg
EDIT
The Batching menu shows the actual batch data in a scrolling list with a cursor
that can be positioned by function keys UP and DOWN. In this list, editing of
batch number, batch size, and Setpoint values for the activities can be performed
by function key EDIT and the digit keys.
Num. of batches (if activated) shows the number of batches to perform.
If this line is not activated only one batch at a time can be performed.
(Number of batches can be edited in the range 1 to 999999.)
Batch size (if activated) shows the size of one batch, in percent or in weight:
If this line is not activated, the batch size is the sum of all Setpoint values
without scaling, for the activity types ‘Weigh in’, ‘Weigh out’, ‘Manual’,
and ‘Puls batch’.
If percentage is shown, the Setpoint values (except for Timer) will be
scaled by that percentage.
(Batch percentage can be edited in the range 1 to 999999 %).
If weight is shown, the Setpoint values (except for Timer) will be
scaled to produce the wanted batch size.
(Batch weight can be edited in the range 0.001 to 999999.0 units.)
NOTE! Strange effects may appear if ‘Unit’ for a Pulse batch activity
differs from ‘Measurement unit’ for the instrument, or if Weigh in and
Weigh out activities are used in the same batching sequence.
A1:, A2: etc. All used activities are listed. Each line shows the activity
number (A1: etc.), the activity name (if a name is given
in menu ‘Batching parameters’), and actual Setpoint value.
(Setpoint values can be edited in the range 0 to 999999 units or seconds.)
7-25
Technical Manual
Batching commands
Below a description is given for how batching commands are given from
the front panel of Weight Indicator TAD 3.
These batching commands can also be given from a control computer by serial
communication or from external keys, defined in menu ‘Edit set-up’ / ‘Inputs’.
Start batching
Batching can be started as the menu ‘Batching – <I> to start’ is displayed.
Press the start key, i.e. key - (minus), also marked with a green start symbol.
The batching view will open with the actual weight value in the upper field.
Next line shows the activity number and name (if defined), and the setpoint value,
possibly scaled for the commanded batch size.
The bottom line shows the actual batching step and batch number (CNT:).
(START)
003.8 kg
A1:WATER
Batching coarse
S:
CNT:
Net
40.0 kg
1
Batching can also be started from a digital input or via serial communication when
normal weight is displayed, when menu Batching is open, and when the view
Batching finished is displayed.
Reset alarm
If an alarm is obtained the batching will be halted and the cause of the alarm
will be displayed.
The alarm can be reset from the front panel by function key A.RESET.
ALARM
012.0 kg
Net
A1:WATER
S:
40.0 kg
** UNSTABLE WEIGHT ALARM **
A.RESET
After the alarm has been reset, batching can be restarted, or it can be ended in
different ways. See next page.
Stop batching
At any time, batching can be halted from the instrument panel.
Press the stop key, i.e. key . (point), also marked with a red stop symbol.
(STOP)
012.0 kg
A1:WATER
HALTED
RESTART FINISH
Net
S:
40.0 kg
CNT:
3
SKIP.AC RESET
When batching is halted it can be restarted, or it can be ended in different ways.
See next page.
7-26
Weight Indicator TAD 3
Restart batching
As batching is halted (and a possible alarm has been reset) the batching operation
can be restarted from where it was stopped by function key RESTART at the
instrument front panel.
Finish batch
Function key FINISH is shown only if a batching operation with several batches
is halted (and a possible alarm has been reset).
If FINISH is pressed the remaining activities of the actual batch will be performed.
After that the batching operation will be ended.
Skip activity
As batching is halted (and a possible alarm has been reset) the current activity can be
skipped by function key SKIP.AC. This means that the weight of the material that may
have been batched will be accumulated and printed. After that batching will continue
with next activity in the sequence.
Terminate batching
As batching is halted (and a possible alarm has been reset) the batching operation
can be terminated by function key RESET. The weight of the material that may have
been batched will be accumulated and printed. After that the batching operation will
be ended.
Manual operation
Activity type Manual halts the batching sequence to allow manual operation, for
example adding of a small quantity of material.
Auto taring is performed so net weight zero will be displayed.
The instrument can be set for weighing of the manually added material.
Add material to make the weight value equal to the shown Setpoint value.
Then function key RESTART should be pressed to continue the batching.
Manual
000.0 kg
A3:MAN
HALTED, MANUAL
RESTART
Net
S:
2.0 kg
CNT:
1
SKIP.AC RESET
Alternatively the instrument can be set to allow manual entry by the digit keys
of the added material weight value.
Manually add the amount of material, given as Setpoint value.
Press function key MANEDIT to edit the ‘Manual value: ‘
Use the digit keys to enter the added material weight value at ‘Manual value: ‘
and finish the entry by key ↵ .
Then function key RESTART should be pressed to continue the batching.
(If no weight value is entered, the weight value from the scale will be used.)
Manual
000.0 kg
Net
Manual value:
A3:MAN
S:
2.0 kg
HALTED, MANUAL
CNT:
1
RESTART MANEDIT SKIP.AC RESET
7-27
Technical Manual
Accumulated weights
One accumulated weight will be created for each batching activity of the types
Weigh in, Weigh out, Manual (if Print weight is Yes), and Pulse batching.
One accumulated weight (Activity total) will also be created for the sum of
all the above activities.
(Pulse batching values will be added to ‘Activity total’ only if the ‘Unit’ for
Pulse batching is equal to ‘Measurement unit’.)
For more information about accumulated weights, see page 5-8 and 5-9.
Printing
Printout of batching reports will be performed automatically according to the setting
of parameter ‘Batch printout’ in menu ‘Batching parameters’:
No
no reports will be printed.
Full report
reports will be printed containing a report header, the batch
number, batched weight values, alarms that have occurred
and other information (like Latch ON, HALTED etc.).
Limited rep. reports will be printed containing a report header, the batch
number, batched weight values, and the alarms that have
occurred during the batching.
Only alarms
reports will be printed containing date and time for all alarms
that have occurred during the batching.
Printout of all Batch data (number of batches, batch size, setpoints), used
in the batching operation, can be started by pressing the PRINT key when
menu ‘Batching’ is displayed.
Printout of the batching parameters in use can be started from menu
‘Main menu’ / ‘Batching parameters’ by pressing the PRINT key.
7-28
Weight Indicator TAD 3
Batching alarms
General
When a batching alarm is initiated, the following events take place:
Batching is halted and all batching outputs are deactivated.
The outputs for ‘Batch. alarm’ and ‘B. stopped’ will be activated.
An alarm message is displayed.
An alarm report is printed.
Whenever an alarm has been obtained, alarm reset and restart of batching are
required (pressing of function keys A.RESET and RESTART). If restart of batching is
not possible, batching must be terminated (by RESET) or the activity must be skipped
(by SKIP.AC). After a restart the instrument will continue the batching sequence.
Batching alarms
** SETPOINT ALARM **
Weigh in: The vessel, being batched to, does not have sufficient volume to contain
the desired quantity of material (the gross weight will exceed Capacity).
Weigh out: The contents of the vessel (gross weight) is not sufficient to batch out
the desired quantity of material.
** ACKNOWLEDGE ALARM **
The alarm is caused by absence of acknowledgement signal.
Instrument behaviour depends on the selected acknowledgement type (Ack.type):
No test: An alarm is never obtained in this case.
At start: An acknowledgement signal was not present at start of activity.
Wait: An alarm is never obtained in this case.
NOTE! If an acknowledgement signal is not present, the instrument
waits for an acknowledgement signal for any length of time,
displaying the text ‘Checking ack.’.
Continuous: The acknowledgement signal was cancelled during the activity or was
not present at starting.
Wait+contin.: Identical to Wait until start of activity, after that identical to
Continuous.
** TIMEOUT ALARM **
The activity was not completed within the specified maximum time, set by parameter
(Timeout value).
** MINUS TOLERANCE ALARM **
Batched weight below minus tolerance limit.
** PLUS TOLERANCE ALARM **
Batched weight exceeds plus tolerance limit.
** UNSTABLE WEIGHT ALARM **
Weight not stable after Wait time (obtained only if Motion check is On).
** WEIGHT ALARM **
Incorrect weight (e.g. transducer or weight converter fault).
7-29
Technical Manual
Serial communication
General
For a detailed description of communication interface and transmission principles,
see section 6. Communication in this manual.
Everything that can be performed from the front panel, except controlling a Manual
activity, can also be performed from a control computer via serial communication.
Modbus registers
This section only deals with the registers used in batching.
The registers are presented in tables, and some information in detail is also given.
Last activity registers
Data type:
Integer
Data type:
Float
(2 reg./value)
Data type:
Modicon float
(2 reg./value)
Explanation
R/W
40100 (1 reg)
40300
45300
Counter (free running)
R
40101 (3 reg)
40302
45302
Batch number
R
40104 (1 reg)
40304
45304
Activity number
R
40105 (3 reg)
40306
45306
Setpoint
R
40108 (3 reg)
40308
45308
Batched quantity
R
All these registers are updated each time an activity of the types ‘Weigh in’,
‘Weigh out’, ‘Manual’, and ‘Pulse batch’ is ended.
Register ‘Counter’ will increment one step for each update and can be used to indicate
when the activity is ended.
7-30
Weight Indicator TAD 3
Last batch registers
Data type:
Integer
Data type:
Float
(2 reg./value)
Data type:
Modicon float
(2 reg./value)
Explanation
R/W
40114 (1 reg)
40314
45314
Counter (free running)
R
40115 (1 reg)
40316
45316
Creation time, hour
R
40116 (1 reg)
40318
45318
Creation time, minutes
R
40117 (3 reg)
40320
45320
Batch number
R
40120 (3 reg)
40322
45322
Subtotal
R
40123 (3 reg)
40324
45324
Activity 1 setpoint
R
40126 (3 reg)
40326
45326
Act. 1 batched quantity
R
40129 (3 reg)
40328
45328
Activity 2 setpoint
R
40132 (3 reg)
40330
45330
Act. 2 batched quantity
R
40135 (3 reg)
40332
45332
Activity 3 setpoint
R
40138 (3 reg)
40334
45334
Act. 3 batched quantity
R
40141 (3 reg)
40336
45336
Activity 4 setpoint
R
40144 (3 reg)
40338
45338
Act. 4 batched quantity
R
40147 (3 reg)
40340
45340
Activity 5 setpoint
R
40150 (3 reg)
40342
45342
Act. 5 batched quantity
R
40153 (3 reg)
40344
45344
Activity 6 setpoint
R
40156 (3 reg)
40346
45346
Act. 6 batched quantity
R
All these registers are updated each time a batching sequence is ended.
Register ‘Counter’ will increment one step for each update and can be used
to indicate when the sequence is ended.
7-31
Technical Manual
Current batching status registers
Data type:
Integer
Data type:
Float
(2 reg./value)
Data type:
Modicon float
(2 reg./value)
Explanation
R/W
40162 (1 reg)
40350
45350
Batching Status
R
40163 (1 reg)
40352
45352
Batching Step
R
40164 (1 reg)
40354
45354
Batching Alarm
R
40165 (3 reg)
40356
45356
Batch number
R
40168 (1 reg)
40358
45358
Current Activity
R
40169 (3 reg)
40360
45360
Current setpoint
R
40172 (3 reg)
40362
45362
Current quantity *
R
In registers Batching Status, Batching Step and Batching Alarm the status is described
by codes, explained on pages 7-34 and 7-35.
* – Displayed net weight for a Weigh in, Weigh out or Dump activity.
– Displayed gross weight for a Fill or Dump activity.
– Calculated weight (no of pulses/scale factor) for a Pulse batching activity.
– Remaining time for a Timer or Timer with output activity.
– Zero for all other activities (Latch on, Latch off).
Batch data registers
Data type:
Integer
Data type:
Float
(2 reg./value)
Data type:
Modicon float
(2 reg./value)
Explanation
R/W
44072 (3 reg)
41848
46848
Number of batches
R/W
44075 (3 reg)
41850
46850
Batch size
R/W
44078 (3 reg)
41852
46852
Activity 1 setpoint
R/W
44081 (3 reg)
41854
46854
Activity 2 setpoint
R/W
44084 (3 reg)
41856
46856
Activity 3 setpoint
R/W
44087 (3 reg)
41858
46858
Activity 4 setpoint
R/W
44090 (3 reg)
41860
46860
Activity 5 setpoint
R/W
44093 (3 reg)
41862
46862
Activity 6 setpoint
R/W
7-32
Weight Indicator TAD 3
Accumulated weight registers for batching
Data type:
Integer
Data type:
Float
(2 reg./value)
Data type:
Modicon float
(2 reg./value)
Explanation
R/W
40766 (3 reg)
40604
45604
Activity 1
acc. weight LOW
R/W
40769 (3 reg)
40606
45606
Activity 1
acc. weight HIGH
R/W
40772 (3 reg)
40608
45608
Activity 2
acc. weight LOW
R/W
40775 (3 reg)
40610
45610
Activity 2
acc. weight HIGH
R/W
40778 (3 reg)
40612
45612
Activity 3
acc. weight LOW
R/W
40781 (3 reg)
40614
45614
Activity 3
acc. weight HIGH
R/W
40784 (3 reg)
40616
45616
Activity 4
acc. weight LOW
R/W
40787 (3 reg)
40618
45618
Activity 4
acc. weight HIGH
R/W
40790 (3 reg)
40620
45620
Activity 5
acc. weight LOW
R/W
40793 (3 reg)
40622
45622
Activity 5
acc. weight HIGH
R/W
40796 (3 reg)
40624
45624
Activity 6
acc. weight LOW
R/W
40799 (3 reg)
40626
45626
Activity 6
acc. weight HIGH
R/W
40802 (3 reg)
40628
45628
Activity total
acc. weight LOW
R/W
40805 (3 reg)
40630
45630
Activity total
acc. weight HIGH
R/W
Accumulated weight is represented by two values (HIGH, LOW). To get
the resulting value multiply value HIGH by 10000 and add value LOW.
LOW is a value between ±9999.999 with 3 decimals. HIGH is a value without decimals
between ±999999.
To zero accumulated weight, send 0 to both HIGH and LOW.
7-33
Technical Manual
Batching status
This register contains the batching status.
Code
Description
00
Batching not active
01
Batching running
02
Batching halted
03
Batching alarm
04
Batching halted for manual operation
Batching step
This register contains the batching step.
Code
Description
00
Batching not active
01
Initialise batching
02
Starting batching
03
Initialising activity
04
Checking acknowledge
05
Checking setpoint
06
Autotaring
07
Batching coarse
08
Batching fine
09
Batching one phase
10
Pulse batching coarse
11
Pulse batching fine
12
Pulse batching one phase
13
Delay after batching
14
Checking tolerance
15
Pulsing
16
Dumping
17
Delay after dumping
18
Filling material
19
Delay after filling
(continued)
7-34
Weight Indicator TAD 3
(continued)
20
Timing
21
Timing with output
22
Activating latch
23
Deactivating latch
24
Manual operation
25
Finishing manual operation
26
Finishing activity
27
Finishing batching
28
Resetting batching
29
Skipping activity
Batching alarm
This register contains the batching alarms present.
Code
Description
00
No alarm
01
Setpoint alarm
02
Acknowledge alarm
03
Timeout alarm
04
Minus tolerance alarm
05
Plus tolerance alarm
06
Unstable weight alarm
07
Weight error alarm
7-35
Technical Manual
Batching commands
Only the commands used by batching are shown in the table below.
Command description
Cmd Action activated in TAD 3
50
Start batching
51
Stop batching
52
Reset batching
53
Restart batching
54
Reset batching alarm
55
Skip batching activity
56
Finish batching
57
Show weight after batching
7-36
Weight Indicator TAD 3
8. Flow rate (program option)
General
From programme name T002A200, the Weight Indicator TAD 3 includes a
program option for flow measurement. The option can be activated by an individual
code for each instrument. The code can be ordered from Nobel Weighing Systems
and should be entered in menu ‘Program options’ in ‘Edit set-up’ under the
instrument Main menu.
See page 3-34 in this manual for instructions.
As option ‘Flow’ is activated the text ‘F/W’ is displayed during normal operation at
the function key to the right on the instrument panel.
The flow rate value can be shown on the display, checked by the level supervision,
sent to an analogue output or to a remote display, and it can also be fetched by
serial communication.
Operation
As option ‘Flow’ is activated TAD 3 calculates the flow by measuring the weight
change during a selected integration time and dividing by the time.
The flow rate can be displayed as weight change per second, per minute
or per hour.
TAD 3 will display weight or flow value, and switch over between weight and flow is
accomplished with the function key 'W/F' or the digit key 4, also marked ‘F4’.
Switch over can also be accomplished by a digital input.
While the flow value is shown at the normal display position, the weight value can
be displayed at the information line, and vice versa, provided the set-up parameter
‘Display info’ in Edit set-up/General is set to ‘Off’.
8-1
Technical Manual
Flow rate parameters
Changing and storing
Data entered to define flow rate parameters are stored in power safe memory.
Stored information will not be lost if the instrument is switched off.
Parameter editing can be performed in menu ‘Flow rate’, by the front panel keys
or by serial communication. The menu is available under ‘Edit set-up’, provided
normal measuring operation has been stopped.
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
Menu ‘Flow rate’ (Program option)
Flow rate res
[0]
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[12]
[13]
[14]
0.001
0.002
0.005
0.01
0.02
0.05
0.1
0.2
0.5
1
2
5
10
20
50
Modbus: 41312 (46312)
Defines the decimal point position and resolution format
for the flow rate value.
All set-up parameters using the flow rate unit will be
written with the decimal point position selected in
this menu.
If the last digits of the flow rate value are not stable,
a more coarse resolution can be selected to get
a stable reading.
<0.02>
Flow rate unit
Unit/s
[0]
Unit/min
[1]
Unit/h
[2]
Unit*1000/m
[3]
Unit*1000/h
[4]
<Unit/s>
Modbus: 41314 (46314)
Defines the engineering unit that should be used for
the flow rate value and for related set-up parameters.
Unit/s: Measurement unit per second.
Unit/min: Measurement unit per minute.
Unit/h: Measurement unit per hour.
Unit*1000/m: Measurement unit * 1000 per minute.
Unit*1000/h: Measurement unit * 1000 per hour.
If the flow rate unit exceeds 4 characters then it will be
represented as ”/s”, ”/min”,”/h”, ”*/mi” or ”*/h” in
the set-up menus.
In the case of ”Unit*1000/m” or ”Unit*1000/h” then
some flow rate units will be preceded by a ”k” and
some will be converted, for example ”kg” to ”t”.
8-2
Weight Indicator TAD 3
[index] Range/Alternatives
<default value>
Explanation and
result of alternatives.
Auto deriv. time
Modbus: 41310 (46310)
[0]
[1]
The derivation time can be entered manually or
calculated automatically by the instrument.
Off
On
<On>
Off: Manual entering of derivation time.
On: Automatic calculation of derivation time.
Derivation time
Modbus: 41316 (46316)
Range:
0.20 – 3600.00
Unit: s
<0.64>
The flow rate is the weight change over the latest
elapsed ”Derivation time” divided by this time.
At calibration the derivation time is always adjusted
by the instrument to the nearest possible value
(depending on the filter time).
Setting of ‘Flow Rate Resolution’
Parameter ‘Flow rate res’ defines the decimal point position and resolution for
the flow rate value. All set-up parameters using the flow rate unit will be written
with the decimal point position selected in this menu. If the last digits of the flow
rate value are not stable, a more coarse resolution can be selected to get a stable
reading. A more coarse resolution will also result in a shorter derivation time
(if ‘Automatic derivation time’ is set to ‘On’).
Setting of ‘Flow Rate Unit’
Parameter ‘Flow rate unit’ defines the engineering unit that should be used for
the flow rate value and for related set-up parameters.
If the flow rate unit exceeds 4 characters then it will be represented as ”/s”,
”/min”,”/h”, ”*/mi” or ”*/h” in the set-up menus.
In the case of ”Unit*1000/m” or ”Unit*1000/h” then some flow rate units will be
preceded by a ”k”.
Other flow rate units will be converted, according to the table below.
Measurement unit
Flow rate unit * 1000
kg
t
kN
MN
kPa
Mpa
MPa
GPa
l
m3
kgf
Mgf
kN/m
MN/m
mV/V
V/V
8-3
Technical Manual
Setting of ‘Flow Rate Derivation Time’
To enable the instrument to make a correct measurement of flow rates, a derivation
time must be selected in accordance with the desired accuracy.
If ‘Auto deriv. time’ is set to ‘On’ then the instrument will calculate a derivation time
based on the current calibration (including filter parameters), the ‘Flow rate res’ and
the ‘Flow rate unit’. The instrument tries to calculate a derivation time that will give a
stable and accurate flow rate value at the current settings (provided that the weight
is stable).
A longer filter time and/or a more coarse ‘Flow rate res’ will give shorter derivation
times. The automatically calculated derivation is limited to its defined max. and min.
values.
If ‘Auto deriv. time’ is set to ‘Off’, then the derivation time must be entered manually.
The instrument will accept any derivation (within its min. and max. limits) and it is up to
the user to select a suitable derivation time for the application.
At calibration the derivation time is always adjusted by the instrument to the nearest
possible value (depending on the filter time).
Flow rate update time
The flow rate value is updated every weight conversion if the number of weight
conversions is < = 64 per derivation time period. In other cases it is updated
64 times per derivation time period. At start-up the accuracy of the flow rate
will not gain full precision until after a full derivation time period.
Flow rate value to analogue output
The flow rate value can be obtained on a connected analogue output.
The settings for analogue outputs are found in the menu 'Analog outputs'
(section 3 in this manual).
Level supervision of the flow rate value
It is possible to level supervise the flow rate value and use it in the setpoint function.
The settings for level supervision and setpoint function are found in the menu
'Level supervision' (chapter 3 in the manual).
Serial communication
The flow rate value can be read from a register by using serial communication.
It’s also possible to control if flow rate or weight should be shown on the display.
8-4
Weight Indicator TAD 3
Hints and examples
First of all it is important to have a good weighing application where you use
the loadcells in a good way to get high resolution and accuracy. It is possible
to use long filter time in TAD 3 to get a higher resolution and accuracy.
To get rid of noise it’s important to have as high signal from the loadcells
as possible.
Example:
We assume that you can calibrate the scale to get a stable weight reading with
resolution 0.2 kg (use longer filter time if necessary).
The flow rate function measures the weight difference during one derivation time
and we assume that we can get a weight error less than one weight division.
• A derivation time of 10 seconds gives a flow rate error of:
0.2 / 10 = 0.02 kg/s (72 kg/h)
• A derivation time of 100 seconds gives a flow rate error of:
0.2 / 100 = 0.002 kg/s (7.2 kg/h)
In an application where you have a nominal flow rate of 1500 kg/h
you will get an error of:
72 / 1500 = 4.8 % for a derivation time of 10 seconds and
7.2 / 1500 = 0.48 % for a derivation time of 100 seconds in this example.
If it is possible to calibrate the scale with a better resolution (you still need
to have a stable weight) then you can achieve a better flow rate accuracy and/or a
shorter derivation time.
NOTE!
The flow rate calculation is not depending on the final selected weight resolution.
8-5
Technical Manual
8-6
Weight Indicator TAD 3
9. Additional units
General
By the I/O bus for TAD 3, additional units can be connected via serial port Com 2.
Two types of additional units are available, DIO 3R and ANA 3. Maximum two
DIO 3R units and two ANA 3 units can be connected at the same time.
The I/O bus is a Modbus protocol on RS-485 that can be transmitted on 2-wires or
4-wires in a shielded cable with twisted pairs. The total length of the I/O bus cable must
not exceed 50 m.
If ANA 3 is connected to the I/O bus, the baud rate may be max. 115200 and
‘pull down’ resistor(s) must be mounted in accordance with the diagrams below.
Terminating resitors for the I/O bus cable impedance should NOT be used.
Figure 23. Maximum number of DIO 3R and ANA 3 units, connected
to TAD 3 by 4-wire and 2-wire I/O bus cable.
9-1
Technical Manual
DIO 3R Digital input/output unit
DIO 3R is used to increase the number of inputs and outputs for TAD 3. It features
eight digital inputs in two separate groups and eight separate relay outputs, each
with an indictor on the front panel, and one serial port for connection of external units.
The unit communicates with TAD 3 via a serial port for the I/O bus.
For technical data, refer to section 1. Introduction in this manual.
Figure 24. DIO 3R front panel and terminal blocks.
Mechanical installation
DIO 3R is built into a protective plastic housing that can be snap-mounted
on 35 mm wide DIN rail or screw attached on a flat surface.
149
30
110
5
7
35
75
60
Mounting holes,
2 x 4 mm dia.
The snap fasener for
DIN rail can be opened
with a fine screw driver.
134
Figure 25. Mechanical dimensions for DIO 3R.
9-2
Weight Indicator TAD 3
Electrical installation
All electrical connections to DIO 3R are made through plug-in terminal blocks.
Shielded cables are needed, except for the power supply. All cables should be
routed at least 200 mm from power cables to avoid electromagnetical interference.
Cable connection is shown below.
Power supply
Terminals 17, 18.
DIO 3R should be powered by 20 – 28 V DC,
see Technical data, connected according to
the diagram. Nobel Weighing Systems provides a
range of mains operated power supplies.
Serial communication, I/O bus to TAD 3
Terminals 19 – 23.
Unit DIO 3R should be connected to Com 2 at TAD 3 via the I/O bus.
Use shielded cable with twisted pairs, the total cable length must not exceed 50 m.
Terminating resistors for the cable impedance must NOT be mounted.
Connect the cable shield to ground close to DIO 3R.
Parameter COM2:Mode in menu ‘Edit set-up / Communication’ must be
set to ‘I/O bus’.
9-3
Technical Manual
DIO 3R unit number
Two switches between terminals 18 and 19 are
provided for setting of the unit number for DIO 3R.
The switches can be of two types.
DIO 3R unit
Switch left
Switch right
1
OFF
OFF
2
OFF
ON
For DIO 3R unit 1 the digital inputs and
digital outputs are named 11 to 18.
For DIO 3R unit 2 the digital inputs and
digital outputs are named 21 to 28.
Digital inputs
Terminals 24 – 28.
and 29 – 33.
Eight digital inputs in two groups, each group
with a common reference point.
The two groups are galvanically isolated from
each other.
An input will be active when +24 V is connected
to the terminal.
Function for the inputs must be defined
in menu Edit set-up / Inputs.
Digital outputs
Terminals 1 to 16.
Eight digital outputs (closing relay contacts)
galvanically isolated from each other.
An activated output is a closed contact.
Function for the outputs must be defined in
menu Edit set-up / Outputs.
9-4
Weight Indicator TAD 3
Serial communication via Com 3 or Com 4.
Terminals 34 – 38.
Serial port Com 3/4 on DIO 3R can be defined as Com 3 or Com 4 for TAD 3 in
menu ‘Edit set-up’ / ‘Communication’. This serial port, intended for RS-485
on 2-wires or 4-wires with common signal ground (COM.), should be used for
connection of external units to TAD 3.
Shielded cable with twisted pairs should be used, and the cable shield should be
connected to ground, preferably via the mounting rail.
The transmission line must be terminated at both ends.
When DIO 3R is at the end of the line, one of the termination switches should be
in ON position by 2-wire communication, both termination switches should be in
ON position by 4-wire communication.
(When DIO 3R is not at the end of the line, both switches should be in
OFF position.)
9-5
Technical Manual
ANA 3. Analogue output unit
ANA 3 is a high performance unit, providing an analogue output for
Weight Indicator TAD 3. All characteristics for the output are set by
parameters in TAD 3.
One or two ANA 3 units can be connected to TAD 3, communicating via
the I/O bus at serial port Com 2.
The module is easily installed on a DIN rail or a flat surface.
For technical data, refer to section 1. Introduction in this manual.
Figure 26. ANA 3 front panel and terminal blocks.
Mechanical installation
ANA 3 is built into a protective plastic housing that can be snap-mounted on a 35 mm
wide DIN rail, or screw attached on a flat surface.
Mounted modules should have at least 10 mm free space on each side.
30
110
5
7
35
75
60
Mounting holes,
2 x 4 mm dia.
100
The snap fastener for
DIN rail can be opened
with a fine screw driver.
85
Figure 27. Mechanical dimensions for ANA 3.
9-6
Weight Indicator TAD 3
Electrical installation
All electrical connections to ANA 3 are made through plug-in terminal blocks.
Shielded cables are needed, except for the power supply. All cables should be
routed at least 200 mm from power cables to avoid electromagnetical interference.
Cable connection is shown below.
Power supply
Terminals 17, 18.
ANA 3 should be powered by 20 – 28 V DC,
see Technical data, connected according to
the diagram. Nobel Weighing Systems provides
a range of mains operated power supplies.
Serial communication, I/O bus to TAD 3
Terminals 19 – 23.
ANA 3 should be connected to Com 2 at TAD 3 via the I/O bus. In the I/O bus,
the negative lines (RXD- , TXD-) must be connected to COM via 2.2 kohm resistors,
mounted on separate terminals at the last unit according to diagrams below.
Use shielded cable with twisted pairs, the total cable length must not exceed 50 m.
Terminating resistors for the cable impedance must NOT be mounted.
Connect the cable shield to ground close to ANA 3.
Parameter COM2:Mode in menu ‘Edit set-up / Communication’ must be set to ‘I/O bus’.
9-7
Technical Manual
ANA 3 unit number
A jumper inside the ANA 3 unit is used to define the unit number.
‘Analogue output 1’
the jumper connected in the position shown below.
(factory default)
‘Analogue output 2’
the jumper not connected.
LED
JUMPER
Figure 28. ANA 3 with the jumper in this position
is ‘Analogue output 1’ for TAD 3.
Analogue output
Terminals 24, 25.
A measured value will be presented as a current
or voltage signal, as selected in menu ‘Analogue
outputs’ in TAD 3.
Connect the cable shield to ground close to ANA 3.
Function for the analogue output must be defined
in menu ‘Edit set-up / Analogue outputs’.
9-8
Weight Indicator TAD 3
10. Troubleshooting
General
During installation or maintenance of the TAD 3 instrument, sub menu Diagnostics in
menu ‘Edit set-up’ may be useful for solving possible problems, especially when
external units are involved.
TAD 3 has an automatic error checking facility. This serves to facilitate troubleshooting
and to ensure that the instrument will function in the best possible manner.
When an error is detected, the measuring functions are interrupted, all outputs are set
passive, the analogue outputs are set to 0 V or 0 mA, and an error code
will be displayed.
Diagnostics
Menu ‘Diagnostics’ is useful by troubleshooting, to check instrument functions
and connections between TAD 3 and external units.
Digital input status can be read, digital and analogue output status can be set,
and the instrument calibration can be checked.
As ‘Diagnostics’ is used, menu ‘Edit set-up’ is open so normal measuring functions
are interrupted.
TAD 3 displays
the weight value.
354.5 kg
Net
2002-12-02 11:18
i
i
0
0
YES
'Operator code'
may be needed!
'Set-up code'
may br needed!
DOWN
(several times)
ENTER
Maim menu
Instrument name
Preset tare
Edit levels
UP
DOWN
BACK
ENTER
WARNING!
The measurement function
will be interrupted.
Are you sure to continue?
YES
NO
Edit set-up
Program options
Legal lock
Diagnostics
EXIT
UP
DOWN
ENTER
Diagnostics
Read digital inputs
Control digital outputs
Control analogue outputs
BACK
UP
DOWN
ENTER
In menu ‘Diagnostics’ the cursor can be positioned at a sub menu name.
When ENTER is pressed that sub menu will be opened.
10-1
Technical Manual
Read digital inputs.
In this menu the status of all digital inputs to TAD 3, internally or by additional
I/O units, can be monitored.
Status for the digital inputs can not be changed in this menu.
Position the cursor at sub menu name ‘Read digital inputs’ and press ENTER.
ENTER
Read digital inputs
01:P 02:P 11:- 12:- 13:- 14:15:- 16:- 17:- 18:- 21:- 22:23:- 24:- 25:- 26:- 27:- 28:BACK
01 and 02 are internal inputs to TAD 3,
11 - 18 are inputs through additional unit I/O 1,
21 - 28 are inputs through additional unit I/O 2.
Inputs that are not available (or not existing) are marked minus ( – ).
Available inputs are marked ‘A’ when active, marked ‘P’ when passive.
Control digital outputs.
In this menu the status of all digital (relay) outputs from TAD 3, internally or by
additional I/O units, can be monitored and edited.
Position the cursor at sub menu name ‘Control digital outputs’ and press ENTER.
ENTER
Control digital
01 P 02:P 11:15:- 16:- 17:23:- 24:- 25:CANCEL
LEFT
outputs
12:- 13:- 14:18:- 21:- 22:26:- 27:- 28:TOGGLE RIGHT
01 and 02 are internal outputs from TAD 3,
11 - 18 are outputs through additional unit I/O 1,
21 - 28 are outputs through additional unit I/O 2.
Outputs that are not available (or not existing) are marked minus ( – ).
Available outputs are marked ‘A’ (active) or ‘P’ (passive).
Initially all outputs are marked ‘–’ or ‘P’ because all available outputs are set passive
when ‘Edit set-up’ is opened and the normal measuring functions are interrupted.
Position the cursor at an available output, marked A or P. When TOGGLE is pressed,
the output will change status.
10-2
Weight Indicator TAD 3
Control analogue outputs.
Position the cursor at Diagnostics sub menu ‘Control analogue outputs’
and then press ENTER.
ENTER
Control analogue outputs
Test ana. outp.1 0.00
Test ana. outp.2 0.00
BACK
UP
DOWN
mA
V
EDIT
This menu can be opened, provided at least one of the parameters ‘Output source’
in menu Analogue outputs is set to something else than ‘Not in use’.
If the ‘Test ana.’ value for an output is replaced by ‘– – – – – – –’, it means that
the analogue output unit is not available and the value can not be edited.
When ‘Diagnostics’ is used normal measuring functions for TAD 3 are interrupted
and the analogue outputs are set to zero, so initially the value for the available
outputs will be 0.00 (mA or V).
To change the output signal, position the cursor at the wanted line, and press EDIT.
The cursor moves to the signal value for the analogue output, replaced by an
underscore line where a new value can be entered by the digit keys.
10-3
Technical Manual
Calibration check
By calibration check an internal calibration resistor is connected to the transducers,
provided that terminals 7 and 8 are interconnected. A calibration value will be shown
that should be equal to the set capacity of the scale.
The following requirements must be fulfilled if the calibration value should be
regarded as correct:
• The installation must be completely and correctly carried out according to
separate instructions.
• A value for ‘Shunt transd.sig’ must be stored during calibration.
• The calibration value should be read with the same load on the scale
as when the value of ‘Shunt transd.sig’ was stored (usually unloaded scale).
Operation
Calibration check should be done whenever you suspect a malfunction or at least
once a year. It is a check of the complete weighing circuit (weight transmitter, cables
and transducers).
Position the cursor at Diagnostics sub menu ‘Calibration check’,
and then press ENTER.
ENTER
Calibration check
00001.2 ( 00500.0)
--------mV/V
BACK
TOGGLE
TOGGLE
Calibration check
00499.9 ( 00500.0)
1.16657 mV/V
Calibration value
TOGGLE
BACK
The menu ‘Calibration check’ is opened, showing actual gross weight and,
in brackets, the scale capacity.
Press TOGGLE to perform a calibration check, i.e. the internal shunt resistor is
connected to the transducer (provided that terminals 7 and 8 are interconnected).
When the calibration check is finished the first line, outside the brackets, will show a
calibration value (the scale ‘Capacity’).
Any percentage deviation for the calibration value from the value in brackets may be
regarded as a possible error contribution in the weight value.
The deviation for the calibration value should be less than 0.02 % of the capacity.
Nevertheless, a deviation of +/-1 unit of the resolution should always be accepted.
The second line will indicate the transducer signal change in consequence of that
the calibration resistor is connected to the transducer.
10-4
Weight Indicator TAD 3
Error codes
When an error is detected, or when menu ‘Edit set-up’ is opened, all digital outputs
are set passive and the analogue outputs are set to 0 V or 0 mA.
This part provides a guidance on how to deal with the fault or error.
Some errors are displayed on TAD 3, containing a description of the error and
the error code.
The error codes can also be fetched by Modbus communication in the registers
‘Instrument error’ and ‘Command error’ (see section 6. Communication).
The error codes are divided in four groups, depending on their origin:
• Weight errors,
occur when transducer signals or weight values go
out of given ranges.
• Start-up errors,
occur only during start-up.
• General errors,
usually occur due to faulty entries from the front panel,
alternatively invalid data or unallowed commands from
the control unit.
• Set-up errors,
can only occur during instrument set-up (from the front panel
or by serial communication).
On the following pages a summary of all error codes is given
(note that code 000 always means 'no error').
Weight errors
The indication is either temporary or stays on until the cause is cured.
Error
code
Explanation
000
No error.
The instrument in ‘normal state’ and no error is detected.
001
Instrument in Remote set-up state.
Weight is not valid.
003
Instrument not in normal state.
Weight is not valid.
004
Overload
Overload means that the weight exceeds the highest allowed limit that is
specified in the set-up parameters ‘Overload check’ and ‘Overload limit’.
005
Over range
Overrange means that the input signal from the transducer exceeds
the operating range.
006
Underload
Underload means that the weight is below the lowest allowed limit that is
specified in the set-up parameters ‘Overload check’ and ‘Overload limit’.
10-5
Technical Manual
Error
code
Explanation
007
Under range
Underrange means that the input signal from the transducer is below
the operation range.
010
Excitation short-circuit. ” Check transducer connections ”
Either a short-circuit in the excitation circuit or too many transducers
connected. (A fault in a transducer or inside the instrument is also possible.)
Check transducer connections. See section, 2 Installation.
011
Sense voltage error. ” Check transducer connections ”
The sense voltage is too low, unbalanced or has a reversed polarity.
(A fault in a transducer or inside the instrument, is also possible.)
Check transducer connections. See section, 2 Installation.
012
Transducer signal error
The input signal is too high, for example due to a faulty or missing transducer
connection. (A fault in a transducer or inside the instrument is also possible.)
Check transducer connections. See section, 2 Installation.
013
Transducer signal out of range
The input signal is too high.
(A fault in accordance with Error 012 above is also possible.)
014
Invalid AD signal
Invalid AD signal is reported whilst the instrument is waiting for sufficient
conversion data to calculate a valid weight value. This indication is reported
during power-up and while switching the shunt calibration resistor to and from,
since the conversion will be momentarily unreliable.
015
Transducer sign. out of range
The input signal is too low.
(A fault in accordance with Error 012 above is also possible.)
019
Calibration resistor connected
Calibration resistor connected. The gross and net weight registers contain
the calibration value, see page 10-4, Calibration check.
10-6
Weight Indicator TAD 3
Start-up errors
These error codes can only appear during start-up.
Error
code
Explanation
080
Invalid set-up version.
This error usually occurs at first start-up after a program upgrade.
The actual settings have been replaced by default values.
Enter set-up mode, perform the necessary editing and save the new
parameter settings.
081
Invalid set-up data.
Indicates faulty set-up checksum. The actual settings have been replaced
by default values. Enter set-up mode, perform the necessary editing and
save the new parameter settings.
082
Invalid weight data.
This error code can occur at restart after a power failure, etc.
It indicates one or several faults among the stored data for auto tare,
preset tare, zero setting and gross/net mode. It also indicates that
the instrument is using default values
(0 for auto tare, preset tare and zero setting and gross/net is set to gross).
The operator must send a reset command from the control computer or
power off and on the instrument to achieve normal operation.
083-085
Invalid factory calibration.
Invalid factory calibration is a fatal error. It indicates that the range constant
stored in the EEPROM during manufacture has been corrupted.
Specially trained service personnel is required.
The distributor must be contacted.
086
Batching parameters error.
Indicates faulty batching parameter checksum. The actual settings
have been replaced by default values. Enter set-up mode, perform
the necessary editing and save the new parameter settings.
096
FRAM error.
FRAM memory error is a fatal error. It indicates equipment failure which
requires trained service personnel. The distributor must be contacted.
097
RAM error.
RAM memory error is a fatal error. It indicates equipment failure which
requires trained service personnel. The distributor must be contacted.
098
FLASH error.
Flash memory error is a fatal error. It indicates equipment failure which
requires trained service personnel. The distributor must be contacted.
099
Watchdog error.
If a watchdog error appears the system will be reinitialised.
The operator must then send a reset command from the control computer,
or power the instrument off and on, to achieve normal operation.
The program regularly sends impulses to a special watchdog circuit to
ensure that the circuits and the program operate correctly.
However, if these impulses for any reason are omitted the watchdog error
indication will result.
10-7
Technical Manual
General errors
These errors generally occur due to faulty entries from the front panel, alternatively
invalid data or unallowed commands from the control unit.
Error
code
Explanation
100
Instrument in wrong state.
The transmitted command is not applicable to the present TAD 3 mode.
101
Overrange entry.
Value over allowed range. Compare with restrictions for the parameter.
102
Underrange entry.
Value under allowed range. Compare with restrictions for the parameter.
103
Illegal start address.
Illegal modbus start address, when writing data to TAD 3.
104
Illegal number of registers.
Illegal number of modbus registers, when writing data to TAD 3.
105
Illegal value error.
Illegal data in modbus registers, when writing data to TAD 3.
106
Choice not available.
The choice is not valid in this program release of the TAD 3 software.
120
Unstable weight.
Zero setting always requires a stable weight on the scale. If motion check
is set to ON, also taring and printing of weight values require a stable weight
on the scale. Consequently, if you try to transmit a command for zero setting,
taring, or printing of weight value without awaiting a stable weight you will
receive this error code.
121
Taring not allowed (negative gross weight).
Taring is not allowed at negative gross weight if parameter ‘Overload check’
is set to Unipolar.
122
Instrument in net mode.
Zero setting requires that the instrument is in gross mode. However, if you try
to transmit a zero setting command while the scale is in net mode you’ll
receive this error code.
123
Outside zero setting limits.
Adjustment of the zero setting during operation is only possible if
the accumulated correction required is within 1% and +3% of
the capacity set-up.
Consequently, if you transmit a zero setting command while the required
adjustment is outside allowed range you will receive this error code.
124
(contined)
10-8
Setpoint(s) not in use.
Activation/Deactivation of setpoint(s) can not be done, as at least one of
the setpoint sources is/are set to ‘not in use’.
Weight Indicator TAD 3
(continued)
Error
code
Explanation
125
Below min. weight for printing!
This error message is displayed if an attempt is made to print out a weight
that is less than the ‘minimum weight for printing’.
126
Net mode not allowed.
Net weight can not be shown when the tare value equals 0.
127
Remote operation not allowed.
The enter remote operation command is only allowed when TAD 3 is
displaying weight.
130
Enter set-up/restore not allowed.
The transmitted command is not applicable to the present TAD 3 mode.
131
Exit set-up/restore not allowed.
The exit set-up command is only allowed when the instrument state is
”Remote set-up state” or ”Remote restore state”.
132
Wrong port for software upgrade.
Software upgrade is only possible via Com 1.
133
Function not allowed when legal lock is on.
Software upgrade, default set-up and restore set-up is not allowed when
the legal lock is set to On.
134
Option not enabled.
The command can not be executed as the needed Program option is not
enabled.
135
Wrong batching state.
The command can not be executed in this batching state.
136
Change not allowed during batching.
It’s not allowed to change the value during batching.
137
Command not allowed during batching.
The command is not allowed when batching is in progress.
138
Printer not ready.
The printer can not be handled as the buffer is full.
139
No printer configured.
Printout can not be performed as no printer is configured on any of
the serial ports.
140
Command not allowed at the moment.
The requested command is not allowed at the moment.
10-9
Technical Manual
Set-up errors
These errors occur only during instrument set-up, from the front panel or
by serial communication.
Certain errors depends on more than one set-up parameter and it is the operator's
responsibility to locate and correct all faulty set-up parameters.
Error
code
Explanation
160
Calibration weight error.
Weight error during calibration.
161
Parameter locked by legal lock.
The instrument is sealed by a legal lock, and the parameter you have tried
to change is locked.
162
Timeout when storing cal.point!
Transducer signal is not stable within 10 seconds by storing of
the calibration point.
163
Saving of set-up value not allowed.
Certain set-up parameters are dependent on other parameters and saved
automatically when you save a new value for the related set-up. Thereafter,
certain automatically saved parameters can only be browsed. If you try to
save a new value in one of these set-ups this indication will result.
164
Illegal set-up register.
Requested set-up parameter does not exist or is not defined.
165
Capacity/Resolution > 6 digits!
The Capacity value has more than the permitted 6 digits.
Select a combination of Resolution and Capacity that will result in
max. 6 digits plus decimal point.
166
Some parameters set to default.
Some parameters that were restored uses special choices that are not
allowed in this instrument. These parameters will be set to default.
167
Illegal calibration direction!
All weights with corresponding mV/V values must be increasing for
increasing calibration point number.
168
Warning - Calibration not finished! (All cal. points not stored).
A deadweight calibration was started, but all calibration points are
not stored.
169
Zero offset can not be changed.
When a deadweight calibration is started, all calibration points must
be stored before it’s possible to edit the parameters ‘set zero’ and
‘zero offset’.
170
Zero setting out of range (legal weighing limits) !
Limits for zeroing by legal weighing is ±10 % of Capacity.
(continued)
10-10
Weight Indicator TAD 3
(continued)
Error
code
Explanation
171 –
176
Input/Output used in activity [1–6] not defined as B. activity.
An input/output used in the batching activity 1–6 is not set to B. activity
in the input/output menu.
177
Warning
The flow rate derivation time is changed by the instrument.
As the flow rate derivation time is dependent on the calibration
this warning will occur when the derivation time is automatically changed by
more than 10 %.
187
Zero-track.rate too high!
Exit set-up/restore not allowed. The zero-track rate is too high.
Select a lower zero track rate.
188
Capacity/Resolution > 6 digits!
Exit set-up/restore not allowed.
The Capacity value has more than the permitted 6 digits. Select a
combination of Resolution and Capacity that will result in max. 6
digits plus decimal point.
189
Too high transd. signal in cal. point 2.
Exit set-up/restore not allowed, the mV/V signal in calibration point 2
is too high (often due to a previous, strange data sheet calibration).
190
Too high transd. signal in cal. point 2.
Exit set-up/restore not allowed, the mV/V signal in calibration point 2
is too high, due to strange data sheet calibration.
The conversion factor, rated load etc. does not correspond to each other.
191
Illegal calibration direction.
All weights with corresponding mV/V values must be increasing for
increasing calibration point number.
193 –
198
Input/Output used in activity [1–6] not defined as B. activity.
Exit set-up/restore not allowed, an input/output used in the batching activity
1–6 is not set to B. activity in the input/output menu.
199
COM3 and COM4 on the same unit.
COM3 and COM4 must be on separate I/O units.
41000 41798
Exit Remote Set-up/Restore not allowed.
There is an error in the parameter pointed out by this error code.
The parameter value is out of range.
10-11
Technical Manual
10-12
Weight Indicator TAD 3
Set-up list for TAD 3
Address: .......
Location/Notes: ..............................................................................................................
Progr. name: ................................. Ser. no.: ............................... Date: ....................
Modbus
number
Parameter
name
41000 (46000)
41002 (46002)
41004 (46004)
41006 (46006)
41008 (46008)
41010 (46010)
41012 (46012)
41014 (46014)
41016 (46016)
41018 (46018)
41020 (46020)
41022 (46022)
41024 (46024)
41026 (46026)
41028 (46028)
41030 (46030)
41032 (46032)
41034 (46034)
41036 (46036)
41038 (46038)
41040 (46040)
41042 (46042)
41044 (46044)
41046 (46046)
41048 (46048)
41050 (46050)
41052 (46052)
41054 (46054)
41056 (46056)
41058 (46058)
41060 (46060)
41062 (46062)
41064 (46064)
41066 (46066)
41068 (46068)
41070 (46070)
41072 (46072)
41074 (46074)
41076 (46076)
41078 (46078)
Language
Start mode
Display info
Display contrast
Backlight
Date format
Gross/Net key
Tare key
Print key
Zero key
Operator lock
Operator code
Set-up lock
Set-up code
Measurement unit
Resolution
Capacity
Mains frequency
Filter type
Filter time
Filter window
Motion detect w.
No-motion delay
Motion check
Min.weight print
Warm up time
Overload check
Overload limit
Zero-tracking
Zero-track.rate
Excitation
Tare corr.mode
Calibration type
Conv. factor
Number of transd
Rated load
Rated output 1
Rated output 2
Rated output 3
Rated output 4
Default
value
English [1]
Auto [1]
Date/Time [3]
4 [4]
5 [5]
YYYY-MM-DD [0]
On [1]
On [1]
On [1]
On [1]
Off [0]
1937
Off [0]
1937
kg [2]
0.1 [6]
500
50 Hz [0]
Standard [1]
800
10 * Resolution
1 * Resolution
1.0
Off [0]
0
0
Off [0]
Cap. + 9 * Res.
Off [0]
1
DC [0]
Auto [0]
Data sheet [0]
9.80665
3
2000.0
2.03900
2.03900
2.03900
2.03900
Set-up
value
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
Appendix 1.
Set-up list, page 1.
Technical Manual
Set-up list for TAD 3
Address: .......
Location/Notes: .............................................................................................................
Progr. name: ................................. Ser. no.: ............................... Date: ....................
Modbus
number
Parameter
name
41080 (46080)
41082 (46082)
41084 (46084)
41086 (46086)
41088 (46088)
41090 (46090)
41092 (46092)
41094 (46094)
41096 (46096)
41098 (46098)
41100 (46100)
41102 (46102)
41104 (46104)
41106 (46106)
41108 (46108)
41110 (46110)
41112 (46112)
41114 (46114)
41116 (46116)
41118 (46118)
41120 (46120)
41122 (46122)
41124 (46124)
41126 (46126)
41128 (46128)
41130 (46130)
41132 (46132)
41134 (46134)
41136 (46136)
41138 (46138)
41140 (46140)
41142 (46142)
41144 (46144)
41146 (46146)
41148 (46148)
41150 (46150)
41152 (46152)
41154 (46154)
41156 (46156)
41158 (46158)
41160 (46160)
41162 (46162)
Number of cal.p
Value cal. p.1
Value cal. p.2
Value cal. p.3
Value cal. p.4
Value cal. p.5
Value cal. p.6
Transd.sign. p.1
Transd.sign. p.2
Transd.sign. p.3
Transd.sign. p.4
Transd.sign. p.5
Transd.sign. p.6
Shunt cal. force
Shunt transd.sig
Set zero
Zero offset
Instrum. address
COM1:Mode
COM1:Baudrate
COM1:Data format
COM2:Mode
COM2:Baudrate
COM2:Data format
COM3:Mode
COM3:Baudrate
COM3:Data format
COM3:Position
COM4:Mode
COM4:Baudrate
COM4:Data format
COM4:Position
Ext. disp.mode
Ext. disp.format
Printer pos.1
Printer pos.2
Printer pos.3
Printer pos.4
Printer linefeed
Level 1 source
Level 1 outp.
Level 1 hyst.
Appendix 1.
Set-up list, page 2.
Default
value
2
0
500
0
0
0
0
0.00000
1.66631
2.03900
2.03900
2.03900
2.03900
2138.0
2.03900
Set-up
value
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
0
......................
1
......................
Modbus auto [2] ......................
9600 [5]
......................
8-none-1 [5]
......................
I/O bus [7]
......................
115200 [9]
......................
8-none-1 [5]
......................
Not in use [0]
......................
9600 [5]
......................
8-none-1 [5]
......................
Dig.I/O 1 [2]
......................
Not in use [0]
......................
9600 [5]
......................
8-none-1 [5]
......................
Dig.I/O 2 [3]
......................
Gross weight [0] ......................
6 [2]
......................
Disp weight [1] ......................
Not in use [0]
......................
Not in use [0]
......................
Not in use [0]
......................
0 [0]
......................
Not in use [0]
......................
Active above [0] ......................
0.2
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
Weight Indicator TAD 3
Set-up list for TAD 3
Address: .......
Location/Notes: ..............................................................................................................
Progr. name: ................................. Ser. no.: ............................... Date: ....................
Modbus
number
Parameter
name
Default
value
Set-up
value
41164 (46164)
41166 (46166)
41168 (46168)
41170 (46170)
41172 (46172)
41174 (46174)
41176 (46176)
41178 (46178)
41180 (46180)
41182 (46182)
41184 (46184)
41186 (46186)
41188 (46188)
41190 (46190)
41192 (46192)
41194 (46194)
41196 (46196)
41198 (46198)
41200 (46200)
41202 (46202)
41204 (46204)
41206 (46206)
41208 (46208)
41210 (46210)
41212 (46212)
41214 (46214)
41216 (46216)
41218 (46218)
41220 (46220)
41222 (46222)
41224 (46224)
41226 (46226)
41228 (46228)
41230 (46230)
41232 (46232)
41234 (46234)
41236 (46236)
41238 (46238)
41240 (46240)
41242 (46242)
41244 (46244)
Level 2 source
Level 2 outp.
Level 2 hyst.
Level 3 source
Level 3 outp.
Level 3 hyst.
Level 4 source
Level 4 outp.
Level 4 hyst.
Level 5 source
Level 5 outp.
Level 5 hyst.
Level 6 source
Level 6 outp.
Level 6 hyst.
Level 7 source
Level 7 outp.
Level 7 hyst.
Level 8 source
Level 8 outp.
Level 8 hyst.
Setp.1 source
Setp.2 source
Input 01 use
Input 02 use
Input 11 use
Input 12 use
Input 13 use
Input 14 use
Input 15 use
Input 16 use
Input 17 use
Input 18 use
Input 21 use
Input 22 use
Input 23 use
Input 24 use
Input 25 use
Input 26 use
Input 27 use
Input 28 use
Not in use [0]
Active above [0]
0.2
Not in use [0]
Active above [0]
0.2
Not in use [0]
Active above [0]
0.2
Not in use [0]
Active above [0]
0.2
Not in use [0]
Active above [0]
0.2
Not in use [0]
Active above [0]
0.2
Not in use [0]
Active above [0]
0.2
Not in use [0]
Not in use [0]
Not in use [0]
Not in use [0]
Not in use [0]
Not in use [0]
Not in use [0]
Not in use [0]
Not in use [0]
Not in use [0]
Not in use [0]
Not in use [0]
Not in use [0]
Not in use [0]
Not in use [0]
Not in use [0]
Not in use [0]
Not in use [0]
Not in use [0]
Not in use [0]
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
Appendix 1.
Set-up list, page 3.
Technical Manual
Set-up list for TAD 3
Address: .......
Location/Notes: .............................................................................................................
Progr. name: ................................. Ser. no.: ............................... Date: ....................
Modbus
number
Parameter
name
Default
value
Set-up
value
41246 (46246)
41248 (46248)
41250 (46250)
41252 (46252)
41254 (46254)
41256 (46256)
41258 (46258)
41260 (46260)
41262 (46262)
41264 (46264)
41266 (46266)
41268 (46268)
41270 (46270)
41272 (46272)
41274 (46274)
41276 (46276)
41278 (46278)
41280 (46280)
41282 (46282)
41284 (46284)
41286 (46286)
41288 (46288)
41290 (46290)
41292 (46292)
41294 (46294)
41296 (46296)
41298 (46298)
41300 (46300)
41302 (46302)
41304 (46304)
41306 (46306)
41308 (46308)
Output 01 use
Output 02 use
Output 11 use
Output 12 use
Output 13 use
Output 14 use
Output 15 use
Output 16 use
Output 17 use
Output 18 use
Output 21 use
Output 22 use
Output 23 use
Output 24 use
Output 25 use
Output 26 use
Output 27 use
Output 28 use
1:Output source
1:Output type
1:Range low
1:Range high
1:Low adjust
1:High adjust
1:Filter const.
2:Output source
2:Output type
2:Range low
2:Range high
2:Low adjust
2:High adjust
2:Filter const.
Not in use [0]
Not in use [0]
Not in use [0]
Not in use [0]
Not in use [0]
Not in use [0]
Not in use [0]
Not in use [0]
Not in use [0]
Not in use [0]
Not in use [0]
Not in use [0]
Not in use [0]
Not in use [0]
Not in use [0]
Not in use [0]
Not in use [0]
Not in use [0]
Not in use [0]
4-20mA [3]
0
500
0
0
1 [0]
Not in use [0]
4-20mA [3]
0
500
0
0
1 [0]
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
41312 (46312)
41314 (46314)
41310 (46310)
41316 (46316)
Flow rate res
Flow rate unit
Auto deriv. time
Derivation time
0.02 [4]
Unit/s [0]
On [1]
0.64
......................
......................
......................
......................
......................
......................
......................
......................
41400 (46400)
41402 (46402)
41404 (46404)
41406 (46406)
Display no of B
Display B-size
Batch printouts
Batch end mode
No [0]
No [0]
No [0]
Gross [1]
......................
......................
......................
......................
......................
......................
......................
......................
Appendix 1.
Set-up list, page 4.
Weight Indicator TAD 3
Batch parameters for TAD 3
Address: ........
Location/Notes: ..............................................................................................................
Progr. name: ................................. Ser. no.: ............................... Date: ....................
Activity no.: A ....
Activity type:
[0] Not used
[1] Weigh in
[2] Weigh out
[3] Dump
[4] Fill
[5] Timer
Weigh in / Weigh out (7-12 – 7-15)
Batching mode .........................................
Output no
.........................................
Coarse outp. no .........................................
Fine outp. no
.........................................
F. on during C. .........................................
Fine value
.........................................
Minus tolerance .........................................
Plus tolerance .........................................
Inflight factor
.........................................
Inflight value
.........................................
Wait time
.........................................
Pulsing time
.........................................
Timeout value .........................................
Ack. type
.........................................
Ack. input no
.........................................
Dump (7-16)
Output no
Low level
Wait time
Timeout value
Ack. type
Ack. input no
.........................................
.........................................
.........................................
.........................................
.........................................
.........................................
Fill (7-17)
Output no
Low level
High level
Wait time
Timeout value
Ack. type
Ack. input no
.........................................
.........................................
.........................................
.........................................
.........................................
.........................................
.........................................
[6] Timer w. outp
[7] Latch on
[8] Latch off
[9] Manual
[10] Pulse batch
Timer /
Timer w. output (7-18)
Output no
.......................................
Ack. type
.......................................
Ack. input no
.......................................
Latch on / Latch off (7-19)
Output no
.......................................
On during halt
.......................................
Ack. type
.......................................
Ack. input no
.......................................
Manual (7-19)
Print weight
Enter weight
.......................................
.......................................
Pulse batch (7-20 – 7-23)
Batching mode
.......................................
Output no
.......................................
Coarse outp. no
.......................................
Fine output no
.......................................
F. on during C.
.......................................
Fine value
.......................................
Minus tolerance
.......................................
Plus tolerance
.......................................
Inflight factor
.......................................
Inflight value
.......................................
Wait time
.......................................
Pulsing time
.......................................
Timeout value
.......................................
Ack. type
.......................................
Ack. input no
.......................................
Pulse input no
.......................................
No of decimals
.......................................
Unit
.......................................
Scale factor
.......................................
Appendix 2.
Batch parameters
Manuscript form
Technical Manual
Weight Indicator TAD 3
Appendix 3.
Declaration of Conformity
Technical Manual
Document no. 35184
Article no. 600 312 R10
© Vishay Nobel AB, 2011-05-11
Subject to changes without notice.
Vishay Nobel AB
Box 423, SE-691 27 Karlskoga, Sweden
Phone +46 586 63000 · Fax +46 586 63099
pw.se@vishaypg.com www.weighingsolutions.com
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertising