GS1650Mk3/v2 MULTI-IN TER VAL and MULTI

GS1650Mk3/v2 Multi-Interval Weight Indicator.
GS1650Mk3/v2
MULTI-INTERVAL and MULTI-RANGE
DIGITAL WEIGHT INDICATOR
MANUAL
Year 2000 Compliant - see Section 4 Calendar/Clock Option.
488 Church Street, Richmond, Victoria 3121 Australia
Phone: +61 3 9429 8396 Fax: +61 3 9429 8097
Email: info@gedgesystems.com.au
issue 03 EAA.4 August 1997
Copyright 1996/1997 Gedge Systems GS Systems Pty. Ltd. A.C.N. 005 647 209
GS1650Mk3/v2 Multi-Interval Weight Indicator.
PRODUCT VERSION NOTE
THIS MANUAL, ISSUE 03 AUGUST 1997, APPLIES TO THE MODEL GS1650Mk3/v2
SHIPPED AFTER AUGUST 1997 WHICH DISPLAYS THE SOFTWARE VERSION NUMBER
“EAA.4" WHEN POWER IS APPLIED.
SOME LOAD CELL MODELS HAVE A WEIGHTS AND MEASURES SPECIFIED
MINIMUM DEAD LOAD VALUE THAT MAKES THEIR OPERATION IN A
MULTI-RANGE MODE MORE PRACTICAL THAN IN A MULTI-INTERVAL MODE.
THE GS1650Mk3/v2 VERSION EAA.4 CAN BE PROGRAMMED TO OPERATE EITHER AS
A MULTI-INTERVAL INDICATOR OR A MULTI-RANGE INDICATOR.
Gedge Systems expressly disclaims all responsibility for the direct and indirect
consequences to each and every party whatsoever, in respect of the use or application of
this product or any other Gedge Systems product if it is used in any way whatsoever
beyond or outside the specified purpose for which it was supplied.
The contents, format and authorship of all material produced or
printed by any medium, by or on behalf of GS Systems Pty. Ltd.,
is the subject of strict proprietorship of and by
GS Systems Pty. Ltd., and cannot be copied, reproduced,
plagiarized or used in part or in whole either directly or
indirectly by any party whatsoever without the prior written
consent of GS Systems Pty. Ltd. This publication, all of its
GS Systems Pty. Ltd. A.C.N. 005 647 209 Copyright 1996/1997 Gedge Systems
issue 03 EAA.4 August 1997
Manual Contents - GS1650Mk3/v2 Multi-Interval Indicator
1
1 .1
1 .2
1 .3
1 .4
1 .5
1 .6
2
OPERATING THE GS1650Mk3/v2 1-1
About this Section
Introduction & General
Applying Power
Immediate Weighing
Acquire Zero
Delay
Delay then Acquire Zero
Normal Operation Displayed Messages
Indicator Lamps
Keyboard Controls
1-1
1-1
1-2
1-2
1-2
1-2
2 .11 Trouble Shooting.
General.
Clock Operation.
GS1650Mk3/v2’s Error Messages.
Serial Input Diagnostics.
Electrical Supply.
2-16
3
3-1
3 .1
3 .2
3 .3
3 .4
INSTALLING THE GS1650Mk3/v2. 2-1
2 .1
2 .2
2 .3
2 .4
2 .5
About this Section
2-1
Installation Steps.
2-1
Unpacking
2-1
Introduction to Setup and Calibration.
2-2
Device Number
2-2
Introduction.
Setting the Device Number.
2 .6 Digital Setup Settings.
2-3
2 .7 Setup Settings.
2-3
Resolution in display divisions.
Decimal Places.
Count By.
Update Rate.
Over Load.
Zero Track.
Standstill {not in motion}.
Push-button Disable.
Power Up.
Output.
Peripheral Output.
Intervals/Ranges.
Interval/Range Operation.
Dual Output.
Units.
Block Division Character.
Beginning and End Character.
Parity.
Special Performance.
Automatic Print.
Print Interval/Range Number.
2 .8 Weight Units Labels
2-6
2 .9 Load Cell Connection
2-6
General
Connection
2 .10 Weight Calibration
2-8
General
Weight Calibration Checklist - In Brief.
Weight Calibration Checklist - In Detail.
Load Cells & Creep & Loading Hints.
Digital Setup Settings for Weight Calibration.
Zero Out The Dead Load Offset
Span Calibration.
Fine Span Adjustment.
Linearizing the Weighing System.
Description and Settings.
Entering Linearity Corrections.
Multi-Interval/Range Settings & Setup.
Purpose of Multi-Interval/Range Weighing.
Multi-Interval versus Multi-Range Weighing.
Calculating Interval/Range Change Points.
Entering Interval/Range Limits.
Name Plate Marking.
Sealing the GS1650Mk3/v2
issue 03 EAA.4 August 1997
3 .5
3 .6
3 .7
3 .8
4
4 .1
4 .2
4 .3
5
5 .1
5 .2
5 .3
5 .4
OPTIONS-FIELD INSTALLED.
About this section
3-1
General
3-1
Option 02/03/05/06/07/08/09 Installation.
3-2
Serial Output Options 02, 05 and 09.
3-4
Introduction.
Applicable Digital Setup Settings.
Connector.
Baud Rate.
Formatting The Output.
Print key & Auto Print operation for P1/P2.
Print key & Auto Print operation for C1 - C3
Output Format.
Output Character/Protocol.
Serial I/O Option 07 & 08
3-8
Introduction.
Applicable Digital Setup Settings.
Connector.
Baud Rate & Mode Selection.
Communications/Control.
Clearing the Command Buffer.
Communication Language and Commands.
Parallel BCD Output Option 03
3-13
General.
Applicable Digital Setup Settings.
Specification
Analog Output Option 06.
3-14
General.
Dual Output Settings.
Applicable Digital Setup Settings.
Analog Output Connector.
Calibration.
Specification.
Resolution Comment
Customized Voltage Range.
Peripheral Output Option 01.
3-17
General.
Applicable Digital Setup Settings.
Installation of Option 01
User Connections for Setup Selection PO 01.n
User Connections for Setup Selection PO 01.A
Option 01 Inputs - Notes.
Connection to LCD Display Units GS1020/1025
OPTIONS-FACTORY FITTED.
About this section.
Battery Backed RAM Option BR1.
Calendar/Clock Option BR2.
Introduction.
YEAR 2000 COMPLIANCE
Setting the Time and Date.
Date/Time - Printed Formats.
4-1
4-1
4-1
TECHNICAL SPECIFICATION.
Basic Indicator.
Field Installed Options.
Factory Installed Options.
Ordering Guide.
4-1
5-1
5-1
5-2
5-2
5-2
Table of contents.
Manual Contents - Figures and Warranty
Table of Figures.
Fig.2-1 GS1650Mk3/v2 Front with Nameplate removed.
Fig.2-2 GS1650Mk3/v2 Rear Panel.
Fig.2-3 Standard Name Plate - Single Interval/Range
Fig.2-4 Standard Name Plate - Multi-Interval.
Fig.2-5 Multi-Range Name Plate with Example Markings
Fig.2-6 Serial Diagnostics Display
Fig.3-1 GS1650Mk3/v2 Rear Panel.
Fig.3-2 Top View of GS1650Mk3/v2 Motherboard.
Fig. 3-3 Analog Output Card - Option 06
Fig. 3-4 Part of Option 06 showing Serial Links.
Fig.5-3 Location of Option 01.
2-1
2-7
2-15
2-15
2-15
2-17
3-1
3-2
3-14
3-15
3-17
Warranty
W WARRANTY
W .1 Definition. In the following, Buyer shall mean the original purchaser of the equipment supplied by Gedge Sys tems. Seller shall mean Gedge Systems, the manufacturer of the equipment.
W .2 Extent. This express warranty shall extend between Buyer and Seller only and shall cover all claims and costs
during the warranty period between Buyer and Seller only, and, except for warranty of title, is in lieu of all other warranties, whether expressed or implied, including the implied warranties of fitness for a particular purpose and merchantability. Seller shall not be liable for any special, incidental or consequential damages resulting from a breach or alleged
breach of this warranty.
W .3 Warrants. The Seller warrants to the Buyer that the equipment shall be manufactured by good workmanship of
materials free of defect and that such equipment when used and installed in accordance with the Seller’s instruction manuals shall perform in accordance with the equipment’s specifications.
W .4 Repair/Replace/Exceptions. The Seller shall repair or replace at its discretion, free of charge, any equipment or option which is returned to its facility within twelve (12)months of shipment to the Buyer, and which upon examination proves to be a manufacturing defect.
The warranty does not apply to any equipment that has been :A. Repaired or modified by other than a duly authorized repair facility.
B. Installed or adjusted not in accordance with the equipment’s manual.
C. Mishandled, abused or which in the Seller’s sole judgment has been exposed to an environment
for which the equipment was not designed.
D. Operated outside of its enclosure or operated in an enclosure other than as supplied by
the manufacturer.
W .5 Shipping Costs. This warranty applies to equipment received at the Seller’s facility, freight prepaid by the
Buyer, and does not include return freight to the Buyer’s premises.
Table of Figures and Warranty
issue 03 EAA.4 August 1997
GS1650Mk3/v2 Multi-Interval Weight Indicator.
1 OPERATING THE GS1650Mk3/v2
An example can be used to show the benefit of
MULTI-INTERVAL and MULTI-RANGE weighing:-
1 .1 About this Section
On a Weights and Measures approved 3000 division 80t
capacity weigh bridge, a single-range or single-interval
weight indicator could ONLY be used to weigh in 50kg
increments. Thus all weights would only be known to within
50kg. By comparison, the GS1650Mk3/v2 can be set up to
weigh automatically in THREE INTERVALS or THREE
RANGES which, for this example, could be 10kg increments
to 30t, 20kg increments for over 30t to 60t and 50kg
increments for over 60t to 80t. Small weights would be
known to within 10kg - a resolution improvement of FIVE
FOLD!
This section describes the operation of the GS1650Mk3/v2
using the front panel keyboard. Operation of the
GS1650Mk3/v2’s optional outputs is contained in sections
3 “Options - Field Installed” and 4 “Options - Factory
Fitted.”
1 .2 Introduction & General
The
GS1650Mk3/v2
is
a
high
precision
MULTI-INTERVAL and MULTI-RANGE microprocessor
based weight indicator designed for use in a wide range of
industrial weighing applications.
The major advantage of using the GS1650Mk3/v2 in either
its MULTI-INTERVAL or MULTI-RANGE mode is its
ability to display small weight increments on trade approved
high capacity platforms and bridges.
The MULTI-INTERVAL mode of operation has the
advantage of being able to accurately display small NET
weights in small weight increments even with very heavy
TARE values. In addition, as the weight on the scale
increases and decreases, the GS1650Mk3/v2 can
automatically change the weighing range and increment size
to provide the greatest accuracy. This method of operation
generally requires Load Cells with a Weights and Measures
approved Minimum Dead Load Return value which is
smaller than that required for MULTI-RANGE weighing.
The GS1650Mk3/v2 can also be programmed to operate in a
MULTI-RANGE mode. This is useful on installations not
requiring the ability to weigh small masses on large tare
values OR on installations not requiring the ability to reduce
the range and increment size on decreasing weight. This
method of operation generally enables the use of Load Cells
having a Weights and Measures approved Minimum Dead
Load Return value larger than that required for
MULTI-INTERVAL weighing.
issue 03 EAA.4 August 1997
If the GS1650Mk3/v2 is used in it’s MULTI-INTERVAL
weighing mode rather than it’s MULTI-RANGE weighing
mode, further advantages are possible in installations
weighing small net weights with large tare values. ONLY
MULTI-INTERVAL Indicators are permitted to
automatically reduce the weight increment size when a tare
is acquired. Using the above example:A truck of 75t could be driven onto the weighbridge. Its
weight would be displayed to a resolution of 50kg as the
weight falls within the highest range. The truck could then
be “tared off” for a net display of zero. The
GS1650Mk3/v2 operating in the MULTI-INTERVAL mode
would automatically switch to the lowest weighing interval
with the smallest weight increment size of 10kg. Material
could then be filled at a weighing resolution of 10kg! All
MULTI-RANGE indicators and SINGLE RANGE indicators
would remain in the highest weighing range with the
weighing increment remaining on 50kg.
In this example, the MULTI-INTERVAL method of
operation provides a resolution improvement of FIVE
FOLD over even the MULTI-RANGE method of operation.
An extensive range of optional outputs enables the
GS1650Mk3/v2’s use with BCD or Serial printers,
computers and controllers. Full details of these options are
included in sections 3 and 4 of this manual.
1-1
GS1650Mk3/v2 Multi-Interval Weight Indicator.
1 .3 Applying Power
1 .4 Normal Operation Displayed Messages
When power is applied to the GS1650Mk3/v2 the display
first shows the Software Version in the form EAA.4 for 1
second followed by a hardware configuration message in the
form Con 02 also for 1 second. Provided that the
GS1650Mk3/v2 found no memory or configuration errors on
power up, the GS1650Mk3/v2 will then operate in one of
the following 4 modes, which will depend upon the settings
established during installation.
The GS1650Mk3/v2 normally displays weight. Messages
are sometimes displayed during normal operation as a
reminder and during abnormal operation as an error signal.
1 .3 .1 Immediate Weighing
When power is applied, following the messages described
above, the GS1650Mk3/v2 allows the operation of the
display to be tested by illuminating all lamps and display
digits, followed by blanking the lamps and the display.
After this sequence, weight is displayed.
1 .3 .2 Acquire Zero
The purpose of this setting is to ensure that the weight
indicator always “powers up” with a zero gross weight
display. When power is applied, following the messages
described above, the display will show -0- if the GROSS
weight input is not at “True Zero”. If the GROSS weight is
at Zero, the indicator will cycle through the display test by
illuminating all lamps and display digits then blanking the
lamps and the display digits. After this, weight will be
displayed. If -0- remains on the display because the input
weight is not Zero, the ZERO key must be pressed to
acquire zero and commence weighing. If the weight on the
scale exceeds the allowed zero range of 4% of capacity then
weighing cannot commence until the weight is removed. If
there is a fault the GS1650Mk3/v2 will show a message,
which can include an off scale or overweight message if the
weight on the scale is over the scale’s capacity.
Normal operation messages are :-
888888
Cold
-0——
Display Test following the TEST key.
The indicator is warming up.
Key ZERO to commence weighing.
Weight exceeds the scale’s capacity.
Other messages that require service assistance are described
in the Installation section of this manual.
1 .5 Indicator Lamps
The function of each of the GS1650Mk3/v2’s six lamps is
described in the table to the right.
GS1650Mk3/v2’s Lamps.
LAMP
DESCRIPTION
DISPLAYED section.
GROSS
Display shows gross weight.
NET
Display shows net weight which is the gross
weight minus the tare weight.
TARE
Display shows the tare weight for 3 seconds
then automatically displays net.
NOTE:- Trade Authorities require a positive
gross weight acquired as tare to be displayed
with a minus sign.
INTERVAL section.
1 .3 .3 Delay
The purpose of this setting is to make sure that the weight
indicator always “powers up” after a sufficient warm up
time to ensure a stable weight display. When power is
applied, following the messages described above, the display
will show cold until either the display indication has been
continuously stable for 30 seconds or until 30 minutes has
expired, whichever is the sooner. The indicator will not
show an overweight or off scale message if the scale is
overweight or off scale until expiry of the warm up time.
1 .3 .4 Delay then Acquire Zero
This method of operation is required by Australian
Weights and Measures Authorities. The purpose of this
setting is to make sure that the weight indicator only
displays weight after a sufficient “warm up” time to ensure
a stable weight display and to ensure that the weight
indicator always commences weighing with a gross weight
display of zero
When power is applied, the GS1650Mk3/v2 first goes
through the power up sequence as described in Delay above
followed by the sequence as described in Acquire Zero
above.
1-2
1 one
2 two
3 three
When the GS1650Mk3/v2 is set up to
operate in its MULTI-INTERVAL or
MULTI-RANGE mode, these lamps indicate
which weighing interval/range is in use.
Interval or Range selection is entirely
automatic.
Lamp 1 will always be ON if the
GS1650Mk3/v2 is installed to operate in one
interval/range only.
The lamp that is ON will FLASH if the scale
is in MOTION.
The ZERO, TARE and PRINT keys have no
effect if any of the INTERVAL lamps are
flashing to signify that the scale is in motion.
1 .6 Keyboard Controls
The table on the following page describes the normal
weighing use of each of the GS1650Mk3/v2’s 7 front panel
keys. For the keys’ use during installation and calibration
refer to section 2 of this manual.
issue 03 EAA.4 August 1997
GS1650Mk3/v2 Multi-Interval Weight Indicator.
KEY
PRINT
ZERO
GS1650Mk3/v2’s Front Panel Keyboard.
FUNCTION
COMMENTS
Prints the weight on a printer The GS1650Mk3/v2 will only send weight information to a Printer or
Computer following a PRINT key operation IF the scale was NOT IN
or sends the weight to a
MOTION at the time the key was operated.
computer. The
GS1650Mk3/v2 momentarily
blanks the display to signify Before operating the PRINT key make sure that none of the “INTERVAL”
that the data to be printed or lamps is flashing. (The GS1650Mk3/v2 flashes the current INTERVAL
transmitted was ACTUALLY lamp if the scale is in motion. )
sent. If the display does not
momentarily blank following The type of print operation or serial output that occurs following a PRINT
operation of the PRINT key, key will depend upon the way that the GS1650Mk3/v2 was installed, as
the weight data was not sent well as the Options that are fitted.
to the Computer or Printer.
The GS1650Mk3/v2 will not zero the gross weight value unless the gross
Zeros the gross weight and
weight or net weight is displayed, the scale is within its weighing capacity
blanks the display for
and is not in motion. In addition to this, the accumulated zero track value,
2 - 3 seconds on saving the
together with the keyed zero value, must not exceed 4% ( plus/minus 2% )
new zero setting.
of the scale’s weighing capacity. The zero value is ALWAYS retained on
power failure, but the zero track value is ONLY retained on power failure if
If the GS1650Mk3/v2 is
displaying NET weight when BATTERY BACKED MEMORYoption BR1 or BR2 is fitted. Otherwise
the zero track value is cleared on power up.
the ZERO key is operated,
AND the GROSS weight is
In the MULTI-RANGE mode, the GS1650Mk3/v2 will automatically select
within the range that can be
“zeroed”, the GS1650Mk3/v2 the lowest weight range following the ZERO key operation. If the
GS1650Mk3/v2 is operated in the MULTI-INTERVAL mode it will already
will clear the TARE weight
be displaying weight in the lowest weighing range.
and switch to a display of
GROSS weight after saving
(1) NOTE:- The GS1650Mk3/v2 does not transmit serial data via any of
the new zero setting.
its option cards during this 2-3 second “blank display” period.
Additionally, serial inputs may be missed during this time. Controllers,
Computers and Remote Displays/Devices using the Indicator’s serial output
or serial I/O must take this into account.
Cancels out the empty weight The TARE key only operates while the net or gross weight is displayed, the
of a container by acquiring the scale is not in motion and the weight is within the scale’s capacity.
Provided that the GS1650Mk3/v2 has been installed with its “overweight”
GROSS weight as a TARE
weight. A NET weight of zero setting ON, the GS1650Mk3/v2 will ONLY allow a tare value of zero or
greater to be acquired. Acquiring a tare of zero has the effect of clearing
is then displayed.
the tare value. When the GS1650Mk3/v2’s “overweight” setting is OFF, a
negative tare weight may be acquired. The tare weight is ONLY retained
on power failure if option BR1 or BR2 is fitted. Otherwise the tare weight
is cleared on power up. In the MULTI-INTERVAL mode, the display will
show Net weight in the lowest weighing interval with the smallest
increment size. In the MULTI-RANGE mode, the display will show weight
in the same weighing range and increment size that was in effect when
TARE was operated.
Switches the display to the Gross weight. For MULTI-INTERVAL weighing, the weighing interval and
weight increment size is automatically selected and changed as the weight increases or decreases.
(1)
TARE
DISPLAY
GROSS
DISPLAY
NET
For MULTI-RANGE weighing, the weighing range and weight increment size is automatically selected and
changed as the weight increases but is NOT changed on decreasing weight.
Switches the display to the Net weight. For MULTI-INTERVAL weighing, the weighing interval and
weight increment size is automatically selected and changed ON THE BASIS OF THE NET WEIGHT as
the NET weight increases or decreases, comencing with the smallest interval/increment size at a NET
display of zero.
For MULTI-RANGE weighing, the weighing range and weight increment size is automatically selected and
changed ON THE BASIS OF THE GROSS WEIGHT as the NET weight increases but is NOT changed on
decreasing weight. Providing the GS1650Mk3/v2 has been installed to operate with more than one range,
the indicator will automatically clear the tare value and display a GROSS weight of zero in lowest weighing
range and increment size whenever the NET display is below zero AND the GROSS weight is not in
motion and ZERO.
GS1650Mk3/v2’s Front Panel Keyboard.
issue 03 EAA.4 August 1997
Note (1) added November ‘96.
1-3
GS1650Mk3/v2 Multi-Interval Weight Indicator.
KEY
DISPLAY
TARE
FUNCTION
COMMENTS
Displays the TARE weight for MULTI-INTERVAL & MULTI-RANGE NOTE:- For numeric
consistency the increment value of the tare weight displayed will be the
3 seconds only and then
same as the increment value of the Net or Gross weight whichever was
displays the NET weight.
displayed when the Display Tare key was operated.
A tare weight of zero is NOT displayed unless the GS1650Mk3/v2’s
“overweight” setting is OFF.
To comply with weighing authorities’ codes of practice, tare weights are
displayed with a minus sign. (Unless the tare was acquired below zero in
which case the tare weight is displayed as positive.)
TEST/CLEA Tests the operation of the lamps and display by turning all the lamps ON and displaying all 8’s and then
R TARE turns all the lamps OFF with a blank display. Clears the TARE weight and resumes weighing with the
GROSS weight displayed.
1-4
Note (1) added November ‘96.
issue 03 EAA.4 August 1997
GS1650Mk3/v2 Multi-Interval Weight Indicator.
Fig.2-1 GS1650Mk3/v2 Front with Nameplate removed.
2 INSTALLING THE GS1650Mk3/v2.
2 .3 Unpacking
2 .1 About this Section
The shipping complement for the basic GS1650Mk3/v2
comprises:-
This section describes the installation and calibration of the
basic GS1650Mk3/v2 Indicator. A paragraph, “Trouble
Shooting”, is contained within this section describing each
of the GS1650Mk3/v2’s error messages as well as a
paragraph for serial input diagnosis and a note concerning
mains power supply. This section 2 should be read in
conjunction with sections 1 “ O p e r a t i n g t h e
GS1650Mk3/v2", 3 ”Options - Field Installed" and 4
“Options - Factory Fitted” .
a) GS1650Mk3/v2 Weight Indicator.
b) Power Cord for Australian 240VAC supply.
c) GS1650Mk3/v2 Operating & Installation Manual.
d) Weight Units Label Kit.
e) CAL key enabling tool.(Small plastic rod)
f) 9 pin D load cell cable connector.
2 .2 Installation Steps.
Following is a check list of the steps required for the
installation and calibration of the GS1650Mk3/v2.
1)
2)
3)
4)
5)
6)
7)
8)
9)
10)
11)
12)
13)
Unpack. Check supply voltage.
Go to step 5 if there are no options.
Set the Device Number for Serial Options.
Install options.
Set time/date if BR2 Calendar/Clock is installed.
Select & Enter Digital Setup settings..
(Set:- Zero Track OFF, 1 Interval, Interval mode.)
Select/attach units label to front of GS1650Mk3/v2.
Connect load cell/s.
Zero the scale’s dead load input.
Use weights to span calibrate the indicator.
If LINEARIZATION is required, adjust it now.
If MULTI-INTERVAL/RANGE is required, set it now.
If ZERO TRACK is to be used, set it now.
Replace and seal the nameplate.
issue 03 EAA.4 August 1997
Check and ensure all of the above items are included in
your shipment. Check the GS1650Mk3/v2 rear panel and
ensure the operating voltage matches the power in your
area. You may need to change the power plug on the mains
cable supplied - this should ONLY be carried out by a
qualified electrician - care must be taken to properly
connect the EARTH wire. Only proceed if all of the above
is correct.
EITHER DISCONNECT OR OTHERWISE
MAKE SAFE ALL EXTERNAL DEVICES
CONTROLLED BY THE GS1650Mk3/v2’s
BEFORE ANY CALIBRATION OR SETUP
PROCEDURE.
2-1
GS1650Mk3/v2 Multi-Interval Weight Indicator.
2 .4 Introduction to Setup and Calibration.
DOWN Changes the displayed setup setting or decreases
the displayed value.
The GS1650Mk3/v2 provides simple and fast installation by
a process which is largely automatic, using ONLY the front
panel keys for calibration and setup. Access to the interior
of the GS1650Mk3/v2 is NOT required.
All CALIBRATION and setup procedures require ONLY
the removal of the sealable front panel nameplate. On
removal, a SETUP key is accessible together with
alternative function descriptions for each of the 7 keys used
during installation.
UP Changes the displayed setup setting or increases the
displayed value.
ACCEPT When a menu selection is displayed, enters that
particular setup procedure. Is also used within menu
procedures to “accept” settings.
SIGN Used to change the sign (plus/minus) of the
linearity correction.
NOTE:- As an added security measure to prevent
unauthorized tampering with the GS1650Mk3/v2’s settings,
the SETUP key is INOPERATIVE unless a tool is
inserted into the hole identified on the front panel near
the SETUP key and is used to depress the switch within
the GS1650Mk3/v2. The SETUP key only remains
operative while the internal switch is depressed. In the
following the use of the SETUP key enabling tool is not
referred to but it MUST nevertheless be used to enable
the SETUP/PREV key.
The installation function of the keys is :-
SETUP/PREV Places GS1650Mk3/v2 in the setup mode
gaining access to the GS1650Mk3/v2’s installation menu.
When the SETUP/PREV key is first pressed the
GS1650Mk3/v2’s lamps flash and the first menu selection,
“SETUP”, is displayed. Keying NEXT sequences the
display forwards through the installation menu selections.
Keying
SETUP/PREV shows the previous menu
selection. The menu selections and the actual way they are
displayed are:SEt UP
d LOAd
L LOAD
Lin 1
Lin 2
Lin 3
IdEnt
dAtE
S diAG
AdJUST
Clr.AdJ
Int L1
1.
Int L2
2.
2 .5 Device Number
2 .5 .1 Introduction.
The GS1650Mk3/v2 includes a two digit “identity”, called
a device number, which can be entered on installation and
used during serial output or serial input/output to identify
the GS1650Mk3/v2. The GS1650Mk3/v2 is shipped with
the device number set to “01". This number will be
satisfactory for most single indicator applications.
A device number is NOT REQUIRED unless the
GS1650Mk3/v2 is fitted with a serial option board.
A device number in the range 1 to 99 MUST BE
ENTERED for computer control of the GS1650Mk3/v2
using serial Input/Output Options.
For serial output, certain numbers have special functions.
They are:-
Enter digital setup settings & Limit Interval 3.
Calibrate the dead load input.
Calibrate the live load (span) input.
Enter Linearity 1 settings.
Enter Linearity 2 settings.
Enter Linearity 3 settings.
Enter the Indicator’s Identity (device number).
Enter the time and date ( if Option BR2 fitted ).
Display serial diagnostics.
Make a fine adjustment to the span setting.
Clear the fine span adjustment.
Set the Interval/Range Limit for Interval/Range
00 Disables the device number - no value is transmitted.
99 A 5 digit rolling number counter is transmitted instead
of the actual device number. The counter is reset to 1 on
displaying the device number. At each print operation, the
counter is incremented by 1 until 65535 is reached, when
the counter rolls over to 1.
Set the Interval/Range Limit for Interval/Range
2 .5 .2 Setting the Device Number.
NEXT Key to display menu selections. Also used within
certain menus to select the next item or setting.
SAVE/EXIT Depending upon the particular procedure
either saves the current settings and returns the
GS1650Mk3/v2 to the weighing mode or exits the procedure
without making any changes. (see the descriptions of the
menu procedures.)
The device number is always retained on power failure. The
rolling print counter will be reset to 1 on power failure
unless the GS1650Mk3/v2 is fitted with option BR1 or
BR2.
Key SETUP to display the “identity” menu selection
IdEnt then key ACCEPT . The GS1650Mk3/v2 will
display the device number as dn0001. The keys UP ,
DOWN and SELECT DIGIT can be used to change the
number, and SAVE/EXIT keyed to save the setting and
return to the weighing mode.
SELECT DIGIT Used to set the value by which the keys
UP and DOWN change the displayed setting. The digit to be
changed flashes.
2-2
issue 03 EAA.4 August 1997
GS1650Mk3/v2 Multi-Interval Weight Indicator.
2 .6 Digital Setup Settings.
The digital setup settings are used to give the
GS1650Mk3/v2 its operating identity. During digital setup,
the GS1650Mk3/v2 displays easy to remember symbols for
each setting and, in most cases, the actual setting value.
The table below lists each of the digital settings:Resolution in display divisions.
Decimal Places.
Count By.
Update Rate.
Overload.
Zero Track.
Standstill {not in motion}.
Push-button Disable.
Power Up.
Output.
Peripheral Output.
Intervals/Ranges.
Interval/Range operation.
Dual Output.
Units of Measure
Block Division Character.
Beginning and End Character.
Parity.
Special Performance.
Automatic Print.
Print Interval/Range Number.
d25000
dP0.0000
Cb 5
UP 10
OL OFF
Otr 1d
S 3d
Pd OFF
Pu. g
out.P1
PO 01.n
Int 3
rAngE
do On
Un 03
bd 06
bE 06
PA E
SP C3A
AP On
Pr OFF
Select and write down the required settings. Then enter
them by keying SETUP to display the menu selection
“SEt UP” then ACCEPT to proceed. The first setup
selection will be displayed. The keys NEXT and
SETUP/PREV can be used to display each setup. The
keys UP, DOWN and SELECT DIGIT can be used to
display and change settings. Key SAVE/EXIT at any time
to save the settings and resume normal weighing.
2 .7 Setup Settings.
Following are each of the digital setup settings, including
descriptions, display examples and the range of available
settings.
2 .7 .1 Resolution in display divisions.
d 8000
Display resolution in display divisions. Adjustable 100 to
25000 divisions in 100 division steps.
NOTE 1:- For MULTI-INTERVAL/RANGE operation this
value multiplied by the Count By setting will always be the
full capacity of the installation.
In MULTI-INTERVAL/RANGE applications this setting is
used as “a setting device” having little real weighing
significance. For example, in an 80t weigh bridge
application to weigh in 10kg, 20kg and 50kg increments this
setting is set to 8000 ( 8000 x 10kg = 80t ) even though
none of the weight intervals will be set up to exceed 3000
divisions. (see MULTI-INTERVAL/RANGE setup for
more details.)
issue 03 EAA.4 August 1997
NOTE 2:- The GS1650Mk3/v2 display contains 6 digits
and the “bar” of digit 6 is used to display minus. This is
not a limitation when displaying gross weight. However, it
should be considered if net or tare are to be displayed. If
the displayed net weight exceeds -99999 the
GS1650Mk3/v2 will automatically switch the display to
gross weight. If the displayed tare exceeds -99999 the
GS1650Mk3/v2 will display the correct numeric value
dropping the minus sign.
2 .7 .2 Decimal Places.
dP0.0000
Display decimal places. Adjustable None to 0.0000.
Decimal places cannot be selected if the Count By setting is
10 or greater.
NOTE:- The number of decimal places does not vary during
MULTI-INTERVAL/RANGE operation.
2 .7 .3 Count By.
Cb 5
Minimum display steps regardless of decimal place.
Adjustable 1, 2, 5, 10, 20 or 50.
NOTE:- For MULTI-INTERVAL/RANGE operation, this
setting of 1 to 50 is the count by setting for interval one.
The count by settings for intervals two and three are
automatically set to the next count by settings. For
example, a count by setting of 1 automatically selects 2 and
5 for Intervals two and three. A count by setting of 10
automatically selects 20 and 50 for Intervals two and three
and so on.
2 .7 .4 Update Rate.
UP 10
Weight update rate per second achieved by averaging the
A/D converter input. Adjustable 10/s, 5/s, 2.5/s, 1.2/s and
0.62/s. A rate of 2.5 per second is recommended for most
static weighing applications unless speed is critical, when 10
or 5 per second should be selected.
2 .7 .5 Over Load.
OL 9d
Number of display divisions above gross capacity at which
the display shows “——” to indicate that the scale is over
capacity. Adjustable Off {104%}, 1d, 2d and 9d.
For “non-trade” weighing, where negative gross values may
be acquired as tare, this setting should be turned Off.
NOTE:- For MULTI-INTERVAL/RANGE operation the
actual weight that coincides with the overload setting 1d, 2d
or 9d will be the Count By value of the highest interval ( 2
or 3 ) times the setting. For example, in a three interval
installation, with Count By settings of 2kg, 5kg and 10kg,
and an Overload setting of 9d, the overweight display
“——-” will occur at 9d x 10kg ( 90kg ) above the full
capacity.
2 .7 .6 Zero Track.
0tr 1d
Number of display divisions about gross ZERO in which
automatic zero maintenance occurs provided that the input
is not in motion. Adjustable Off, 0.5d, 1d and 3d. This
setting must be 0.5d for trade weighing applications.
2-3
GS1650Mk3/v2 Multi-Interval Weight Indicator.
2 .7 .7 Standstill {not in motion}.
S 3d
The scale is In motion if the change in the gross weight
exceeds the standstill setting over the motion period. Period
automatically set to 1 second for update rates of 10/s and
5/s, 2 seconds for update rates of 2.5/s and 1.2/s, otherwise
set to 4 seconds.
Upon detecting a motion condition, an internal motion flag
is set and the interval lamp flashes to indicate motion. The
motion flag, once set, is not cleared until the motion period
has again expired with no motion having been detected.
Adjustable 0.5d/second, 1d/second and 3d/second. This
setting must be 0.5d/second for trade weighing
applications.
2 .7 .8 Push-button Disable.
Pb OFF
The GS1650Mk3/v2’s front panel keys may be selectively
disabled during normal weighing operations. Keys disabled
are :At.n.t
Acquire Tare, Display Net and Tare.
A-OAcquire Zero.
CtrE
Reset. (Test/Clear Tare)
Pr
Print.
All
All.
OFF
None.
2 .7 .9 Power Up.
Pu. g
When power is first applied the GS1650Mk3/v2 can be set
to immediately weigh, await acquisition of zero, await warm
up or a combination of these.
g
Immediately weigh.
-0Acquire zero
d
Delay, await warm up.
d-0Await warm up then acquire zero.
This settingis required for trade weighing
applications.
2 .7 .10 Output.
out.P1
This setting selects the output for a range of options. The
Options Section 3 of this manual fully describes the settings
which are generally :bcd
BCD option 03.
An
Analog option 06.
P1 - C3 Serial output options 02/05/09.
io1
Serial input/output options 07/08.
AdP
A & D compatible seral print key output.
AdS
A & D compatible serial stream output.
(1)
(1)
(3)
(2)
(2)
NOTE 1: If the dual output setting is ON, these two
selections (bcd & analog) are not displayed.
NOTE 2: If AdP or AdS selected set the following settings:Units - 01, 02 or 03 for Kg, g or t.
Parity - Has no effect - is always EVEN for AdP/S.
Auto Print - Has no effect for AdP/S.
Block Divide/Beginning&End - Has no effect.
NOTE 3 :- The GS1650Mk3/v2 does not transmit serial
data via any of its option cards during a 2-3 second “blank
display” period following a ZERO key operation.
Additionally, serial inputs may be missed during this time.
Controllers, Computers and Remote Displays/Devices using
the Indicator’s serial output or serial I/O must take this into
account.
2-4
2 .7 .11 Peripheral Output.
PO 01.n
The GS1650Mk3/v2 can be fitted with Option01 which
provides a proprietary 62.5kbaud balanced line serial output,
able to be transmitted up to 1,000m to a range of Gedge
Systems’ remote displays and set point controllers.
Alternatively, the GS1650Mk3/v2 can be connected to one
of several Gedge Systems’ small sized LCD display
repeaters for situations where either a local display repeater
is needed or where panel space is limited. This setting
selects the type of output for these peripherals as well as
selecting the inputs from them.
NOTE:- Certain features are NOT AVAILABLE if the
setting “dual outputs” is ON - see dual outputs below for
details.
PO 01.n- Option 01 “normal” output with inputs for
PRINT, TARE and display GROSS.
PO 01.A Option 01 type “A” output. Instead of providing
a serial output the Option 01 card provides a
signal when the scale is at “centre of zero”.
Key inputs are ZERO, TARE and PRINT.
POLcd.1 LCD output for connection to GS1020 and
GS1025 LCD displays with ZERO key input.
POLcd.2 LCD output for connection to GS1020 and
GS1025 LCD displays with TARE key input.
2 .7 .12 Intervals/Ranges.
Int 3
The GS1650Mk3/v2 can automatically operate in a
MULTI-INTERVAL/RANGE mode. This setting selects
the number of intervals/ranges as one, two or three. (The
description displayed for this setting is always “Int” even if
multi-range operation is selected in the next setting.)
NOTE:- This setting should initially be set to one during
calibration. The MULTI-INTERVAL/RANGE setup
procedure includes instructions on when to change this
setting to two or three.
2 .7 .13 Interval/Range Operation.
rAngE
This sets the GS1650Mk3/v2’s method of operation as
MULTI-INTERVAL ( “intEr” is displayed ) or as
MULTI-RANGE ( “rAngE” is displayed ). During
calibration, this should be set for MULTI-INTERVAL
operation. The MULTI-INTERVAL/RANGE setup
procedure includes instructions on when to change this
setting to MULTI-RANGE if required.
2 .7 .14 Dual Output.
do On
The dual output setting allows the GS1650Mk3/v2 to be
fitted with an Option 06 Analog Output AND any one of
the Gedge Systems Optional Serial Cards in addition to an
Option 01 Peripheral Output Option. The GS1650Mk3/v2
can then provide SIMULTANEOUS Analog and Serial
Output (or Serial I/O) as well as inputs and outputs from a
range of Gedge Systems remote displays, printers and set
point controllers.
When this setting is ON, analog output via Option 06 is
automatically selected. The output selection on the
preceding page will then ONLY display Serial Selections
(bcd output is not available as a “dual output”). The serial
output required in addition to analog output should be
chosen using the “output” setting. If this setting is OFF,
dual outputs are not available and any one of the single
outputs listed on the preceding page can be selected.
issue 03 EAA.4 August 1997
GS1650Mk3/v2 Multi-Interval Weight Indicator.
When dual outputs are selected, certain limitations apply to
the peripheral outputs. They are:Option 01 “normal” setting the display GROSS input is not
available.
Option 01 type “A” setting the ZERO output and PRINT
input are not available.
None of the LCD outputs are available.
Un 01
2 .7 .15 Units.
Units of measure for the serial printer output options
02/05/09 format P1/P2.
#
Units #
Units
01
kg
06
lb t
02
g
07
oz t
03
t
08
N
04
lb
09
kN
05
oz
10
none
NOTE: “kg” is output as “Kg” if Serial Output type AdP or
AdS has been selected. Units settings 04 to 10 inclusive are
output as “Kg” if AdS or AdP type is selected.
2 .7 .16 Block Division Character.
bd 06
Block division character for the serial output options
02/05/09. Applicable only to output formats P1 to C3.
#
CHARACTER
HEX
01
CR
0D
02
CR LF
0D 0A
03
CR LF LF
0D 0A 0A
04
(,)
2C
05
(*)
2A
06
nothing
07
(space)
20
NOTE :- ASCII characters are denoted by ( ). This setting
has no effect for output type settings of AdP or AdS.
2 .7 .17 Beginning and End Character.
bE 06
Characters transmitted at the beginning and end of a serial
output transmission for options 02/05/07/08/09.
Note :- ASCII Character denoted by ( ).
#
01
02
03
04
05
06
07
08
09
10
BEGINNING
CHAR.
HEX.
nothing
nothing
nothing
STX
02
STX
02
STX
02
(B)
42
nothing
([)
5B
nothing
CHAR.
CR
CR LF
CR LF LF
CR
CR LF
ETX
(E)
(,)
(])
CR FF
ENDING
HEX.
0D
0D 0A
0D 0A 0A
0D
0D 0A
03
45
2C
5D
0D 0C
2 .7 .18 Parity.
PA E
Each 10 bit serially transmitted word contains a start and
stop bit and an 8 bit character. The 8 bit character
comprises 7 bits of ASCII data and an 8th bit {b7} which is
user configurable. The 8th bit may be set as an Odd or Even
parity bit or it may be set as unconditionally 1 or 0.
Adjustable d {odd}, E {even}, 1 {one} or 0 {zero}.
NOTE 1 :- When the serial Input/Output option 07 or 08 is
used the GS1650Mk3/v2 expects to receive words whose
8th bit {b7} is set as even parity. The GS1650Mk3/v2 will
not recognize input commands of incorrect parity.
NOTE 2 :This setting has no effect for output type
settings AdP or AdS. For these settings EVEN PARITY
is ALWAYS automatically set for output.
2 .7 .19 Special Performance.
SP-C3A
SP-C3A. Select this setting for Weights and Measures
Applications.
› C3 output format contains displayed weight and Tare.
› Printed values of Gross - Tare = Net do not always agree.
To meet Weights and Measures Requirements the values of
Gross, Tare and Net will be printed or transmitted to the
highest possible accuracy and in the proper weight
increment size. This may result in the printed value for Net
not equalling the printed value of Gross minus Tare. The
Net value printed will, however, be to the highest accuracy
while satisfying the Weights and Measures rules. Numeric
agreement IS NOT required by Australian weights and
Measures.
For the continuous serial output stream “C3”, only the
displayed weight and the tare weight will be inserted into
the serial output string. The weight which is not displayed,
whether it be net or gross, will have its field padded with
ampersands “&”. In this way the issue of numeric
agreement does not apply as the receiving computer will
make the calculation to arrive at the “missing” value.
SP-C3n. Select this setting for use with Gedge Systems’
Printers and Non-Trade Applications requiring numeric
agreement of G - T = N.
› C3 output format contains G, T and N and they agree.
› Printed values of Gross - Tare = Net always agrees
provided they are in the same interval size.
› Numeric agreement will not always occur in
Multi-Interval operation.
The GS1650Mk3/v2 manipulates the tare weight’s rounded
value to reach numeric agreement with the precisely
calculated net weight. Therefore, the tare value transmitted
in the serial string (and printed) may occasionally change by
one division due to the requiremnt to maintain numeric
agreement with the precisely calculated gross and net
weights. The stored internal tare value is never changed.
NOTE:- This setting has no effect for output type settings
AdP or AdS.
issue 03 EAA.4 August 1997
2-5
GS1650Mk3/v2 Multi-Interval Weight Indicator.
2 .7 .20 Automatic Print.
AP On
The GS1650Mk3/v2 can be set to automatically print
following a proper weighing cycle. For the Auto Print to
operate, the weighing cycle MUST be as follows:
STILL and ZERO (empty with no motion), IN MOTION
(as the mass is applied), STILL and NOT ZERO (weight
steady with the mass on the scale). The GS1650Mk3/v2
will now PRINT for settings P1 or P2 or will insert a
PRINT code “P” in the Computer output string for settings
C2 or C3. Adjustable On or OFF .
NOTE: Only effective for serial output settings P1, P2,
C2 or C3.
2 .7 .21 Print Interval/Range Number.
The GS1650Mk3/v2 can be set to include
weighing interval/range ( 1, 2 or 3) as part
output string for Printers and Computers.
formats for details.) Adjustable On or OFF .
P.In OFF
the current
of its serial
(see output
2 .8 Weight Units Labels
The GS1650Mk3/v2 front panel is printed with the unit of
measure “kg”. A kit of self adhesive labels is supplied for
lb, g, N, kN, oz, oz t, lb t, t and a blank label. Select and
apply the appropriate units label.
2 .9 Load Cell Connection
2 .9 .1 General
High power radio transmitters in factories and vehicles is
making the use of proper load cell installation techniques
MUCH more important than it has been in the past. Failure
to strictly follow the installation techniques provided in this
manual for the load cell and any options WILL render the
installation unacceptably sensitive to interference and will
void the warranty.
Before connecting the load cell ensure that the jack screws
at the load cell connector on the rear of the indicator have
star washers beneath them and that they are screwed up
tight. Also ensure that the screws securing the rear panel to
the cover are also fitted with star washers and that they are
screwed up tight.
Ensure that the entire load cell cable has shield continuity
including continuity through any junction boxes which must
be of metal construction. A high quality BRAIDED shield
cable must be used.
Also ensure that the shield is NOT grounded at the load cell
end, although, in some situations, a ground at the load cell
end has been found to diminish interference. Do not
proceed with the installation until the load cells have been
properly wired and installed.
2 .9 .2 Connection
Load cell connection to the GS1650Mk3/v2 is via a rear
mounted 9 pin D male connector and mating cable
connector with a metal back shell. A high quality braided
shield and twisted conductor load cell cable must be used to
minimize interference. All cable extensions including
junction boxes must provide shield continuity.
GS1650Mk3/v2 Load Cell
Connector.
Pin
Jumper to sense pin
if no sense wires
are used.
Connection
3
+ Excitation
(Positive).
5
4
-
(Negative).
8
5
+ Sense
(Positive).
8
-
(Negative)
2
+ Signal
(Positive)
1
-
Signal
(Negative)
6/9
Shield,
(Frame).
7
Ground.
Excitation
Sense
The SENSE connections MUST BE MADE. Sound
engineering practice and accurate stable operation
demand the use of 6 wire load cell cables including sense
wires for long cable runs. Contact Gedge Systems for
advice if required and request a copy of Tech Note
TN-1018 which explains the importance of 6 wire cables.
If there are no sense wires on the load cell cable then
jumper the sense pins to the excitation pins at the
GS1650Mk/v2’s load cell connector. Otherwise make the
connection at the remote load cell or junction box.
Carefully observe the polarity of the connection - positive
sense to positive excitation and negative sense to negative
excitation.
The load cell cable shield MUST be connected to the back
shell by crimping it between the 2 shells ensuring there is
no gap between the shells. It MUST also be connected to
pin 6 or 9 of the load cell connector.
MAKE CERTAIN THAT THE LOAD CELL CABLE
SHIELD IS ONLY GROUNDED AT ONE PLACE.
SOME LOAD CELLS HAVE THE SHIELD
CONNECTED TO THE LOAD CELL BODY and THIS
CAN COMPLICATE THE SHIELD ARRANGEMENT.
CONTACT GEDGE SYSTEMS FOR ASSISTANCE ON
PROPER SHIELDING.
When options are installed, looping pin 7 to 9 may reduce
noise, although initially leave pin 7 unconnected. IF THE
LOAD CELL SHIELD IS GROUNDED AT THE
GS1650Mk3/v2 ENSURE THAT ALL OPTIONS
CABLE SHIELDS ARE ALSO GROUNDED ONLY AT
THE GS1650Mk3/v2.
WARNING - FAILURE TO PROPERLY WIRE THE
SHIELD CABLES WILL RESULT IN GROUND
LOOPS IN THE CABLES WHICH MAY CAUSE
IMPROPER OPERATION OF THE INDICATOR.
2-6
issue 03 EAA.4 August 1997
GS1650Mk3/v2 Multi-Interval Weight Indicator.
Fig.2-2 GS1650Mk3/v2 Rear Panel.
Load Cell Connector.
J1 Option 01 and LCD Display Driver
Output Connector.
J2/1 and J2/2 Output Options Connectors.
The GS1650Mk3/v2 can be fitted SIMULTANEOUSLY with TWO
Output options:- Option 06 Analog Output and any one of the Serial
Output or I/O Cards.
issue 03 EAA.4 August 1997
2-7
GS1650Mk3/v2 Multi-Interval Weight Indicator.
2 .10 Weight Calibration
2 .10 .1 General
Regardless of the display resolution selected in digital setup,
the GS1650Mk3/v2 uses its maximum internal resolution of
130,000 counts during zero and span calibration. Weight
calibration involves zeroing out the dead load offset of the
weighing installation and spanning the GS1650Mk3/v2
display for the desired weight. For some installations, with
non-linear load cells or lever works, calibration will also
involve entering up to THREE Linearity Correction
settings. In addition, the GS1650Mk3/v2 may be used in a
MULTI-INTERVAL or MULTI-RANGE mode - this will
require entering the interval or range change points.
The calibration procedure for the GS1650Mk3/v2 for
MULTI-INTERVAL or MULTI-RANGE operation IS
EXACTLY THE SAME. ONLY in the final steps, where
the MULTI-INTERVAL or MULTI-RANGE method of
operation is selected is there any difference.
2 .10 .2 Weight Calibration Checklist - In Brief.
1. Enter Digital Setup Settings. Set Zero Track & Overload
OFF, use an update rate of 2.5/sec or slower and select ONE
Interval/Range. Set the method of operation to
MULTI-INTERVAL.
Allow the installation (load cells and indicator) to warm up
for at least 30 minutes before load calibration.
2. Do Load Calibration:(Some weighbridge installations do not return to a precise
ZERO after the ZERO CALIBRATION, even though a
precise ZERO can be obtained using the normal ZERO key.
Steps are included in the following which will allow
PRECISE weight calibration using the ZERO key and the
FINE SPAN ADJUSTMENT feature.)
a. With No Load on the platform do Cal Zero. A precise
zero return is not required at this point. (Weight display
should, however, be within 1 to 2 display divisions of zero.)
b. Preferably with a load of 15% to 20% of full capacity do
Cal Span.
c. Remove the load and do Cal Zero. Try up to three
times for a precise return of zero. Continue with the
following steps even if a precise zero is not obtained. (Do
not continue unless the weight display is within 1 to 2
display divisions of zero.)
d. Preferably with a load of 75% to 100% do Cal Span then
remove the weights.
Precise Zero Return? If yes go to “g”.
If a precise zero was obtained at step “c”, the weight
indication will return to zero here unless there is a fault in
the load cells or installation. If a precise zero was not
obtained at step “c”, the weight indication will not return to
zero - proceed with steps “e” and “f”.
2-8
e. Key the normal ZERO key to obtain a precise zero
indication. If this cannot be obtained the installation is
faulty - contact the factory for assistance.
f. Preferably with a load of 75% to 100%, use the
GS1650Mk3/v2’s Fine Span Adjustment feature to obtain a
precise weight display. Fine Span Adjust has no effect on
zero, it operates effectively even if a small dead load offset
has been “zeroed out” using the normal ZERO key.
When the weight is removed the weight indication will
return to zero unless there is a fault in the load cells or
installation.
g. Carry out any linearity adjustments that are required.
h. If MULTI-INTERVAL/RANGE operation is required
enter the multi-interval/range settings. Use weights to
verify the correct changeover points and count by values.
(HINT - even if the GS1650Mk3/v2 is to operate in the
MULTI-RANGE mode, it may be useful to check the
display change points in the MULTI-INTERVAL mode.
This allows the indicator to automatically switch to the
lowest weight increment on falling weight as well as rising
weight, whereas, for MULTI-RANGE operation, the
indicator MUST remain in the highest range weight
increment).
i. Weight Calibration is complete - Zero tracking and
overload can now be set, if required.
2 .10 .3 Weight Calibration Checklist - In Detail.
Weight set up and calibration should follow the check list
below. This procedure is important because some
operations intentionally zero out certain settings. For
example, the Cal Zero function does not change the Span
settings, the fine span Adjustment setting or any of the
Linearity correction settings. HOWEVER, the Cal Span
function clears all of these settings. The Interval/Range
change points are NOT affected by any functions except
those used to set them.
1. Enter the Digital Setup settings, listed below, that are
required for a proper weight display. Settings which do not
influence the weight display (for example serial output
settings) can be entered at any time before or after weight
calibration.
Resolution in display divisions.
Decimal Places.
Count By.
Update Rate.
Overload.
Zero Track.
Standstill {not in motion}.
Push-button Disable.
Intervals/Ranges.
Interval/Range.
d25000
dP0.0000
Cb 5
UP 10
OL OFF
Otr 1d
S 3d
Pd OFF
Int 1
intEr
Zero tracking MUST be OFF. Overload should be OFF and
One weighing Interval should be selected with the indicator
operating in the Multi-Interval mode.
issue 03 EAA.4 August 1997
GS1650Mk3/v2 Multi-Interval Weight Indicator.
The settings for “resolution”, in display divisions, and
“count by”, will be influenced by the number of weighing
intervals/ranges that the GS1650Mk3/v2 will eventually
have operating. Initially, these settings should be values
covering the entire capacity of the installation. For
example, a 150t weigh bridge to be operated in three
intervals/ranges, with increments of 10kg, 20kg and 50kg,
would initially be set up and calibrated as though it were to
operate in one interval/range of 15,000 divisions in
increments of 10kg per division. It does not matter that
15,000 divisions may not be allowed by weighing
authorities for the weigh bridge because, finally, the
intervals/ranges will be entered so that no one interval/range
exceeds the maximum allowed for the bridge ( eg 3000 div
maximum per interval ).
before carrying out a span or zero calibration. In addition,
do not assume that “a failure to return to zero” has occurred
until allowing some time to pass following unloading.
This point is particularly important when calibrating an
installation to a high number of divisions as is required to
initially set up MULTI-INTERVAL/RANGE weighing. In
some cases, as many as 15,000 divisions may be initially
required!
In installations which show very little creep ( ie very little
change in load after loading ) a few seconds’ delay instead
of 3 minutes’ delay will be sufficient.
2 .10 .5 Digital Setup Settings for Weight Calibration.
2. Carry out weight calibration by first calibrating zero then
span. Make any measurements needed to determine whether
linearity corrections will be required. Note down the
positions of departure from linearity.
3. If Linearity corrections are needed, calculate the number
of correction points ( the GS1650Mk/v2 has three ), the
required correction and the range over which the correction
is to take place. Enter the linearity corrections into the
GS1650Mk3/v2 and check the linearity of the installation
using calibration weights. If a small change to zero and/or
span is required, these changes can be made using “Cal
Zero” to adjust the zero and “fine Adjust” to make a fine
span adjustment without upsetting the overall calibration or
the linearity settings.
4. If MULTI-INTERVAL or MULTI-RANGE operation is
required, enter the interval/range limits now, and set the
Digital setup setting to the number of intervals/ranges
required ( two or three ). Using weights, verify that the
interval/range change points are correctly positioned. This
should be carried out in the MULTI-INTERVAL mode of
operation for the greatest accuracy and then, if satisfactory,
and MULTI-RANGE weighing is required, the
MULTI-RANGE setting can be selected.
5. Zero tracking and Overload should now be turned on to
complete the weighing part of the installation. Later, when
all other settings for serial outputs and options have been
entered the installation should be sealed.
Prior to load calibration enter the weight calibration related
Digital Setup settings:Resolution in display divisions.
d25000
Decimal Places.
dP0.0000
Count By.
Cb 5
Update Rate.
UP 10
Overload.
OL OFF
Otr 1d
Zero Track.
Standstill {not in motion}.
S 3d
Push-button Disable.
Pd OFF
Intervals/Ranges.
Int 1
Interval/Range.
intEr
Zero tracking MUST be OFF. Overload should be OFF and
One weighing Interval should be selected with the indicator
operating in the Multi-Interval mode.
WARNING - Except as detailed above in “Weight
Calibration Checklist - In Brief”, the use of zero track
and/or the normal operation of the ZERO key between zero
and span calibration will result in an inaccurate span setting.
2 .10 .6 Zero Out The Dead Load Offset
Allow the installation (load cells and indicator) to warm up
for 30 minutes.
1) Remove all live loads from the weighing system and
ensure that the zero track is turned OFF.
2 .10 .4 Load Cells & Creep & Loading Hints.
Creep occurs when a load cell’s electrical output changes
WITHOUT a change in load. This happens over the first
few minutes of applying a load to, or removing a load from,
a load cell. In most cases the major creep shift occurs in the
first 3 minutes after loading/unloading.
All load cells and weighing installations exhibit some creep
- it may not always be detectable, but it is there
nevertheless. Generally, aluminium load cells creep more
than steel load cells. The greater the number of divisions
and the smaller the live load with respect to the load cell’s
capacity, the greater will be the creep. The easiest way to
deal with creep is to always allow a consistent time to
elapse after loading or unloading a weighing system before
making any calibration adjustments. A good rule of thumb
is to allow 3 minutes to expire after loading or unloading
issue 03 EAA.4 August 1997
2) Key SETUP to display the dead load calibration menu “d
LoAd” and ACCEPT to select it. Because dead load
calibration proceeds immediately, you are given a chance to
exit at this point in case a key was pressed in error. The
GS1650Mk3/v2 now displays “SurE”. You can either
proceed with dead load calibration by keying ACCEPT or
exit without making or saving any changes by keying
SAVE/EXIT.
If you proceed with dead load calibration the
GS1650Mk3/v2 automatically zeros out all dead loads.
Following this operation, which takes 5 to 15 seconds, the
GS1650Mk3/v2 will return to its normal weighing mode
with a gross display of zero. If the required adjustment was
outside the GS1650Mk3/v2’s range a message is displayed
for 5 seconds. In this event the weighing installation should
2-9
GS1650Mk3/v2 Multi-Interval Weight Indicator.
be reviewed. If, due to other factors, the display was not
zero following calibration the procedure should be re-run.
Messages are :
C HI or OFF Load cell input is positive and above the dead
load offset adjustment range.
C LO or -OFF Load cell input is negative and below the
dead load offset adjustment range.
Do NOT continue with weight calibration until ZERO has
been obtained. Do NOT use the ZERO key in the normal
weighing mode to obtain a zero.
2 .10 .7 Span Calibration.
Span Calibration involves 2 passes using accurately known
weights. Zero Calibration MUST be conducted immediately
prior to span Calibration, and the normal weight operation
key ZERO must NOT be used to zero the display prior to
span Calibration.
Operation of the key ZERO rather than the proper dead load
calibration procedure will cause zero/span interactivity on
span Calibration.
When span Calibration is selected, the GS1650Mk3/v2
checks to ensure that a zero has NOT been acquired by
operation of the ZERO key or the zero track. If a zero has
been acquired in this way, then the GS1650Mk3/v2 displays
an zero error message in the form Err-O-.
The span Calibration process can continue by keying
ACCEPT but it should be noted that the result will probably
be a failure to return to zero. Preferably, the SAVE/EXIT
key should be pressed to exit span Calibration. Then repeat
zero Calibration taking care NOT to operate the ZERO key
between zero Calibration and span Calibration.
The GS1650Mk3/v2 exhibits absolutely no interactivity
between span and zero following the second Calibration
pass IF THE PROCEDURE BELOW IS FOLLOWED.
Any failure to return to zero following span Calibration is
solely the result of hysteresis, creep or non-repeatability in
the weighing installation.
The steps below include example values for a
GS1650Mk3/v2 set up for 3500 divisions by 2kg increments
(Full Scale 7000kg)
SPAN Calibration PASS 1.
1) Place a Calibration weight of MORE THAN 5% and
LESS THAN 20% of the GS1650Mk3/v2’s full scale
capacity on the scale. For example, more than 350kg and
less than 1400kg if the GS1650Mk3/v2 was set up for
3500dd by 2kg.
2) Key SETUP and NEXT to display the Live Load
calibration menu selection “L LOAd” then key ACCEPT.
At this point the GS1650Mk3/v2 will either display the
error message “Err-0-” (if the ZERO key or Zero Track has
been used) OR will display the full scale capacity of the
installation. (see above concerning the “Err-0-” error
message).
The full scale capacity is displayed for 5 seconds (or until
you operate a key) after which the value 000000 is
displayed.
You can exit span calibration at this point without making
any changes by keying SAVE/EXIT, OR, you can enter the
span calibration weight using the keys UP, DOWN and
SELECT DIGIT
NOTE:- If a minus sign appeared in front of the full scale
weight value the Calibration weight may not have been
placed on the scale.
After entering the required Calibration weight, key
ACCEPT to continue. The GS1650Mk3/v2 now
automatically adjusts the display to show the required
Calibration weight. This process, which takes 10 to 20
seconds, will end with the GS1650Mk3/v2 resuming normal
weighing with a gross display of the Calibration weight.
If the required adjustment was outside the GS1650Mk3/v2’s
range a message is displayed for 5 seconds. In this event,
the weighing installation should be reviewed. (See SPAN
ERROR MESSAGES below.)
3) Remove the weight from the scale and check the zero
return. In high accuracy applications a CAL ZERO
procedure is recommended at this point, even if the
GS1650Mk3/v2 displays zero.
SPAN Calibration PASS 2.
1) Now place a Calibration weight GREATER THAN
30% of the GS1650Mk3/v2’s full scale capacity on the
scale. NOTE:- For the greatest accuracy, a scale
installation (regardless of the brand of indicator used),
should always be calibrated on this second pass with a
weight equal to 100% of the scale’s capacity. When this
second pass weight is applied, the GS1650Mk3/v2 will
display a weight value which is close to the Calibration
weight’s value. Example weights for a 3500dd by 2kg setup
are - greater than 30% (2100kg) and 100% (7000kg).
2) Key SETUP and NEXT to display the Live Load
calibration menu selection “L LOAd” then key ACCEPT.
At this point the GS1650Mk3/v2 will either display the
error message “Err-0-” (if the ZERO key or Zero Track has
been used) OR will display the full scale capacity of the
installation. (see above concerning the “Err-0-” error
message). The full scale capacity is displayed for 5 seconds
(or until you operate a key) after which the value 000000 is
displayed.
You can exit span calibration at this point without making
any changes by keying SAVE/EXIT, OR, you can enter the
span calibration weight using the keys UP, DOWN and
SELECT DIGIT
NOTE:- If a minus sign appeared in front of the full scale
weight value the Calibration weight may not have been
placed on the scale.
2-10
issue 03 EAA.4 August 1997
GS1650Mk3/v2 Multi-Interval Weight Indicator.
After entering the required Calibration weight key ACCEPT
to continue. The GS1650Mk3/v2 now automatically adjusts
the display to show the required Calibration weight. This
process, which takes 10 to 20 seconds, will end with the
GS1650Mk3/v2 resuming normal weighing with a gross
display of the Calibration weight. If the required adjustment
was outside the GS1650Mk3/v2’s range a message is
displayed for 5 seconds. In this event the weighing
installation should be reviewed. (See SPAN ERROR
MESSAGES in the following.)
Clearing the fine span Adjustment. Key SETUP and
NEXT to display the CLEAR ADJUSTMENT menu
selection “CLr.AdJ” then key ACCEPT. The message
“SurE” will be displayed. Key ACCEPT to clear the setting
or SAVE/EXIT to leave the setting “as is” and resume
normal weighing.
3) Remove the weight from the scale and check the zero
return. If the above procedure was followed using the
recommended weights ANY FAILURE TO RETURN TO
ZERO will be the result of creep or hysteresis in the scale
installation. Following successful completion of this second
pass, weight Calibration is completed. The front panel name
plate may be installed and sealed.
2 .10 .9 Linearizing the Weighing System.
COMMENT:- If, for whatever reason, the scale does not
return to zero at this point, the weight calibration will be in
error. Rather than complete an entirely new Span
Calibration you can simply Cal Zero then apply a known
weight (preferably of high capacity) and use the
GS1650Mk3/v2’s fine ADJUST feature to trim the weight
calibration without completely upsetting any of the other
settings. See the section on Fine Span Adjustment below.
SPAN ERROR MESSAGES:Err-0- The ZERO key has been used to obtain zero rather
than the proper SETUP ZERO procedure.
C HI or OFF The load cell input is too high to be spanned
to the required weight.
C LO or -OFF The load cell input is too low to be spanned
to the required weight or a weight of 00000 was entered as
the required weight.
2 .10 .8 Fine Span Adjustment.
The GS1650Mk3/v2 includes a feature which enables fine
span adjustments to be made without upsetting any of the
zero, span or linearity settings. The fine span adjustment
will allow up to 5% adjustment in span. The adjustment
can be made at any load, but for best accuracy the
adjustment should be made as near to full capacity as
possible. To enhance the accuracy of this adjustment, each
change in span that is entered makes a change of only ONE
QUARTER of a display division. The most accurate way to
make the adjustment is to increase and decrease the
adjustment, noting where the digit changeover occurs from
the required value to the digit above and the digit below.
Then make half the correction to centre the adjustment in
the required digit.
Making a fine span Adjustment. Key SETUP and NEXT
to display the ADJUSTMENT menu selection “AdJUSt”
then key ACCEPT. The GS1650Mk3/v2 will now display
the actual weight. The keys UP and DOWN can be used to
change the weight with each key operation making an
adjustment of one quarter of a display division. Key
SAVE/EXIT to save the setting and resume normal
weighing. DO NOT KEY SETUP/PREV as this returns to
the menu mode without saving the changes.
issue 03 EAA.4 August 1997
NOTE:- The fine Adjustment setting is automatically
cleared on span calibration so that its full adjustment will be
available should it be needed.
2 .10 .9 .1 Description and Settings.
The GS1650Mk3/v2 Indicator has a linearity of better than
1 part in 12000. It therefore never needs a linearity
adjustment. However, many load cells and lever systems
are non linear and they do need one or several linearity
adjustments. For this reason, the GS1650Mk3/v2 includes
facilities to linearize the weighing installation.
The method of entering linearity corrections into a table of
values in the GS1650Mk3/v2 is easy to use, powerful in
operation and simple to understand. Each of the THREE
separate linearity correction settings requires FOUR entries
to allow you to completely customize the amount of
linearity correction to be applied. The entries are:Linearity Point. This is the location of the displayed
weight’s maximum departure from a straight line. It is the
point at which the GS1650Mk3/v2 will make the greatest
correction. The Linearity Point is entered into the
GS1650Mk3/v2 in display division units. So that absurd
results cannot occur, the Linearity Point is automatically
limited to a minimum of 200 divisions above zero and a
maximum of 200 divisions below the Full Scale setting.
NOTE 1:- The Linearity Point is NOT automatically
changed by any weight calibration procedure.
NOTE 2:- For MULTI-INTERVAL/RANGE installations,
all linearity measurements and corrections MUST be made
with the Interval/Range setting on ONE
INTERVAL/RANGE using the basic Full Scale capacity
and Count By settings of the GS1650Mk3/v2.
Linearity Correction. This is the amount of correction to
the displayed weight that the GS1650Mk3/v2 is to make at
the Linearity Point. For maximum accuracy, the Correction
is entered in QUARTER DIVISION increments in the range
+/-255. If a correction of -2 display divisions is needed this
would be entered as -8 ( -2 x 4 ).
NOTE : - T h e L i n e a r i t y C o r r e c t i o n i s A L W A Y S
automatically set to ZERO on Span Calibration. It is NOT
changed on Zero Calibration or on fine span
ADJUSTMENT. This value is set to zero on Span
Calibration because, in most instances, this will change the
entire weighing setup which would affect the linearity
points.
2-11
GS1650Mk3/v2 Multi-Interval Weight Indicator.
Upper Point. The Upper Point is the location, in display
divisions, above the Linearity Point, at which the Linearity
Correction ceases to have any effect. In operation, the
GS1650Mk3/v2 proportions the Linearity Correction value
based on the location of the displayed weight between the
Linearity Point and the Upper Point. This proportioned
value is then applied to the displayed weight.
For example, if the displayed weight is at the Linearity
Point, the actual linearity correction that will be made is
100% of the value entered for the “Linearity Correction”. If
the displayed weight is at the Upper Point, the actual
linearity correction that will be made is 0% of the value
entered for the “Linearity Correction”. If the displayed
weight is exactly mid way between the Linearity Point and
the Upper Point, the actual linearity correction that will be
made is 50% of the value entered for the “Linearity
Correction”. So that absurd results cannot occur, the Upper
Point is automatically limited to a minimum of 100
divisions above the Linearity Point and a maximum of the
Full Scale setting of the indicator. NOTE:- The Upper Point
is NOT automatically changed by any weight calibration
procedure.
Lower Point. The Lower Point is the location, in display
divisions, below the Linearity Point, at which the Linearity
Correction ceases to have any effect. In operation, the
GS1650Mk3/v2 proportions the Linearity Correction value
based on the location of the displayed weight between the
Linearity Point and the Lower Point. This proportioned
value is then applied to the displayed weight. For example,
if the displayed weight is at the Linearity Point, the actual
linearity correction that will be made is 100% of the value
entered for the “Linearity Correction”. If the displayed
weight is at the Lower Point, the actual linearity correction
that will be made is 0% of the value entered for the
“Linearity Correction”. If the displayed weight is exactly
mid way between the Linearity Point and the Lower Point,
the actual linearity correction that will be made is 50% of
the value entered for the “Linearity Correction”. So that
absurd results cannot occur the Lower Point is automatically
limited to a minimum of 0 divisions and a maximum of 100
divisions less than the Linearity Point. NOTE:- The Lower
Point is NOT automatically changed by any weight
calibration procedure.
EXAMPLE:Actual measurements showed that an installation of
10,000kg capacity set up to count by 2kg in 5,000 divisions
weighed accurately from no load to 2,000kg and from
7,000kg to full load. Between 2,000kg and 7,000kg the
displayed weight departed from a straight line (departed
from the ACTUAL WEIGHT) gradually until, at 4,000kg
the displayed weight was in error by +20kg. The first step
to calculating the required entries into the GS1650Mk3/v2 is
to convert these weight values to display divisions. The
point at which the installation starts to become non-linear is
2,000kg which is 1,000 divisions. The point at which the
maximum error occurs is 4,000kg which is 2,000 divisions.
The point at which the installation is again accurate is
7,000kg which is 3,500 divisions. The maximum error is
+20kg which is 10 divisions and 40 quarter division
2-12
increments ( 10 x 4 ). The settings to be entered into the
GS1650Mk3/v2 to correct this non-linearity error are:Linearity Point 2,000 divisions (4,000kg).
Linearity Correction -40 quarter division increments of
correction at 4,000kg.
Upper Point 3,5000 divisions (7,000kg).
Lower Point 1,0000 divisions (2,000kg).
Notice how the correction technique used in the
GS1650Mk3/v2 can correct for errors which are not
symmetrical. The GS1650Mk3/v2 can deal with errors
where the error curve is “bowed” a lot at one side of the
maximum error and “bowed” less on the other side. This
type of correction can only be made if the points at which
the correction starts and ends are entered independently.
COMMENT:- There is no need to use more linearity
correction points than is required to obtain accurate
weighing. In fact, for most installations, which do not need
any linearity correction, this adjustment can be completely
ignored because it is set to zero following span calibration
and will have no effect. Each Linearity Correction can be
thought of as acting alone. If there are three linearity
corrections in effect their total effect on the displayed
weight can be calculated by adding each of their corrections
together.
2 .10 .9 .2 Entering Linearity Corrections.
On completion of Zero and Span Calibration, check the
linearity of the system by applying weights in equal steps
from no load to the full capacity. Note the values and
departures from a true straight line and determine the point
of maximum departure and the maximum error. You should
also note the points at which the departure from a straight
line started and ended. These locations should be noted
down in display division increments ( not weight values ) as
it is “divisions” that will be entered into the GS1650Mk3/v2
to make the corrections. To enter the corrections select an
unused Linearity Correction 1, 2 or 3 and proceed as
follows:Key SETUP and NEXT to display the required Linearity
Correction menu “Lin 1”, “Lin 2” or “Lin 3” and then key
ACCEPT to enter the settings. Following the ACCEPT key
the Linearity Point will be displayed identified by a P. Use
the keys UP, DOWN and SELECT DIGIT to enter a new
setting and the keys ACCEPT or SAVE/EXIT to advance to
the next setting. Each setting will be displayed identified by
C for Correction, U for Upper Point and L for Lower Point.
When the Correction is displayed the key SIGN can be used
to change the sign of the correction from plus to minus and
minus to plus. After entering the linearity corrections the
actual linearity of the installation should be checked. If the
installation is found to have another error point, this can be
corrected either by changing the entry just made or by
entering settings into one of the unused Linearity
Corrections. It does not matter if each of the THREE
Linearity Corrections overlap.
issue 03 EAA.4 August 1997
GS1650Mk3/v2 Multi-Interval Weight Indicator.
2 .10 .10 Multi-Interval/Range Settings & Setup.
2 .10 .10 .1 Purpose of Multi-Interval/Range Weighing.
Weighing Authorities limit the number of scale divisions (resolution) that a weighing platform, weigh bridge, load cells and
indicator may have when used in Trade Approved applications. This limit is based on their testing of models submitted to
them by manufacturers. Generally speaking, except for low quality Weight Indicators, the Load Cells in a weighing system
will have a lower accuracy and fewer approved weighing divisions than the weight indicator.
The GS1650Mk3/v2 is a high quality, high stability, accurate Weight Indicator, approved in Australia for use to 8,500
divisions (see Supplementary Certificate S193B). There are very few Load Cells approved beyond 3,000 divisions. If a
high capacity scale or weigh bridge is to be constructed for Weights and Measures Approved weighing, it is unlikely that the
weigh bridge itself could be approved for more than 3,000 divisions. An example would be a 150t weigh bridge of 3,000
divisions weighing in 50kg increments. While 50kg increments (resolution) may be satisfactory at weights in the region of
60t to 150t it is less than satisfactory when weighing small gross weights or small net amounts on heavy trucks or
containers.
Multi-Interval and Multi-Range weighing offers a Trade Approved way of obtaining high accuracy/resolution at low gross
weights AND, for Multi-Interval weighing, low net weights with heavy tare values on high capacity weighing installations.
In the 150t example above, a Multi-Interval/Multi-Range weight indicator could be set up (provided the load cells were good
enough) to weigh in THREE INCREMENTS of 10kg to 30t, 20kg over 30t to 60t and 50kg over 60t to 150t with each
interval satisfying a 3,000 division weights and measures limit.
2 .10 .10 .2 Multi-Interval versus Multi-Range Weighing.
Both MULTI-INTERVAL and MULTI-RANGE weighing allow weighing to take place in several weighing ranges with
each successive range having larger weight increments. In trade approved weighing, the GS1650Mk3/v2, operated in either
the MULTI-RANGE or MULTI-INTERVAL mode has substantial advantages over indicators which can only operate in one
weighing interval or one weighing range. In addition, there are some situations where MULTI-INTERVAL weighing has a
substantial advantage over MULTI-RANGE weighing - the differences are shown in the table below:OPERATION.
MULTI-RANGE MODE.
MULTI-INTERVAL MODE
Increasing
gross weight.
Weighing starts in the smallest range
and weight increment size and
automatically changes to the next
largest size as the gross weight
increases.
Same as Multi-Range.
Acquire a tare
and weigh a
small net
weight.
The net weight display remains in the
weight increment size that was active
when the tare was acquired. In a three
range installation, weighing in 10kg,
20kg and 50kg increments, this could
be as high as 50kg. As the weight
increases the ranges are changed on the
basis of the gross weight. As the
weight decreases the net weight display
remains in the highest weight
increment AND will not revert to the
smallest increment UNTIL the net
weight is BELOW ZERO and the gross
weight is at ZERO and NOT IN
MOTION.
The gross weight display remains in the
highest weight increment AND will not
revert to the smallest weight increment
UNTIL the gross weight is at ZERO
and NOT IN MOTION.
The net weight is displayed in the
smallest weight increment units
regardless of the weight at which the
tare was acquired. In the same three
range example this would enable
displaying net weights in 10kg
increments even if the gross weight
was displayed in 50kg increments.
As the weight increases or decreases
the ranges/increments are changed
on the basis of the net weight rising
for increasing weight and falling for
decreasing weight.
Decreasing
gross weight.
issue 03 EAA.4 August 1997
The gross weight is ALWAYS
displayed in the smallest weight
increment available.
COMMENT.
If the weight is at the
interval/range changeover
point, the Multi-Interval
mode allows the weight
increment size to revert
back to the smaller weight
value as the weight falls
BUT in Multi-Range
weighing the display
remains fixed in the highest
weight increment size.
This shows the MAJOR
ADVANTAGE that
multi-interval weighing has
over multi-range weighing.
Small net weights can be
weighed more accurately
with a finer weight
resolution using
multi-interval weighing than
they can in multi-range
weighing.
The weight increment size
automatically reduces in
multi-interval weighing
BUT NOT in multi-range
weighing.
2-13
GS1650Mk3/v2 Multi-Interval Weight Indicator.
2 .10 .10 .3 Calculating Interval/Range Change Points.
Setting up the GS1650Mk3/v2 for Multi-Interval or
Multi-Range weighing is easy and straightforward if a few
basic concepts are kept in mind and a few steps are
followed. They are:-
3,000 display divisions - this value will be entered as the
Interval/Range 1 Limit (see below).
b) Will this increment size make it difficult for the scale to
return to zero?
b. Interval 2 Limit. If the installation is to only operate with
two Intervals/Ranges rather than three, there is no need to
calculate the Limit for Interval/Range 2 - the
GS1650Mk3/v2 automatically uses the Full Scale setting as
the limit for Interval/Range 1, 2 or 3 depending upon
whether 1, 2 or 3 Interval/Range operation has been
selected.
If a limit is required for Interval/Range 2, first calculate the
weight limit for interval/range 2. This value will be the
maximum number of divisions allowed by the Weighing
Authority for the load cells and scale assembly multiplied
by the Count By setting for Interval/Range 2. If the
allowed limit is 3,000 divisions then the weight Limit for
Interval/Range 2 will be 3,000 x 20kg = 60t. That is 3,000
display divisions. HOWEVER, the GS1650Mk3/v2 wants
an entry for this limit expressed in display divisions using
the basic setup of the indicator. That is a count by setting
of 10kg in this example. The Interval/Range Limit for
Interval/Range 2 will be entered as 60t / 10kg which is
6,000 divisions - this value will be entered as the
Interval/Range 2 Limit (see below).
c) Will mechanical vibration due to machinery or wind
make it difficult to obtain a steady reading?
2 .10 .10 .4 Entering Interval/Range Limits.
1. First of all determine the SMALLEST (Interval/Range 1)
weight increment (Count By value) to be used. This is very
important, as a change later in this value will mean
re-calibration of the installation. In determining the
smallest weight increment, some of the issues to consider
are:a) For trade weighing applications:- Is this increment size
approved for the load cells to be used? Check the load cells
approval certificate and check the allowed values for
Minimum Value of Verification Scale Interval AND
Minimum Dead Load Output Return for Multi-Range and
Multi-Interval Instruments. ( For assistance in these
calculations call Gedge Systems. )
The selection of the smallest increment size will also
influence the number of weighing intervals. Using the 150t
weigh bridge example again, if the smallest increment is to
be 10kg AND 3,000 divisions is the maximum allowed, then
3 intervals will be needed because the upper limit for the
10kg increment size is 3,000 x 10kg = 30t.
2. Having decided upon the smallest weight increment
(Interval/Range One “Count By” value) now select the “Full
Scale” divisions setting to be used for weight calibration.
This value has no weights and measures significance - it is
only used to set up the Weight Indicator and does not
represent the final number of weighing divisions.
Interval/range limits are entered into the GS1650Mk3/v2 in
EXACTLY the same way regardless of whether it is to
operate in a MULTI-RANGE or MULTI-INTERVAL
mode.
The GS1650Mk3/v2 automatically restricts the value that
can be entered as Limits for Intervals/Ranges 1 and 2.
These limits are:Upper Limit - Interval/Range limits cannot be entered that
are larger than the full scale setup of the indicator.
Lower Limit - An Interval/Range of less than 500 cannot be
entered - this is a Weighing Authorities’ limitation.
The full scale number of divisions will be the maximum
capacity divided by the smallest increment size. For the
150t example this will be (150,000kg / 10kg) = 15,000
divisions.
Despite these limits the weighing installation should be
checked with Test Weights to ensure that Increment Size
changeover is occurring at the intended Interval/Range
Limits.
3. Enter the smallest increment (Count By) setting and Full
Scale number of divisions into the GS1650Mk3/v2 using
Digital Setup.
Interval/Range Limits are entered by selecting the required
menu item and entering the value as follows:-
4. Having selected the lowest Count By setting the other
one or two increment sizes ( “Count By” values ) are
automatically selected by the GS1650Mk3/v2. For an
Interval/Range One “Count By” of 10, the “count by” for
the second interval/range will be 20 and the third
interval/range 50. With this information, now calculate the
interval/range limit points as follows:a. Interval/range 1 Limit. The maximum weight that can be
weighed in interval/range 1 will be the maximum number of
divisions allowed by the Weighing Authority for the load
cells and scale assembly multiplied by the Count By setting.
If the allowed limit is 3,000 divisions then the weight Limit
for Interval/Range one will be 3,000 x 10kg = 30t. That is
2-14
Key S E T U P and NEXT t o d i s p l a y t h e r e q u i r e d
Interval/Range Limit menu “Int.L1” or “Int.L2” and then
key ACCEPT to enter the settings. (Note:- The menu item
is always “Int” even if the indicator is to operate in its
Multi-Range mode.)
Following the ACCEPT key the current Interval/Range
Limit will be displayed. Use the keys UP, DOWN and
SELECT DIGIT to enter a new setting and the key
SAVE/EXIT save the setting and resume normal weighing.
NOTE:- Multi-Interval/Multi-Range weighing will not
operate until the Digital Setup setting “Intervals” is set to 2
or 3 and the operating mode “Interval” or “Range” is
selected.
issue 03 EAA.4 August 1997
GS1650Mk3/v2 Multi-Interval Weight Indicator.
2 .10 .12 Sealing the GS1650Mk3/v2
2 .10 .11 Name Plate Marking.
The GS1650Mk3/v2 can be used as a single interval/range
indicator, a multi-range indicator or a multi-interval
indicator.
The GS1650Mk3/v2 name plate should be sealed in place to
prevent unauthorized adjustment of the instrument. The
holes in both the nameplate thumbscrews and front panel
may be used with a wire and lead seal.
The markings required for Multi-Range operation differ
from those required for Multi-Interval operation.
Accordingly, the GS1650Mk3/v2 is supplied with TWO
NAMEPLATES as illustrated below.
Using the examples as a guide, select the nameplate
appropriate for the application and mark it with the
application’s details as required by the local weighing
authority.
Fig.2-3 Standard Name Plate - Single Interval/Range
Fig.2-4 Standard Name Plate - Multi-Interval.
Fig.2-5 Multi-Range Name Plate with Example Markings
issue 03 EAA.4 August 1997
2-15
GS1650Mk3/v2 Multi-Interval Weight Indicator.
2 .11 Trouble Shooting.
2 .11 .1 General.
Installation engineers and service personnel should refer to
the following when trouble shooting an installation in which
the GS1650Mk3/v2 is installed :GS Tech Notes TN - 1001 Fault Isolation in Weighing Installations.
TN - 1003 Zero Drift and the Use of a Star Bridge.
TN - 1005 Isolating the Option 06’s 4-20mA output.
2 .11 .2 Clock Operation.
The proper operation of the clock may be verified by
entering the clock setting routine described in section 4
paragraph 4.3.2 and observing the seconds as they change.
If the seconds change more rapidly than once per second,
the minutes fail to roll over, or the seconds do not change at
all, then the clock chip is faulty.
2 .11 .3 GS1650Mk3/v2’s Error Messages.
The GS1650Mk3/v2 conducts an extensive self checking
procedure whenever power is applied and at frequent
intervals during normal operation.
If the GS1650Mk3/v2 detects an error it immediately
displays an error message and normal weighing ceases.
Virtually all of the error messages will require service either
on the site or at the factory. Many of the errors can be
caused by a mains power supply which is sub-standard and
in installations where errors persist, careful consideration
must be given to the mains power supply.
The GS1650Mk3/v2 checks for errors in a logical order.
Usually the rectification of one error will not then result in
another error being detected and displayed. As an example,
the span settings are checked by the GS1650Mk3/v2 before
the zero settings. Therefore, if the GS1650Mk3/v2 displayed
error shows that the GS1650Mk3/v2 requires a new zero
load Calibration, it can be assumed that it will NOT also
require a new span Calibration. Of course, a span check
would be recommended in the event of any error. The error
messages are :OFF or -OFF The load cells electrical input is outside
the GS1650Mk3/v2’s calibrated range. This message may
occur momentarily during normal weighing when a heavy
load impacts the scale. In this event it may be ignored as
normal weighing will resume almost immediately. If this
display message persists, then the scale may currently be
overloaded. Alternatively there may be a fault in the scale,
the load cells or the indicator. Check the entire installation if
there is no load on the scale and this fault persists.
ConEE or Err1 or Err2 T h e G S 1 6 5 0 M k 3 / v 2
incorrectly configured. Contact the factory.
is
Err-0- The normal weighing key “ ZERO” has been
operated during Calibration of the GS1650Mk3/v2. Repeat
the zero Calibration process as per section 2.12.3 and then
span the GS1650Mk3/v2 as per section 2.12.4. The
Calibration procedure for the GS1650Mk3/v2, as well as
2-16
earlier models, requires that the normal weighing function
key “ZERO” not be operated between the SETUP ZERO
operation and the SETUP SPAN operation. (The manuals
have always contained a note to this effect but only the
GS1650Mk3/v2 has included an automatic procedural check
to ensure that the Calibration was being carried out in
accordance with the manual. Span Calibration can be carried
out following display of the Err-0- message by keying
SPAN again. HOWEVER, a span error will result and the
installer is CAUTIONED against proceeding with the span
Calibration. (Refer sections 2.12.2, 2.12.3 and 2.12.4)
Err3 This error may occur if the GS1650Mk3/v2 has
been stored with power off for several months or after about
10 years when the battery in the GS1650 Mk3’s RAM chip
is reaching the end of its useful life. This error may also
occur in the event of corruption of the GS1650Mk3/v2’s
CPU by a power spike or surge.
The error means that the battery support for the
GS1650Mk3/v2’s main memory chip has failed or there is
no battery supported memory installed. Weighing can only
commence following removal and re-application of power
to the GS1650Mk3/v2 and then ONLY if the battery in the
RAM chip retains the memory during the time that power is
off. If weighing continues, the tare weight, key zero value,
zero track value and rolling number print counter will all be
set to zero. The GS1650Mk3/v2’s 2K ram chip U11 should
be replaced. At the first application of power following its
replacement the Err3 message will again appear. Power
should remain applied for a few minutes and then it should
be removed and re-applied. The error should now NOT
appear.
Err04 The GS1650Mk3/v2’s digital setup settings have
been lost. Weight Calibration may not be required. Enter
digital setup and check/re-enter all of the digital setup
settings.
Err05 The GS1650Mk3/v2’s device number setting or the
clock/date print format setting have been lost. Enter digital
setup and check/re-enter the device number and clock/date
format.
Err06 The GS1650Mk3/v2’s weight linearity setting has
been lost. If the installation uses a linearity adjustment then
weight re-calibration for the linearity adjustment will be
required. If a linearity adjustment is not required then
simply set the linearity setting to zero.
Err07 The GS1650Mk3/v2’s zero load Calibration
settings are lost. Re - Calibrate zero.
Err08 The GS1650Mk3/v2’s span load Calibration
settings are lost. Re - Calibrate span.
Err09 The GS1650Mk3/v2’s factory set characteristics
are lost. Return the GS1650Mk3/v2 to the factory.
Err10 The GS1650Mk3/v2’s front panel key acquire zero
load setting is lost. Key zero while the error message is
displayed to resume weighing AND THEN key zero again
to acquire a new zero. Failure to acquire a new zero will
result in the frequent occurrence of the Err10 message.
issue 03 EAA.4 August 1997
GS1650Mk3/v2 Multi-Interval Weight Indicator.
2 .11 .4 Serial Input Diagnostics.
The GS1650Mk3/v2 may be fitted with options which allow
a user’s computer to download instructions to the
GS1650Mk3/v2. This type of installation can be very
difficult to trouble shoot as it is usually impossible to
determine in what form the receiving instrument’s processor
is actually seeing the data.
The GS1650Mk3/v2 is equipped as standard with serial
input diagnostics software that displays each serial byte as it
is received as well as providing a display of the status of the
GS1650Mk3/v2’s serial input status and control register.
The diagnostics routine is accessed as follows:Key SETUP and NEXT to display the Serial Diagnostics
menu selection “S diAG” then key ACCEPT.
The GS1650Mk3/v2 will now display the serial diagnostics
screen. Key SAVE/EXIT to resume normal weighing.
The figure below describes the GS1650Mk3/v2’s display
while serial input data is displayed.
2 .11 .5 Electrical Supply.
The GS1650Mk3/v2 has been designed to operate properly
on a normal mains electrical supply and incorporates
modern techniques of mains supply filtration and dropped
cycle protection. Like all precision analog and
microprocessor electronic products, there is a limit of mains
supply noise, dropped cycles and voltage variations beyond
which the GS1650Mk3/v2 will cease to properly operate.
These mains problems are often found where very heavy
inductive loads are placed on/off line either in close locality
to the GS1650Mk3/v2 or on the same electrical phase. The
GS1650Mk3/v2 includes a voltage supervisor circuit which
automatically resets the GS1650Mk3/v2 in the event of
gross power supply variation caused usually by a poor
mains supply. However, displayed weight variation may
result before reset levels occur.
If the GS1650Mk3/v2 persistently resets or malfunctions
due to interference, then the cause is most probably a poor
electrical supply and/or poor attention to load cell/options
cable shielding and grounding. A poor mains supply may be
rectified by the use of a different mains supply phase, but
preferably by the installation of a mains power conditioner
or uninterruptible mains supply conditioner. Interference
faults may only be rectified by very careful review of the
installation’s cabling and shielding.
Fig.2-6 Serial Diagnostics Display
issue 03 EAA.4 August 1997
2-17
GS1650Mk3/v2 Multi-Interval Weight Indicator.
3 OPTIONS-FIELD INSTALLED.
3 .1 About this section
This section describes installation and operation instructions
for each of the GS1650Mk3/v2’s field installed options.
Section 4 following describes the factory installed options
BR1 Battery Backed Memory and BR2 Calendar/Clock.
The preceding section 2 contains a trouble shooting
paragraph with serial input diagnostics procedures.
3 .2 General
The GS1650Mk3/v2 can be fitted with up to three Output
Option Cards. The three cards can comprise an Option 01,
an Option 06 AND any ONE of the Serial Output or Serial
I/O cards.
Connected to Port 1 - J4 on GS1650Mk3/v2
Motherboard.
01 GS Peripheral Output.
Connected to Port - 2 J3 on GS1650Mk3/v2
Motherboard.
02 EIA RS-232C Serial output.
03 Parallel BCD output.
05 20mA Current loop serial output.
06 Analog output.
07 EIA RS-232C & 20mA CL bi-directional serial I/O.
08 EIA RS-422A bi-directional serial I/O and RS-485
bi-directional multi-point serial transmission.
09 EIA RS-422A Serial output.
Installation of option 01 is described later in this chapter.
The following describes installation of options 02, 03, 05,
06, 07, 08 and 09. Facilities offered by each output option
board 02, 03, 05, 06, 07, 08 or 09 differ but their physical
installation is identical. It is described in the paragraph
immediately following. Individual features of each board
are described in paragraphs 3.4 onwards.
Fig.3-1 GS1650Mk3/v2 Rear Panel.
J2 Output Connector. Units shipped after April 1995 include
two cutouts for Output Connectors allowing installation of Op tion 06 AND any serial card.
issue 03 EAA.4 August 1997
J1 Option 01 Output Connector.
3-1
GS1650Mk3/v2 Multi-Interval Weight Indicator.
3 .3 Option 02/03/05/06/07/08/09 Installation.
STEPS TO INSTALL A SINGLE OUTPUT.
WARNING - The option board and interconnecting
cable MUST comply with the following paragraphs to
ensure proper noise insensitivity of the GS1650 Mk3/v2
and minimum noise emissions from the GS1650Mk3/v2.
Failure to observe the correct installation techniques will
void the product’s warranty.
a) Read the paragraphs that follow that are applicable to the
Option. Select and enter digital setup settings applicable to
the option.
The following steps refer to installations which will not or
which do not already include an Option 06 Analog Output.
If dual outputs are to be fitted to the GS1650Mk3/v2 then
follow the installation steps for DUAL OUTPUTS .
Option 01
b) Remove power from the GS1650Mk3/v2. Remove the
top cover and the option connector J3 blanking plate
situated on the rear of the GS1650Mk3/v2.
c) Install the option connector adaptor plate on the inside of
the GS1650Mk3/v2 using the M3 screws, nuts and washers
provided in the options kit. Ensure that the star washers
are placed under the head of the screws on the outside of
the back panel between the screw and the painted
surface. For Option 03, install adaptor plate on the outside
of the GS1650Mk3/v2.
d) This step applies only to option 03 and 06. Install the
plastic mounting post into the hole provided at the front
right of the GS1650 Mk3/v2 motherboard.
Option 02. Location for
Options 02, 03, 05 and
06 to 09.
GS1650k3/v2 Motherboard
Connector J4
GS1650Mk3/v2 Motherboard
Connector J3.
Fig.3-2 Top View of GS1650Mk3/v2 Motherboard.
3-2
issue 03 EAA.4 August 1997
GS1650Mk3/v2 Multi-Interval Weight Indicator.
e) Install the ribbon cable into the socket J3 located at the
front right on the GS1650Mk3/v2 motherboard ensuring that
the coloured conductor on the edge of the ribbon cable is to
the right of the GS1650 Mk3/v2 when viewed from the
front. The connector J3 is keyed but take care not to offset
the pins.
FIRST INSTALL OPTION 06 ANALOG OUTPUT.
f) Install the option board with the component side
uppermost by screwing it to the adaptor plate using the jack
screws and washers provided. For option 03, make the
frame connection on the left of the option board to the
adaptor plate via these screws.
c) Install option 06’s connector adaptor plate on the inside
of the GS1650Mk3/v2 using the M3 screws, nuts and
washers provided in the options kit. Ensure that the star
washers are placed under the head of the screws on the
outside of the back panel between the screw and the
painted surface. Use the lower of the two cutouts J2.
g) Connect the ribbon cable connector to the J1 socket on
the option board making sure the cable is not twisted.
h) For options 02, 05, 07, 08 or 09 select the baud rate
using the switches on the option board.
I) Replace the GS1650Mk3/v2 top cover and apply power to
complete the installation.
The analog output option 06 will need to be adjusted
AFTER the weighing installation has been calibrated. The
top cover should, however, be in place during weight
calibration to allow the indicator to warm up. It can later be
removed for option 06 adjustment.
OPTION 06 NOTE - For single output applications, with
the Digital Setup “dual output” OFF, ensure that the
jumpers on LK1 on the Option 06 Card are in the “NO
SERIAL OUTPUT” position.
STEPS TO INSTALL DUAL OUTPUTS.
a) Read the paragraphs that follow that are applicable to the
Option. Select and enter digital setup settings applicable to
the option.
b) Remove power from the GS1650Mk3/v2. Remove the
top cover and the option connector J3 blanking plates
situated on the rear of the GS1650Mk3/v2. There are two
cutouts, one above the other on the left of the rear panel.
The lower cutout is square and will require an adaptor plate.
The upper cutout is made to fit a 25 pin D connector and
will not require an adaptor plate.
OPTION 06 NOTE - For dual output applications, with
the Digital Setup “dual output” On, ensure that the
jumpers on LK1 on the Option 06 Card are in the
“WITH SERIAL OUTPUT” position.
d) Install the plastic mounting post into the hole provided at
the front right of the GS1650Mk3/v2 motherboard.
e) Option 06 Cards designed for Dual Outputs include one 6
conductor and one 7 conductor ribbon cable and on-board
connectors J1A, J3 and J3A. If the Option 06 does not
include these items it cannot be used for dual output
applications.
Install the 7 conductor ribbon cable into the socket J3
located at the front right on the GS1650Mk3/v2
motherboard, ensuring that the coloured conductor (pin 1)
on the edge of the ribbon cable is to the right of the
GS1650Mk3/v2 when viewed from the front.
Locate the J4 connector in the centre of the GS1650Mk3/v2
Motherboard. If this connector is presently used by an
Option 01 Card, disconnect Option 01’s cable from J4 on
the Motherboard and connect it to the socket J3A on the
Option 06 Card. Make sure that the ribbon cable’s pin 1
edge marking goes to pin 1 of J3A. The ribbon cable will
need to be twisted with the pin 1 marking to the front of the
GS1650Mk3/v2.
Install the 6 conductor ribbon cable into the socket J4
located in the centre of the GS1650Mk3/v2 motherboard,
ensuring that the coloured conductor (pin 1 ) on the edge of
the ribbon cable is to the right of the GS1650Mk3/v2 when
viewed from the front
The connectors J3 and J4 are keyed but take care not to
offset the pins.
f) Install the option 06 card with the component side
uppermost by screwing it to the adaptor plate using the jack
screws and washers provided.
g) Connect the ribbon cables installed in step e) above. The
7 conductor cable at the front of the GS1650Mk3/v2 is
connected to the J1 socket on the option 06 board. The 6
conductor cable in the centre of the GS1650Mk3/v2 is
connected to the J3 socket (NOT THE J3A SOCKET) on
the option 06 board. Make sure the cables are not twisted
too far. The pin 1 marking on the edge of the flat ribbon
must go to pin 1 of the socket on the Option 06 card.
issue 03 EAA.4 August 1997
3-3
GS1650Mk3/v2 Multi-Interval Weight Indicator.
NOW INSTALL THE SERIAL OPTION CARD.
3 .4 Serial Output Options 02, 05 and 09.
h) Install the serial option card with the component side
uppermost into the 25 pin cutout above the Option 06 card.
Use the jack screws and washers provided in the options kit.
Ensure that the star washers are placed under the head
of the jack screws on the outside of the back panel
between the screw and the painted surface.
3 .4 .1 Introduction.
I) Install the serial option’s 7 conductor ribbon cable into
the socket J1A located at the front right on the Option 06
Card ensuring that the coloured conductor on the edge of
the ribbon cable is to the right of the GS1650Mk3/v2 when
viewed from the front. The connector J1A is keyed but take
care not to offset the pins.
j) Connect the 7 conductor ribbon cable connector to the J1
socket on the serial option board making sure the cable is
not twisted.
k) Select the baud rate using the switches on the option
board.
l) Replace the GS1650Mk3/v2 top cover and apply power to
complete the installation.
The analog output option 06 will need to be adjusted
AFTER the weighing installation has been calibrated. The
top cover should, however, be in place during weight
calibration to allow the indicator to warm up. It can be
removed later for option 06 adjustment.
The 3 serial output options 02, 05 and 09 provide identically
formatted serial outputs. Only the signal levels differ.
Option 02 provides EIA RS-232C levels, option 05 provides
20mA active current loop levels and option 09 provides EIA
RS-422A levels. This paragraph applies to the output of
each of these options.
NOTE 1:- The GS1650Mk3/v2 does not transmit serial
data via any of its option cards during a 2-3 second “blank
display” period following a ZERO key operation.
Additionally, serial inputs may be missed during this time.
Controllers, Computers and Remote Displays/Devices using
the Indicator’s serial output or serial I/O must take this into
account.
3 .4 .2 Applicable Digital Setup Settings.
The following are digital setup settings which determine the
performance of options 02, 05 and 09. Their effect is
described in the paragraph “ Formatting The Output ”.
These settings are entered via digital setup and are fully
described in section 2 paragraphs 2.6 onwards.
NOTE:- If dual outputs comprising Option 06 Analog and
any Serial Output is required set the Digital Setup setting
“dual output” to “On”, otherwise set it “OFF”
Digital Setup Settings Applicable to
Options 02, 05 and 09
Description of Option 06 Connectors
Dual output
option 06
connectors
J1 (7 pins)
J3 (6 pins)
J3A (6 pins)
J1A (7pins)
Receiving connectors & board.
J3 GS1650Mk3/v2 Motherboard.
J4 GS1650Mk3/v2 Motherboard.
To Option 01
J1 of the Serial Output Board.
Setting
Output
dual output
Units
Block
Division
Beginning
& End
Parity
Special
Performance
Example
out.P1
do On
Un 01
bd 01
Comment
Select serial output P1-C3
Select On for dual outputs
and OFF for single output.
Select units to be printed.
Make a selection to suit the
application.
bE 01
PA E
SP-C3n
Automatic
AP On
Print
Print the
Pr OFF
Interval/Range
Number.
Refer to the description of
this setting in Section 2
“Digital Setup” and make a
selection to suit the
application.
Make a selection to suit the
application.
A unique device number described in 2.5 may be entered
for printing or output to a computer. For “Output” selections
P1 and P2 the device number 99 results in a rolling
number printout rather than a device number printout.
3-4
issue 03 EAA.4 August 1997
GS1650Mk3/v2 Multi-Interval Weight Indicator.
3 .4 .3 Connector.
3 .4 .5 Formatting The Output.
The following table provides pin identities for the option’s
25 pin D female connector. Option 05’s 20mA current loop
output is active. The polarity of the connection at the option
05 end of the cable must be observed.
Note :- To minimize interference to the GS1650Mk3/v2 and
by the GS1650Mk3/v2 a braided shield cable MUST be
used with metal back shells for the connectors at each end
of the cable. Connect the shield to the metal back shells by
crimping it between the two shells, ensuring that there is not
an air gap between the shells. Also connect the shield to pin
1 of the connector at each end of the cable.
The GS1650Mk3/v2 offers a wide selection of output
formats detailed in paragraph 3.4.8 and selected in digital
setup. The 5 basic formats, combined with 9 beginning/end
characters and 7 block division characters provide the user
with 315 possible output formats ( not including the 10
units of measure settings, the calendar/clock, the rolling
number counter and the Interval number ).
Options 02, 05 and 09 Serial Output Connector.
Pin No. Option 02
Frame (Shield)
1
7
Receive Data
(RS-232C.
GS1650Mk3/v2
Serial Data Out)
Signal Ground
6
No Connection
3
Option 05/09
Frame (Shield)
Serial Data Return
(20mA return -Tx)
(Option 09 - Signal)
Signal Ground
(Option 09 Only)
Serial Data Out
(20mA source +Tx)
(Option 09 + Signal)
3 .4 .4 Baud Rate.
Formats 1 or 2 are primarily for use with printers. The
range of beginning/end and block divide characters includes
combinations of line feeds and carriage returns. For format
2, each printed output may be printed across the page or
down the page with a variety of line spacings.
Output formats 3 to 5 are intended for use with computers,
GS Intelligent Printers and GS Summing Units. They may
be formatted with similar flexibility to the printer formats.
Successive outputs may be bracketed with unique ASCII or
control characters to simplify string recognition. In addition,
blocks of data within each successive string may be
bracketed with block division control or ASCII characters to
enable these blocks to be found within the string.
Digital Setup Settings Settings for A & D Printer
Output.
Setting
Output
Setting
out.AdS
Units
Un 01
Block
Division
Beginning
& End
Parity
bd 01
Switch group SW1 switches 1 to 3 on the option board
selects the data transmission rate.
Options 02,05 and 09 Baud Rate Settings
SW1
Baud Rate
600
1200
2400
4800
9600
19200
not used
not used
1
off
on
off
on
off
on
off
on
2
off
off
on
on
off
off
on
on
3
off
off
off
off
on
on
on
on
Note :19200 baud not recommended for 20mA Current Loop.
2400 baud should be used if Output Type AdP or AdS is
selected.
issue 03 EAA.4 August 1997
bE 01
PA E
Special
SP-C3n
Performance
Automatic
AP OFF
Print
Print the
Pr OFF
Interval/Range
Number.
Comment
Select AdS for Stream output
or AdP for single line output
on operation of the
GS1650Mk3/v2’s PRINT
key.
Select 01 to 03 for “Kg”, “ g”
or “ t”. NOTE: Some printers
cannot accept “ t”.
These settings have no effect
for output types AdS and
AdP.
Parity is ALWAYS EVEN for
AdS and AdP regardless of
the parity setting.
These settings have no effect
for output types AdS and
AdP.
This setting should be OFF.
3-5
GS1650Mk3/v2 Multi-Interval Weight Indicator.
3 .4 .6 Print key & Auto Print operation for P1/P2.
Operation of the GS1650Mk3/v2’s PRINT key will initiate
a serial output provided that a proper weight is displayed
and the scale is not in motion at the time the key is
operated.
Operation of the GS1650Mk3/v2’s AUTO PRINT facility
will have the same effect as operation of the PRINT key.
The form of the output following a PRINT operation will
vary widely depending upon the setup settings selected. The
following limited examples are based upon the serial output
selection P2 . Applicable digital setup settings and other
requirements are noted.
1) Two print key operations at
00200.0 kg G
different weights, with digital setup
00134.4 kg T
settings including units #01 for “kg”,
00065.6 kg N
beginning/end #03 for nothing and
CR LF LF after each printout and
00152.2 kg G
block divide #02 for CR LF after
00100.0 kg T
00052.2 kg N
each line. In this example the device
number is set to 00 and is therefore
not printed, the Calendar/Clock option BR2 is either not
installed or is off.
2) The same as 1) above but with an
option BR2 Calendar/Clock installed
and European date/12 hour clock
format selected. The device number
remains at 00.
08-22-2000 15:25
00200.0 kg G
00134.4 kg T
00065.6 kg N
08-22-2000 15:35
00152.2 kg G
00100.0 kg T
00052.2 kg N
4) The same as 3) but with only one
printed
weight
and
the
GS1650Mk3/v2 given a device
number of 15 on installation.
3-6
08-22-2000 15:25
61234
00200.0 kg G
00134.4 kg T
00065.6 kg N
6) The same two print key operations as in 1) above but
beginning/end #02 and block divide #07
00200.0 kg G 00134.4 kg T 00065.6 kg N
00152.2 kg G 00100.0 kg T 00052.2 kg N
3 .4 .7 Print key & Auto Print operation for C1 - C3
Operation of the GS1650Mk3/v2’s PRINT key OR AUTO
PRINT facility does not initiate a serial output when serial
output setting C1 to C3 is selected. Certain of the outputs
C1 to C3 contain a print character. The print character is
normally a space but is set to a P for one serial output
stream following operation of the GS1650 Mk3/v2’s
PRINT key or AUTO PRINT facility.
B01* 00200.0* 00134.4* 00065.6*GMI EP*E
22-08-1997 03:25PM
00200.0 kg G
00134.4 kg T
00065.6 kg N
22-08-1997 03:35PM
00152.2 kg G
00100.0 kg T
00052.2 kg N
3) The same as 2) with option BR2
Calendar/Clock installed and USA
date format/24 hour clock format
selected showing the year 2000.
5) A single print example like 4)
but the GS1650Mk3/v2 was given a
device number of 99 on installation
which results in a 5 digit rolling
print counter printout rather than a 2
digit fixed device number.
08-22-2000 15:25
15
00200.0 kg G
00134.4 kg T
00065.6 kg N
This is illustrated using format 5 selection C3 with
beginning/end #07 ( B and E ), block division #05 ( * ),
SP-C3n and device number 01.
3 .4 .8 Output Format.
Table 3-1 contains the available output formats. Format 1
and format 2 are transmitted only on a PRINT key or
AUTO PRINT operation, provided that the scale is not in
motion. Formats 3 to 5 are transmitted at the end of each
display update cycle. The length of the character string and
therefore the location within the string of any particular
character will depend upon the user’s selection of the
Beginning, End and Block Division characters.
3 .4 .9 Output Character/Protocol.
10 bit ASCII character with 1 start bit, 7 data bits, 1 bit set
by user as odd/even parity or as 0 or as 1 plus 1 stop bit.
The state of the Parity bit (the 8th bit) is set during Digital
Setup. Bits are sent in order of start bit, b0 to b6 of data,
b7 user selectable Parity bit and stop bit. XON/XOFF
Protocol is available when Option 07 or Option 08 is used
for serial output instead of Option 02, 05 or 09.
issue 03 EAA.4 August 1997
GS1650Mk3/v2 Multi-Interval Weight Indicator.
Format 1. Parameter selection out.P1
Bg DT BD No BD W1 Sc Un Sc Ty BD En
Format 2. Parameter selection out.P2
Bg DT BD No BD WG Sc Un Sc Ty BD WT Sc Un Sc Ty BD WN Sc Un Sc Ty BD En
Format 3. Parameter selection out.C1
Bg DT BD No BD W1 BD En
Format 4. Parameter selection out.C2
Bg DT BD No BD W1 BD D2 D3 D4 D5 D6 D7 BD En
Format 5. Parameter selection out.C3
Bg DT BD No BD WG BD WT BD WN BD D2 D3 D4 D5 D6 D7 BD En
Format 6. Parameter selection out.c1f
Bg No W1 En
The above describes a string comprising the sum of the sub-strings identified by each of the legends. These sub
strings are :Bg
DT
BD
D2
D3
D4
D5
D6
D7
En
No
Sc
Ty
Un
W1
WG
Beginning of transmission character selected in digital setup.
Option BR2 Calendar/Clock output in the form date and time as selected in section 4.
NOTE:- Date is year 2000 Compliant with the year printed as 1960 to 2059.
The BD character following the date and time is ONLY output when date and time are output.
Block division character selected in digital setup.
Displayed weight identity. G gross, N net or T
M scale is in motion, S scale is still.
I, O or U for scale is inscale overscale or underscale.
Z for gross is zero. ASCII space for gross is not zero.
E stored tare is not zero, ASCII space stored tare is zero.
P for Print key or Auto Print operation otherwise an ASCII space.
End of transmission character selected in digital setup.
Device Number 01 to 99 selected on installation. If number 00 selected, the number and the following
block division character are not transmitted. For printer outputs Format 1 and 2, selection of
device number 99 causes a 5 digit rolling number to be printed instead of the device number.
ASCII space.
Weight type and a space G gross, T tare, N net.
Units of measure selected in digital setup.
Displayed weight gross, net or tare.
Weights G, T, N.
Device number :2 ASCII numerals. For example “01”. Or for rolling print counter 5 ASCII numerals. For example “62345”
Weight :8 ASCII alpha/numerics, space or minus sign, space and digits.
For example “- 002387” Or where decimal places are used, space or minus sign, 6 digits and a decimal point. For example
“ -002.387" NOTE:- The weight value for format 6 ”c1f" never includes a decimal point. This is to keep the string length
to an absolute minimum in the interest of speed.
issue 03 EAA.4 August 1997
3-7
GS1650Mk3/v2 Multi-Interval Weight Indicator.
3 .5 Serial I/O Option 07 & 08
3 .5 .3 Connector.
3 .5 .1 Introduction.
The table below provides connection details for options 07
& 08. Data Out and In refer to data being sent and received
by the GS1650Mk3/v2.
Serial I/O options 07 & 08 are designed for use with
computers and similar bi-directional serial communication
devices. They may also be used in applications where the
printer or computer output from the GS1650Mk3/v2 is
required to have XON/XOFF protocol. Option 07 and 08
provide identical performance, only the signal levels differ.
Option 07 provides an EIA RS-232C and 20mA Passive
Current Loop serial input/output capability.
Option 08 provides an EIA RS-422A and RS-485
input/output capability. For option 07, the RS-232C and
20mA Current Loop outputs are available simultaneously.
The input may be selected as either RS-232C or 20mA
current loop. The GS1650Mk3/v2 is equipped with an
extensive range of serially controlled facilities, accessed via
the use of the Serial I/O options 07 & 08. In general, these
comprise :a) The ability to completely control the operation of the
GS1650Mk3/v2 via a remote computer.
b) The ability to serially output on request a wide range of
internal weight, status and settings data.
The provision of a device number, entered on installation,
which is intrinsic within the communication protocol, offers
the opportunity of serially bussing many GS1650Mk3/v2’s
and communicating with them by unique addresses. This
feature is enhanced by the fact that the GS1650Mk3/v2 only
sends data on a specific request. The GS1650Mk3/v2’s front
panel PRINT key has no effect when Option 07 or 08 is
installed.
3 .5 .2 Applicable Digital Setup Settings.
Following are digital setup settings applicable to options 07
and 08.
Setup Settings Applicable to Options 07 and 08
Setting
Output
Example
out.io1
dual output
do On
Units
Block
Division
Beginning
& End
Parity
Special
Performance
Un 01
bd 01
bE 01
PA E
SP-C3n
Options 07 and 08 Serial I/O Connector.
Pin Option 07
RS-232C
1 Frame
(Shield)
2 Data In
Option 07
20mA CL
Frame
(Shield)
NC
Option 08
RS-485
Frame
(Shield)
NC
Option 08
RS-422
Frame
(Shield)
NC
Data Out
-Signal
Data Out
+Signal
Signal Gnd.
3
Data Out
NC
6
NC
NC
7
Signal Gnd. NC
Data In/Out
-Signal
Data In/Out
+Signal
Signal Gnd.
9
NC
NC
NC
Data Out
+Tx
Data Out
-Tx
Data In
+Rx
Data In
-Rx
NC
Data In
-Signal
NC
NC
NC
NC
Data In
+Signal
NC
10 NC
11 NC
12 NC
13 NC
NC
Option 07’s 20mA current loop I/O is passive and isolated.
It includes internal diode bridges so the polarity of the
connection at the option 07 end is immaterial.
Note :- To minimize interference to the GS1650Mk3/v2 and
by the GS1650Mk3/v2 a braided shield cable MUST be
used with metal back shells for the connectors at each end
of the cable. Connect the shield to the metal back shells by
crimping it between the two shells ensuring that there is not
an air gap between the shells. Also connect the shield to pin
1 of the connector at each end of the cable.
Comment
Select io1 for serial I/O. Select
P1, P2 or C1 to C3 for
serial output only with
XON/XOFF capability.
On for Serial I/O and Analog
Output otherwise OFF.
Not required for serial input
and output operation.
Make a selection to suit the
application.
Refer to the description of this
setting in Section 2 “Digital
Setup” and make a selection to
suit the application.
Ensure that the GS1650 Mk3/v2’s device number is
assigned and entered. Refer paragraph 2.5.
3-8
issue 03 EAA.4 August 1997
GS1650Mk3/v2 Multi-Interval Weight Indicator.
3 .5 .4 Baud Rate & Mode Selection.
SW1 (1) to (3) on the option board selects the data
transmission/receive rate. Switch (4) selects 20mA current
loop or EIA RS-232C input for option 07 and RS-422A or
RS-485 communication for Option 08.
Options 07 and 08 Baud Rate Settings
and Input/Output Selections.
b)Serially bussing several GS1650Mk3/v2s on a
20mA Current Loop is possible. Unscheduled outputs from
the GS1650 Mk3/v2 would corrupt the serial bus.
c)A comprehensive set of data request commands enables
the user to verify the legality and result of a command at a
timing best suiting their program.
SW1
Baud Rate
1
2
3
600
off
off
off
1200
on
off
off
2400
off
on
off
4800
on
on
off
9600
off
off
on
19200
on
off
on
not used
off
on
on
not used
on
on
on
Option 07 20mA Current Loop Serial Input.
Option 07 RS-232C Serial Input.
Option 08 RS-422A Serial Input/Output
Option 08 RS-485 Multi-Point Serial I/O
a)Unscheduled outputs by the GS1650Mk3/v2
unnecessarily complicate the user’s software with input
buffer clearing procedures.
4
The GS1650Mk3/v2 contains a 198 byte input buffer
enabling long sequences of command strings to be
transmitted by the user’s computer. As the GS1650Mk3/v2
ignores all communications which occur outside of the
command string delimiters, and as those which do not
contain the particular GS1650Mk3/v2’s device number, a
great deal of communication can occur with other weight
indicators in a loop without concern for overflowing the
GS1650Mk3/v2’s input buffer.
off
on
off
on
Note :- Do not use greater than 2400 baud for applications
which send data to the GS1650 Mk3/v2. 19200 baud not
recommended for 20mA Current Loop.
NOTE 1:- The GS1650Mk3/v2 does not transmit serial
data via any of its option cards during a 2-3 second “blank
display” period following a ZERO key operation.
Additionally, serial inputs may be missed during this time.
Controllers, Computers and Remote Displays/Devices using
the Indicator’s serial output or serial I/O must take this into
account.
3 .5 .5 Communications/Control.
Apart from Option 07 or 08, no additional options or
accessories are required to entirely operate the
GS1650Mk3/v2 from a remote computer. The user’s remote
terminal or computer controls the GS1650Mk3/v2 by
transmitting to it certain ASCII alpha-numeric characters in
a defined character string which always includes the
GS1650Mk3/v2’s unique device number.
The GS1650Mk3/v2 communicates with the user’s device,
only upon request, by a clearly defined ASCII
alpha-numeric character string which always includes the
GS1650Mk3/v2’s unique device number.
Following receipt of a command string, the GS1650Mk3/v2
does not transmit an acknowledgement regardless of the
legality or otherwise of the command.
This feature is by design for the following reasons:-
issue 03 EAA.4 August 1997
Serial Diagnostics Note :- Section 2 contains details of the
serial input diagnostics provided with the GS1650Mk3/v2.
3 .5 .5 .1 Clearing the Command Buffer.
Transmitting a control C character (^C $03) to the
GS1650Mk3/v2 at ANY TIME, even within a command
string, will unconditionally clear ALL commands from the
GS1650Mk3/v2’s serial input buffer.
Since the ^C will be recognised by the GS1650Mk3/v2 at
any time and without the use of delimiters or device
numbers, this command should be used with care where
several GS1650Mk3/v2’s are addressed on the same serial
bus as ALL GS1650Mk3/v2’s will recognise the command
and clear their input buffers.
Note 1 Communications/Control added November 1996.
3-9
GS1650Mk3/v2 Multi-Interval Weight Indicator.
3 .5 .6 Communication Language and Commands.
All serial commands input to the GS1650Mk3/v2 which include a weight comprise a 15 character string represented by
[NN****&XXXXXX] which is made up of three sub-strings enclosed by command string delimiters. The command
string delimiters are brackets [ ] and the sub-strings are represented by NN, **** and &XXXXXX .
All serial commands input to the GS1650Mk3/v2 which do not include a weight comprise an 8 character string represented
by [NN****] which is made up of two sub-strings enclosed by command string delimiters. The command string
delimiters are brackets [ ] and the sub-strings are represented by NN and **** .
The tables below show all of the commands which may be sent to the GS1650Mk3/v2 as well as the structure of the
GS1650Mk3/v2’s response.
Characters and their Positions in the Weight Input Command String Sent to the GS1650Mk3/v2.
(reserved for future use only)
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 Character Position
[
N N * * * * & X X X X X X ]
[
]
N N
* * * *
& X X X X X X
Weight Input Representative String showing sub-string
positions.
Are mandatory string delimiters .
Is a mandatory 2 digit ASCII Device Number sub-string in the
range 01 to 99 assigned to the GS1650Mk3/v2 on installation.
Example “29"
Is a mandatory ASCII alpha/numeric instruction sub-string of
4 characters as detailed in the following.
Is a 7 ASCII numeric sub-string which is only used in
commands which send weight data to the GS1650Mk3/v2.
The weight must comprise a sign character represented by
“&”. The sign must be positive “+” as the GS1650Mk3/v2
ignores negative signs. The numeral part of the sub-string
must be 6 ASCII numeral digits right justified with leading
zeros and no decimal places.
Examples :- “+000873" or ”+000000"
SUB-STRING CONTENTS FOR WEIGHT INPUT COMMANDS SENT TO THE GS1650Mk3/v2.
* * * *
Command :Reserved for future use - no current implimentation.
NOTES :A. Weight data transmitted by the GS1650Mk3/v2 is the weight resulting from the last weight update and will be the current
weight provided that the GS1650Mk3/v2 is inscale.
B. The GS1650Mk3/v2 completely ignores command strings if any part of the string is not understood or if the Device
Number is not the Device Number of the indicator or if the entire string takes longer than 10 seconds to be received.
C. A good design practice would be to write communications software which, after sending a command, requests
information from the GS1650Mk3/v2 to verify that the command was received and acted upon. One to two display update
cycles of the GS1650Mk3/v2 should be allowed before checking the indicator’s action following a command.
D. MULTI-INTERVAL/MULTI-RANGE NOTE:- Weight data sent by the GS1650Mk3/v2 in response to a request will
be in the same “Count By” increments as whatever weight is displayed. If, for example, a net weight of zero is displayed in
Interval/Range 1 but the requested gross weight value (which is not displayed) is within the capacity of Interval/Range 3, the
actual Count By increment size of the gross value transmitted will be consistent with Interval/Range 1 and not
Interval/Range 3. This presents no difficulty for an automated system, in fact it is essential to keep all count by units
consistent. If, however, the installation MUST receive weight information in “Count By” units of the Interval/Range that
the weight would fall within were it displayed, this is easily achieved. First transmit a command to display the weight of
interest and then request the GS1650Mk3/v2 send that weight - it will be transmitted in the “Count By” increments
belonging to the displayed Interval/Range setting.
3-10
issue 03 EAA.4 August 1997
GS1650Mk3/v2 Multi-Interval Weight Indicator.
Characters and their Positions in the Command String Sent to the GS1650 Mk3/v2 which do not include a weight.
1
[
[
2
3
4
N N *
5
6
*
*
7
*
8
]
]
N N
*
*
*
*
Character Position
Command Input Representative String showing sub-string positions.
Are mandatory string delimiters.
Is a mandatory 2 digit ASCII Device Number sub-string in the range 01 to 99 assigned
to the GS1650Mk3/v2 on installation. Example “29" .
Is a mandatory ASCII alpha/numeric instruction sub-string of 4 characters as detailed
in the following.
SUB-STRING CONTENTS for COMMANDS SENT TO THE GS1650Mk3/v2.
* * * *
W W A Z
W
W
W
W
W
W
W
W
W
W
A
D
D
D
L
T
G
N
T
L
W
W
W
W
W
W
W
W
W
W
U
G
N
T
A
L
?
?
?
?
M M I
?
M M V ?
M M P ?
M M U ?
M M C ?
M M c ?
M M D ?
M M i ?
M M F ?
issue 03 EAA.4 August 1997
Commend Sub-String comprising :ACQUIRE ZERO - Zeros the gross input emulating the zero key.
Note :- The basic GS1650Mk3/v2 will NOT service a serial input for approximately 1
second following an acquire zero instruction which is either sent to it by the serial
input or is the result of a front panel key operation. Serial data sent to the
GS1650Mk3/v2 during this 1 second period will be lost to the GS1650Mk3/v2. This
can be overcome by the installation of option BR1 or BR2 within the GS1650Mk3/v2
or by ALWAYS reading back the GS1650Mk3/v2’s status to verify command receipt.
ACQUIRE TARE - Acquires Tare and displays net, emulating the tare key .
DISPLAY GROSS - Displays gross weight .
DISPLAY NET - Displays net weight .
DISPLAY TARE - Displays tare weight for 3 seconds then displays net weight.
LOCK KEYS - Locks out the front panel and remote keys. The GS1650Mk3/v2
always powers up in the unlocked condition.
UNLOCK KEYS - Unlocks the front panel and remote keys.
GROSS ? - a request for the GS1650Mk3/v2 to transmit the gross weight.
NET ? - a request for the GS1650Mk3/v2 to transmit the net weight.
TARE ? - a request for the GS1650Mk3/v2 to transmit the tare weight.
ALL ? - a request for the GS1650Mk3/v2 to transmit ALL weights. (G, T and N)
The GS1650Mk3/v2 will send THREE separate strings in response to this request with
each strings composition being the same as though just the Gross, the Net or the Tare
weight had been requested. Accordingly each of the three strings will have a beginning
character and an ending character.
If numeric agreement is required between the 3 transmitted weights the Digital Setup
setting “Special Performance” should be set to “C3n”. Refer to the explanation in
Digital Setup for further details.
ISSUE ? - Requests the GS1650Mk3/v2’s software issue & version number in the
form “
EAA.1".
VERSION ? - Requests the GS1650Mk3/v2’s software issue & version number in the
form “
EAA.1". ( this command has the same effect as the issue? above.)
PRODUCT ? - Requests the GS1650Mk3/v2’s model number
in the form
“1650M32".
UPDATE ? - Requests GS1650Mk3/v2’s display update rate. Response is 1, 2, 4, 8
or 16 for update rates of 10, 5, 2.5, 1.25 or 0.625 per second.
COUNT BY ? - Requests the GS1650Mk3/v2’s Digital Setup count by setting. For
MULT-INTERVAL/RANGE applications this will be the Count By value for Interval
1.
count by? - Requests the Count By value for the weight currently displayed.
DECIMAL ? - Requests the GS1650Mk3/v2’s number of decimal places setup.
interval/range now? - Requests the Interval/Range number, 1 to 3, of the weight
currently displayed. Request MUST always be “MMi?” even for Multi-Range
operation. The reply will contain an “i” for Multi-Interval operation or an “r” for
Multi-Range operation.
FULLSCALE ? - Requests the number of fullscale divisions for the GS1650Mk3/v2.
3-11
GS1650Mk3/v2 Multi-Interval Weight Indicator.
When requested to do so, the GS1650Mk3/v2 transmits a string of 19 characters preceded by the beginning sub-string and
succeeded by the ending sub-string which was selected in the expanded digital setup.
The string can be represented by :- Beg[NN****&XXXXXX!#$%]End. The overall length of the string transmitted
by the GS1650Mk3/v2 will depend upon the user’s selection of beginning and end characters during installation. In the table
below no beginning or ending characters are shown. If a beginning character is selected then the location of data in the string
transmitted by the GS1650Mk3/v2 will be offset by the number of characters in the beginning sub-string. Additionally the
overall length of the entire string will depend upon the number of characters in the ending sub-string.
Characters and their Positions in the String Sent by the GS1650Mk3/v2. ( Begin & end characters NOT shown.)
1
[
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19 Character Position
N N * * * * & X X X X X X !
# $ % ]
[
]
Is the GS1650Mk3/v2 2 digit ASCII
Device Number. Eg “34"
Is an EXACT copy of the 4 character
instruction that initiated the output. For
example, if the tare weight had been
requested with the 4 character sub-string
“WWT?” then this sub-string in the reply
will also be “WWT?”
Is a 7 ASCII numeric sub-string.
“&” is the sign which will be positive “+”
or will be negative “-”. “XXXXXX” is a
6 ASCII numeric sub-string with the
digits right justified having leading zeros
and no decimal places the only exception
being the products model number which
contains letters and numbers being
“1650M32" for GS1650Mk3/v2. Examples
of numerals are :”+000873" or
“-004300"
These four characters represent the weight
indicator status sub-string which ONLY
has any meaning if the GS1650Mk3/v2 is
transmitting weight information as
indicated by the transmitted string
containing “WW” in positions 4 and 5. If
the transmitted string contains any other
characters in positions 4 and 5 then the
status sub-string is meaningless and will
literally be the characters “!#$%”.
MOTION STATUS - “!” is replaced by
an “M” if the scale is in motion and an
“S” if still.
DISPLAY WEIGHT - “#” is replaced
by “G”, “N” or “T” for Gross, Net or
Tare displayed.
INSCALE STATUS - “$” is replaced by
“I”, “O” or “U” if the scale is Inscale,
Overscale or Underscale.
SPARE - no current use - is literally “%”
N N
* * * *
& X X X X X X
!
W W
# $ %
!
W W
#
W W
$
W W
Output String showing positions of the
sub-string elements.
Are string delimiters .
%
0
1
Table of HEXADECIMAL equivalents for the ASCII characters used by the GS1650Mk3/v2.
2
3
4
5
6
7
8
9
?
[
]
++ A C D E F
G
ASCII
30
31
32
33
34
35
36
37
38
39
3F
5B 5D 2B 2D 41
43
44
I
L
M
N
O
P
S
T
U
V
W
Z
49
4C 4D 4E 4F
50
53
54
55
56
57
5A 21
3-12
!
45
46
47
HEX
#
$
%
i
c
ASCII
23
24
25
69
63
HEX
issue 03 EAA.4 August 1997
GS1650Mk3/v2 Multi-Interval Weight Indicator.
3 .6 Parallel BCD Output Option 03
3 .6 .1 General.
Option 03 provides five and a half decades of parallel BCD
together with lines which provide the weight status of the
GS1650Mk3/v2. Data is output at the end of each
GS1650Mk3/v2 display update cycle at a rate 10/second to
0.625/second depending upon the rate selected in digital
setup.
The data remains stable at the output at all times except for
a period of 1.6 milliseconds on data change. During this
period the BUSY line is held HIGH and all data should be
ignored.
BCD Option 03 Connector.
PIN I/O DATA
PIN I/O DATA
PIN I/O DATA
1
O
BUSY
13
O
D4B1
40
O
Tare Data
2
I
OP.E
14
O
D3B1
41
O
VALID
Data
3
I
HOLD
15
O
D3B2
42
4
5
O
O
D5B8
D5B4
16
17
O
O
D3B4
D3B8
43
44
O
O
D1B8
D1B4
6
O
D5B2
18-33
GROUND
45
O
D1B2
7
O
D5B1
34
O
T not Zero
46
O
D1B1
8
O
D6B1
35
O
Motion
47
O
D2B1
9
O
NEG
36
O
Gross Zero
48
O
D2B2
10
11
O
O
D4B8
D4B4
37
38
O
O
Print
Gross Data
49
50
O
O
D2B4
D2B8
12
O
D4B2
39
O
Net Data
SHIELD
3 .6 .2 Applicable Digital Setup Settings.
The normal digital setup setting “output” must be selected
and set to out.bcd in order to operate the BCD output
option 03. No other settings affect the performance of an
option 03 board.
3 .6 .3 Specification
NOTE:- Option03 MUST be ordered fitted with high speed
Option HS1 for use in the GS1650Mk3/v2.
Configuration:Output:- 5/ digits of data. 9 status lines. 1 busy line.
Input:- 1 hold data line. 1 output enable line.
1
2
Electrical:Output:- High Speed CMOS Buffers, capable of sinking
4mA per line. ( 10 LSTTL sink capability.)
Input:-Output Enable when link is cut, loading is 8
LSTTL inputs plus 1 @ 3k3 pullup resistor.
Hold Loading is 1 LSTTL input
plus 1 @ 3k3 pullup resistor.
Comments :O
Output
I
Input.
BUSY High during data change.
OP.E Output Enable. Normally no connection.
For TRI-STATE output, cut link N1-N2 on the
Option 03 circuit board.
Output is enabled when this input is HIGH
and in a TRI-STATE when this input is LOW.
HOLD Output Hold. Normally no connection.
When LOW data is held static on the Outputs.
PRINT Goes LOW for 1 display update period
following operation of the GS1650Mk3/v2’s
PRINT key.
VALID When BUSY is LOW, a LOW output
signifies valid data and a HIGH signifies
invalid weight data.
Note :- To minimize interference a shielded cable MUST be
used. The cable connectors must include metal backshells
and the shield should be connected to pin 42 and the metal
backshell at Option 03 and to Frame at the other end of the
cable.
issue 03 EAA.4 August 1997
3-13
GS1650Mk3/v2 Multi-Interval Weight Indicator.
3 .7 Analog Output Option 06.
3 .7 .1 General.
Option 06 provides a 0 to 10VDC and 4 to 20mA analog
output proportional to the GS165Mk3/v2’s display. The
analog output is updated at the end of each GS1650Mk3/v2
display cycle.
The analog level will be proportional to the weight
displayed by the GS1650Mk3/v2. It may therefore be
proportional to Gross, Net or Tare weight.
Each of option 06’s analog outputs is available
simultaneously. However, they may not be individually
calibrated. The user should select either volts or current as
the standard and use this in the calibration of the option 06
board.
The picture of Option 06 on this page shows the version
shipped after April 1995 which can be setup for
simultaneous output of Analog and Serial data.
J3A - 6 pin - Connect to Option 01 (if installed)
J3 - 6 pin - Connect to J4 on the
GS1650Mk3/v2’s Motherboard.
Span and Zero Potentiometers.
Links to set simultaneous Serial Outpt.
(see overpage).
J1A - 7 pin - Connect to J1 on the Serial
Card (if installed)
J1 - 7 pin - Connect to J3 on the
GS1650Mk3/v2’s Motherboard.
Fig. 3-3 Analog Output Card - Option 06
3-14
issue 03 EAA.4 August 1997
GS1650Mk3/v2 Multi-Interval Weight Indicator.
3 .7 .2 Dual Output Settings.
Settings needed to obtain single output are:-
The GS1650Mk3/v2 can be fitted with an Option 06 Analog
Output Card which allows any of the GS Serial Cards to
also be fitted and provide simultaneous Serial Output.
Digital setup setting “dual output” OFF.
Links at “LK1" on the Option 06 card in the ”NO SERIAL
OUTPUT" position.
Settings needed to obtain dual output are:Digital setup setting “dual output” On.
The enlarged picture of a section of the Option 06 Card
below and the drawing of the links shows the required
settings.
Links at “LK1" on the Option 06 card in the ”WITH
SERIAL OUTPUT" position.
Fig. 3-4 Part of Option 06 showing Serial Links.
Links shown in the position required if the
GS1650Mk3/v2 is to output Serial AND
Analog data. This is the REQUIRED position
if Digital Setup setting “dual output” is On.
Links shown in the position required if the
GS1650Mk3/v2 is to ONLY output Analog
data. This is the REQUIRED position if
Digital Setup setting “dual output” is OFF.
issue 03 EAA.4 August 1997
3-15
GS1650Mk3/v2 Multi-Interval Weight Indicator.
3 .7 .3 Applicable Digital Setup Settings.
For a SINGLE output of Option 06 Analog data the Digital
Setup setting “dual output” MUST BE OFF and the normal
digital setup setting “output” must be set to out.An.
The analog output is unipolar having a range of minus 4%
to plus 104% fullscale. Weights which are below zero,
underscale or negative offscale result in an output which is
limited to -4% FS. Weights which are over-scale or positive
offscale result in an output which is limited to +104% FS.
No other settings affect the performance of an option 06
board.
3 .7 .6 Specification.
For a DUAL output of Option 06 Analog data AND Serial
Data, the Digital Setup setting “dual output” MUST BE On
and the digital setup setting “output” must be set to the
Serial Output or Serial I/O setting to suit the Serial Card to
be installed.
NOTE:- Option06 MUST be ordered fitted with high speed
Option HS1 for use in the GS1650Mk3/v2.
No other settings affect the performance of an option 06
board.
Adj. Range
Accuracy
Resolution
External Load
3 .7 .4 Analog Output Connector.
The table below provides the user’s terminations on the
25 pin D female connector.
Range
Analog Output
-4% to +104% FS
4 to 20mA active source
AND 0 to 10VDC.
/ 3% of zero and span.
0.050% FS
0.025% FS
1kOhm minimum Voltage output.
700Ohm maximum Current output.
+
-
3 .7 .7 Resolution Comment
Option 06 Analog Output Connector.
Pin
Connection.
1
Shield, Frame.
7
-
9
+ Current Output.
11
-
13
+ Voltage Output.
Current Return.
Voltage Output.
Notes :- Do NOT connect pin 7 -Current Return or pin 11
-Voltage Output to the GS1650Mk3/v2’s frame or to any
external frame, ground or earth. Option 06’s outputs should
only be connected to floating inputs. Connecting them to
remote grounds will cause noise, instability and perhaps
damage. If multiple current loops are used then install or
build an isolating amplifier to avoid ground loop problems.
(Refer GS Tech Note TN - 1005)
To minimize interference to the GS1650Mk3/v2 and by the
GS1650Mk3/v2 a braided shield cable MUST be used with
metal backshells for the connectors at each end of the cable.
Connect the shield to the metal backshells by crimping it
between the two shells ensuring that there is not an air gap
between the shells. Also connect the shield to pin 1 of the
connector at each end of the cable.
3 .7 .5 Calibration.
Monitor the selected output, volts or current, ideally with
the installation’s load impedance connected. Obtain a
weight display of zero on the GS1650Mk3/v2 and adjust the
zero potentiometer for an output of 0VDC for voltage or
4mA for current.
Obtain a weight display as near to fullscale as is practical
and adjust the selected output to a proportional setting using
the onboard span potentiometer. For best results make 2
passes of Zero and Span adjustments.
3-16
Option06 output is driven by a high stability 12 bit Digital
to Analog converter which provides a resolution of 4,000
counts. If the GS1650Mk3/v2 is set up to display 4,000
divisions the resolution of the Option06 and the
GS1650Mk3/v2 display would be the same.
A high accuracy remote voltage display would have good
numeric agreement with the GS1650Mk3/v2’s display.
To further enhance the Option06’s accuracy, the
GS1650Mk3/v2 drives the Analog Output using Internal
Counts having a resolution of at least FOUR TIMES better
than the weight display. As a consequence of this, if the
GS1650Mk3/v2 was set up to display LESS THAN 4,000
DIVISIONS, the analog output from Option06 would have a
GREATER RESOLUTION than the indicated weight.
3 .7 .8 Customized Voltage Range.
The user may obtain a fullscale voltage output other than
the standard range of 0 to 10VDC. A customized voltage
range is obtained by soldering in place a user supplied
resistor “RU” in the location marked on the Option 06
board. The value “RU” may be calculated by :RU = (10 x V)/(10 - V)
where :RU
V
is the required 1%, metal film,
50ppm resistor value in kOhms.
is the required fullscale voltage
in volts. {Must be less than 10}
The following resistors will provide :V out
0-1
0-2
0-5
Resistor RU
1k10
2k49
10k
Note :- The use of resistor RU does not affect the
4 to 20mA current output.
issue 03 EAA.4 August 1997
GS1650Mk3/v2 Multi-Interval Weight Indicator.
3 .8 Peripheral Output Option 01.
3 .8 .2 Applicable Digital Setup Settings.
3 .8 .1 General.
Two Digital Setup settings influence Option01, they are
“Peripheral Output” and “Dual Output”.
Option 01 provides the GS1650Mk3/v2 with a fast balanced
line proprietary serial output at 62.5kbaud for low cost
interconnection to GS peripheral devices including the
GS1650R and GS1100 and GS1040 Remote Displays and
the GS3850 Setpoint Controller.
The “Peripheral Output” setting selects the Output and Input
operation of the Option01. The “Dual Output” setting does
not directly affect Option01 except to limit some of its
functions.
In addition, Option 01 provides 3 optically isolated inputs
which may be connected to remote push buttons to operate
certain functions of the GS1650Mk3/v2. GS Peripheral
Serial Output is NOT available for connection to user’s
devices.
This paragraph DOES NOT include interconnection details
between Option 01 and the various GS peripheral devices
to which it is designed to connect. These details are
contained in the peripheral device’s manual.
Basically, if a normal 62.5kbaud serial output is required to
drive Gedge Systems’ remote displays, printers and setpoint
controllers the “Peripheral Output” setting should be
“PO 01.n”.
If a remote “center of zero” indication is required instead of
a serial stream, and a ZERO key input is needed, the
“Peripheral Output” setting should be “PO 01.A”.
Refer overpage and to Digital Setup in Section 2 for further
details.
Option 01
J1
Fig.5-3 Location of Option 01.
issue 03 EAA.4 August 1997
J4
3-17
GS1650Mk3/v2 Multi-Interval Weight Indicator.
3 .8 .3 Installation of Option 01
3 .8 .5 User Connections for Setup Selection PO 01.A
Installation involves the following steps:-
Digital Setup selection PO 01A provides “Alternative”
Option 01 operation. Connect remote push buttons to the
optically isolated inputs on the Option 01 connector as
detailed in the following table.
1. Remove power from the GS1650Mk3/v2. Remove the
cover and remove the small blanking plate for the J4
connector. Install the option 01 board via its connector into
the J4 cutout on the left of the GS1650Mk3/v2’s rear panel.
Mount the board with the components uppermost. Place the
star washers under the mounting screws on the outside
of the rear panel.
2. Install the interconnecting cable between J1 on the option
board and J4 at the center of the GS1650Mk3/v2
motherboard. Where the Indicator includes a dual output
Option 06 card, which is already connected to J4 on the
GS1650Mk3/v2/v2’s Motherboard, connect the Option 01
ribbon cable to J3A on the Option 06 card instead of J4 on
the Motherboard.
Option 01 Peripheral Output Connector.
Pin
1
Shield, Frame.
2
ZERO. Normally open push button to user’s
24VDC power supply common.
3
ACQUIRE TARE. Normally open push button
to user’s 24VDC power supply common.
4
The connectors are keyed and cannot properly be installed
the wrong way, but be careful, the coloured line on the edge
of the ribbon cable must be to the right when viewed from
the front. Also, take care not to offset the pins between the
connectors as this will damage the Option board.
3. Replace the GS1650Mk3/v2 top cover and apply power
and enter the required Digital Setup settings to complete the
installation.
Option 01 Peripheral Output Connector.
Pin
Connections for “normal” operation.
1
Shield, Frame.
2
PRINT. Normally open push button to user’s
24VDC power supply common.
3
ACQUIRE TARE. Normally open push button
to user’s 24VDC power supply common.
4
DISPLAY GROSS. Normally open push button
to user’s 24VDC power supply common.
If the Digital Setup setting “Dual Output” is ON
and/or this Option is connected to the
GS1650Mk3/v2’s motherboard via the Analog
Option06 card this input will not function.
6
+24VDC user’s power supply 30mA max draw.
7
Serial Signal Logic Ground.
8
GS Serial -
9
GS Serial +
3-18
PRINT. Normally open push button to user’s
24VDC power supply common.
If the Digital Setup setting “Dual Output” is ON
and/or this Option is connected to the
GS1650Mk3/v2’s motherboard via the Analog
Option06 card this input AND the balanced line
drive ZERO output below will not function.
6
+24VDC user’s power supply 30mA max draw.
7
Serial Signal Logic Ground.
8
Negative balanced line drive output indicating
gross weight at center of zero. (see note above)
9
Positive balanced line drive output indicating gross
weight at center of zero. (see note above)
3 .8 .4 User Connections for Setup Selection PO 01.n
Digital Setup selection PO 01.n provides “normal”
Option 01 operation. Connect remote push buttons to the
optically isolated inputs on the Option 01 connector as
detailed in the following table.
Connections for “Alternative” operation.
3 .8 .6 Option 01 Inputs - Notes.
1. Momentary closure of the remote push buttons has the
same effect as operation of the matching front panel key on
the GS1650Mk3/v2 Indicator.
2. The push buttons short the user’s supply to the power
supply common through an internally fitted 2.2kohm current
limiting resistor.
3. A persistent closure on any of the remote keys may lock
out the GS1650Mk3/v2’s front panel keys or cause some
other unexpected result.
4. To minimize interference to the GS1650Mk3/v2 and by
the GS1650Mk3/v2 a braided shield cable MUST be used
with metal backshells for the connectors at each end of the
cable. Connect the shield to the metal backshells by
crimping it between the two shells ensuring that there is not
an air gap between the shells. Also connect the shield to pin
1 of the connector at each end of the cable.
3 .8 .7 Connection to LCD Display Units GS1020/1025
Operation of the GS1650Mk3/v2 with remote LCD displays
is contained in a separate manual - contact Gedge Systems
for details.
issue 03 EAA.4 August 1997
GS1650Mk3/v2 Multi-Interval Weight Indicator.
4 OPTIONS-FACTORY FITTED.
4 .1 About this section.
This section describes each of the factory installed options
available for the GS1650Mk3/v2. The preceding section 3
described all of the field installed options for the
GS1650Mk3/v2.
4 .2 Battery Backed RAM Option BR1.
The GS1650Mk3/v2’s operation and printout facilities may
be enhanced by the factory installation of battery support for
the GS1650Mk3/v2’s main memory. At power up, the
option BR1 or BR2 equipped GS1650Mk3/v2 does not reset
the following settings but uses the settings prevailing at
power failure. Settings saved on power failure are :Zero Track value.
Tare weight.
Rolling number counter.
4 .3 Calendar/Clock Option BR2.
4 .3 .1 Introduction.
The GS1650Mk3/v2’s extensive range of printer/computer
output formats may be enhanced by the inclusion of time
and date.
Option BR2, installed within the GS1650Mk3/v2 at the
factory prior to shipment, provides a battery backed high
precision digital clock as well as providing battery support
for the GS1650Mk3/v2’s main memory. The memory
support features are identical to those described above under
o p t i o n BR1. The following describes only the
calendar/clock features.
The time, date and format in which they are printed may be
adjusted by the user. The example printouts of section 3.4.6
and the table of printer/computer formats of table 3.1 show
the use of the time and date option.
4 .3 .2 YEAR 2000 COMPLIANCE
4 .3 .3 Setting the Time and Date.
The time, date and format in which they are printed may
only be adjusted via access to the SETUP/PREV key
beneath the sealable front panel nameplate. Remove the
front panel nameplate and proceed as follows :a. Key SETUP/PREV to display the GS1650Mk3/v2’s
installation menus. Key NEXT until the Calendar/Clock
menu “ dAtE” is displayed then key ACCEPT to display
the time in the form HH.MM.SS . The left most hours
digit flashes denoting it has been selected for change and
the seconds can be seen “ticking over”. The time is always
displayed and entered in the form HH.MM.SS regardless of
the printout format selected.
b. Key SELECT DIGIT to select a time digit for change.
Key UP to set the correct time. Set the correct time for
each of the digits for hours and minutes. Seconds need not
be set in anything but applications requiring very high time
accuracy.
c. Key SAVE/EXIT to save the new clock settings and
resume weighing or key NEXT to display the date in the
form DD.MM.YY. Date is always displayed in the form
DD.MM.YY regardless of the format selected for printout
BUT NOTE the year must be entered as 97, 98, 99 for the
year 1997, 1998, 1999 and 00, 01, 02 and so on for the year
2000, 2001, 2002 up to 2059.
d. Key SELECT DIGIT to select a date digit for change.
Key UP to set the correct date. Set the correct date for
each of the digits for days, months and year.
e. Key SAVE/EXIT to save the new date settings and
resume weighing or key NEXT to display the date/time
printed format selection number in the form F1. Select a
printed format from the table below, use UP to enter the
selected number.
f. Key SAVE/EXIT to save the new settings and resume
weighing or key NEXT to display the time again. The key
NEXT is used to step forwards to the next setting. The key
SETUP/PREV may be used to step backwards to the
previous setting.
4 .3 .4 Date/Time - Printed Formats.
All dates are printed or serial transmitted using the long
year format of four characters. Examples are: 1997 1999
2000
The calendar/clock option BR2 will automatically roll over
to the year 2000 after 2400hrs 31/12/1999.
Due to display width limitations years are programmed
using the short year format of 00 to 99 HOWEVER all year
values of 00 to 59 are internally converted to 2000 to 2059.
The table below gives each of the available time and date
printout formats for the format setting number F0 to F4.
The date and time are always printed in one line with 2
spaces separating the date and time.
Setting
F0
F1
F2
F3
F4
Date
{no printout}
DD-MM-YYYY
DD-MM-YYYY
MM-DD-YYYY
MM-DD-YYYY
Time
HH:MMAM
HH:MM
HH:MMPM
HH:MM
DD is day 01 to 31.
MM is month 01 to 12.
YYYY is year 1960 to 2059.
AM and PM are printed and denote 12 hour clock formats.
Formats F2 and F4 are 24 hour clock formats.
issue 03 EAA.4 August 1997
4-1
GS1650Mk3/v2 Multi-Interval Weight Indicator.
5 TECHNICAL SPECIFICATION.
5 .1 Basic Indicator.
INPUT
Sensitivity/Range :Linearity :Span Stability :Zero Stability :Noise :Zero Adj. Range :Excitation :Excitation Sensing :Source Impedance :Input Impedance :Analog Filter :Digital Filter :-
STANDARDS
Immunity :-
Transformer :Radiated EMI :Compliance :-
CALIBRATION
Programming :Calibration :Linearization :-
fine Adjustment :-
Multi-Interval/Range:-
Recalibration :-
issue 03 EAA.4 August 1997
0.33uV/d to 112uV/d to a maximum
Input of 45mV. Display provides -4% to
+104% Full Scale Range.
-+ 0.01% Full Scale.
-+ 7.5ppm/oC
For deadload offset from 0mV to 15mV
the greater of 0.2dd/oC or 200nV/oC
RTI.
1uV p-p RTI maximum.
- 1mV to +20mV
10VDC Indefinite Short Circuit
Protected. Up to EIGHT 350ohm Load
Cells in parallel 230mA max.
True differential remote sensing using a
separate pair of wires. Compensates for
up to 2V line loss.
2kohm maximum.
10Mohm minimum.
Active 2Hz 2 Pole Low Pass.
Motion discriminating rolling average
filter and user selectable A/D averaging
of 1 to 16 samples.
DIGITAL SETUP
Resolution :Decimal Places :Count By :Update Rate :Overload :-
Zero Track :Motion :Keyboard Disable :Power Up :-
Output :Peripheral Output:-
Intervals/Ranges:Interference Immunity. Designed to
meet NBS HB44 1986 immunity
requirements in 27Mhz VHF and
460MHz UHF Bands. Meets 17kVolt
static discharge tests.
meets 4.5kVolt Hi-Pot Tests.
Designed to meet FCC Part 15.
Designed to meet or exceed NBS HB44
1986; Australian NSC and similar
OIML R76 Class III based standards.
Interval/Range mode:Dual Outputs:Units (printed) :Block Division :Beginning/End :-
Entirely via front panel keyboard. Used
to set and display ACTUAL setting
selected.
Entirely via front panel keyboard.
Access to the inside of the Indicator is
not required.
THREE separate Linearity Correction
Points EACH able to compensate for
NON-SYMMETRICAL non-linearity.
For EACH, enter up to +/-62 display
divisions of compensation in 1/4division
increments AND Lower, Middle and
Upper correction locations
ANYWHERE in the weighing range.
Fine Span Adjustment of up to 5% in
1/4division changes using the front
panel keyboard WITHOUT upsetting
any of the calibration settings.
Full MULTI-INTERVAL and
MULTI-RANGE weighing in up to
THREE intervals & ranges with Count
By values of 1,2,5; 2,5,10; 5,10,20;
10,20,50 and 20,50,100.
Recommended recalibration period 1
year.
Parity Bit :Special Performance
Automatic Print:Print Interval:-
PRINT COUNTER :-
FRONT PANEL
Weight Display :-
Annunciators :Controls :-
100d to 25,000d in steps of 100d.
none to 4.
1, 2, 5, 10, 20, 50.
10, 5, 2.5, 1.25 and 0.625 per second.
Select overload blanking at 104% of
capacity or 1, 2, 3d over capacity. Acts
on the Increment size of the highest
weight Interval/Range.
Off or 0.5, 1 or 3 dd per second .
0.5, 1 or 3 dd per second.
Selectively disable the front panel keys.
Select a power up procedure to meet a
wide range of codes of practice
including “wait warm up”, “wait
standstill” and “wait zero”.
BCD, Analog, Serial Output or Serial
I/O.
Select output drive for remote LCD
displays and a range of Gedge Systems
remote displays, controllers and printers
INCLUDING and output selection for
“gross at zero” and a remote ZERO key
input.
Select operation in ONE, TWO or
THREE weighing Intervals/Ranges.
Select operation in Multi-Interval or
Multi-Range mode.
Select SIMULTANEOUS Analog and
Serial OUTPUTS.
Select from 10 units of measure for
printed output. kg, g, t, lb, oz, lb t, oz t,
N, kN and none.
Select from 7 printable or control
characters to divide the serial output
string.
Select from 10 printable or control
characters to begin and end each serial
transmission including a Form Feed to
eject a page from the printer.
Set the 8th bit {b7} as Even or Odd
parity or as always 1 or 0.
Modify the serial output format for
numeric agreement.
Set up to AUTOMATIC print following
a normal weighing cycle.
Set up to print or serially transmit the
current weighing Interval/Range
number.
Select a unique device number 01 to 98
for serial outputs or a rolling print
counter.
14mm(0.55in) high 7 segment High
Intensity red LED display to a
maximum of 199990 with minus (-)
sign.
6 LED lamps for weight identity and
status.
Positive action tactile feedback key
board behind tough water resistant
membrane.
5-1
GS1650Mk3/v2 Multi-Interval Weight Indicator.
GENERAL
Physical :Front :Body :-
Unit weight :Environment :Power :Rear Panel :-
All metal enamel finished desk
mounting enclosure. Panel Mounting Kit
Optional.
198mm wide * 96mm high (7.79in *
3.78in)
184mm wide * 90mm high (7.24in *
3.54in). Length overall 246mm(9.68in).
For panel mounting DIN standard cut
out 186mm wide * 92mm high ( 7.32in
* 3.62). Rear projection 232mm
(9.13in).
2.3kg (5lb). Shipping weight 3kg
(6.6lb).
-10C to +40C Operating; -15C to +70C
Storage; to 95%RH non condensing.
100/110/117/200/220/240VAC -+ 10%
49 to 62Hz 15VA. (specify voltage at
order)
Power cable appliance receptacle; Fuse
and fuse holder; Cut out for Options; 9
pin D male load cell connector and
mating cable plug with metal back shell.
OPTION 07
OPTION 08
BI-DIRECTIONAL SERIAL I/O. EIA
RS-422A asynchronous serial I/O and
EIA RS-485 Multi-Point serial
communication providing both
computer/printer output with
XON/XOFF protocol and computer
control of the GS1650 Mk3. 600, 1200,
2400, 4800, 9600, 19200 Baud. User
settable character of 10 bits comprising
:- 1 start, 7 data with the 8th bit b7 set
as odd/even parity or as a 1 or 0 plus 2
stop bits. 25 pin female D connector
with mating cable connector and metal
back shell supplied.
OPTION 09
EIA RS-422A SERIAL OUTPUT.
Single channel ASCII serial output. 600,
1200, 2400, 4800, 9600, 19200 Baud.
User settable character of 10 bits
comprising :- 1 start, 7 data with the 8th
bit b7 set as odd/even parity or as a 1 or
0 plus 2 stop bits. 25 pin female D
connector with mating cable connector
and metal back shell supplied.
5 .2 Field Installed Options.
OPTION 01
OPTION 02
OPTION 03/HS1
OPTION 04
OPTION 05
OPTION 06/HS1
issue 03 EAA.4 August 1997
GS Peripheral Output. Single channel
proprietary fast serial output for
connection of GS peripheral devices
including remote displays and batch
controllers. Remote optically isolated
inputs for PRINT, ACQUIRE TARE
and DISPLAY GROSS. Also able to
provide an indication of Gross weight at
ZERO plus a ZERO key input
(depending upon Digital Setup settings).
9 pin D female connector with mating
cable connector and metal back shell
supplied.
connector with mating cable connector
and metal back shell supplied.
BI-DIRECTIONAL SERIAL I/O. EIA
RS-232C and 20mA passive isolated
current loop asynchronous serial I/O
providing both computer/printer output
with XON/XOFF protocol and computer
control of the GS1650Mk3/v2. 75, 150,
600, 1200, 2400, 4800, 9600, 19200
Baud. User settable character of 10
bits comprising :- 1 start, 7 data with
the 8th bit b7 set as odd/even parity or
as a 1 or 0 plus 2 stop bits.
25 pin
female D connector with mating cable
connector and metal back shell supplied.
5 .3 Factory Installed Options.
EIA RS-232C SERIAL OUTPUT.
Single channel ASCII serial output. 600,
1200, 2400, 4800, 9600, 19200 Baud.
User settable character of 10 bits
comprising :- 1 start, 7 data with the 8th
bit b7 set as odd/even parity or as a 1 or
0 plus 2 stop bits. 25 pin female D
connector with mating cable connector
and metal back shell supplied.
PARALLEL BCD OUTPUT. 5 Digit
parallel BCD output 8 status lines and 1
busy line. 2 Inputs Hold Data and
Output Enable. Outputs TRI-STATE
CMOS 10 LSTTL sink. 50 pin D
female connector with mating cable
connector and metal back shell supplied.
PANEL MOUNTING KIT. Heavy duty
panel mounting clamps. Fits ALL GS
Products.
20mA CURRENT LOOP SERIAL
OUTPUT. Active single channel ASCII
serial output. 600, 1200, 2400, 4800,
9600, 19200 Baud. User settable
character of 10 bits comprising :- 1
start, 7 data with the 8th bit b7 set as
odd/even parity or as a 1 or 0 plus 2
stop bits. 25 pin female D connector
with mating cable connector and metal
back shell supplied.
ANALOG OUTPUT. High stability 0 to
10VDC and 4 to 20mA active current
loop analog output of displayed weight
gross or net. 25 pin D series female
OPTION BR1
Battery backed RAM. Battery support
for the GS1650Mk3/v2’s main memory
chip. Tare weight, zero track value and
rolling number print counter saved on
power failure.
OPTION BR2
Battery backed RAM and
CALENDAR/CLOCK. Battery support
for the GS1650Mk3/v2’s main memory
chip and provision of time and date
printout in addition to the retention of
tare weight, zero track value and rolling
number print counter on power failure.
5 .4 Ordering Guide.
GS1650Mk3/v2
INDICATOR. Specify factory options
BR1 or BR2 and mains voltage.
ISOLATED OPTIONS Many of the options listed above are
available with Optical Isolation. Check
with the factory prior to ordering if
Optical Isolation is required.
FIELD OPTIONS
Always supplied loose for user
installation. A maximum of 1 Option 01
PLUS 1 Option 06 PLUS 1 Option
02/05/06/07/08 or 09 may be installed
at any one time. If bcd output is
required then a maximum of 1 Option
01 PLUS 1 Option 03 may be installed
in the GS1650Mk3/v2 at any one time.
Mating cable connectors ARE
SUPPLIED as standard for ALL
Options. NOTE:- Options03 & 06 must
be ordered with the High Speed Option
HS1.
5-2

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