2151-30 RIO
HI 2151 SERIES WEIGHT CONTROLLERS
REMOTE I/O OPTION
OPERATION AND INSTALLATION
MANUAL
Corporate Headquarters
3860 Calle Fortunada
San Diego, CA 92123-1825
Phone: (858) 278-2900
FAX: (858) 278-6700
Web-Site: http://www.hardyinst.com
Hardy Instruments Document Number: 0596-0173-01 Rev J
®Copyright December 1999 Hardy Instruments, Inc. All Rights Reserved. Printed in the U.S.A. (941028)
Local Field Service
Hardy has over 200 field technicians in the U.S., and more positioned throughout the world to assist you in your support
needs. We also have factory engineers who will travel to your facility anywhere in the world to help you solve challenging
applications. We're ready to support you with:
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•
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Installation and start-up
Routine maintenance and certification
Plant audits and performance measurement
Emergency troubleshooting and repair
To request Emergency Service and Troubleshooting, Start-up, Installation, Calibration, Verification or to discuss a Maintenance Agreement please call 800-821-5831 Ext. 1757 or Emergency Service after hours (Standard Hours 6:00 AM to 6:00
PM Pacific Standard Time) and weekends Ext. 1111.
Outside the U.S
Hardy Instruments has built a network of support throughout the globe. For specific field service options available in your
area please contact your local sales agent or our U.S. factory at +1 858-292-2710, Ext. 1757.
Table of Contents
TABLE OF CONTENTS
TABLE OF CONTENTS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - I
TABLE OF ILLUSTRATIONS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - I
LIST OF TABLES - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A
CHAPTER 1 - OVERVIEW - - - - Allen-Bradley License - - - - - - Common Applications - - - - - - Monitoring Weighing Parameters
Short Glossary of Terms - Tare Value - - - - - - - - -
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CHAPTER 2 - INSTALLATION - - - - - - - - - - - - - - Remote I/O Board Cable Termination Dip Switch Configuration
About Cable Termination - - - - - - - - - - - - - - - - Setting the Cable Termination Dip Switches - - - - - - Installing the RIO Option Board - - - - - - - - - - - - - - - -
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CHAPTER 3 - SETUP - - - - - - - - - - - - - - - - - - - - Remote I/O Setup - - - - - - - - - - - - - - - - - - - - - - Bargraph LEDS Secondary Functions (HI 2151/20WC only)
Setup Procedures - - - - - - - - - - - - - - - - - - - - Display Error Codes - - - - - - - - - - - - - - - - - - - ERR 33 - - - - - - - - - - - - - - - - - - - - - - - ERR 34 - - - - - - - - - - - - - - - - - - - - - - - ERR 52 - - - - - - - - - - - - - - - - - - - - - - - Blind Unit Operation Setup - - - - - - - - - - - - - - - - - - About Blind Units - - - - - - - - - - - - - - - - - - - - Blind Unit Configuration - - - - - - - - - - - - - - - - - -
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CHAPTER 4 - DISCRETE TRANSFERS - - - - - - - - - - Discrete Writes - - - - - - - - - - - - - - - - - - - - - - Structure of the Two Words in the PLC Output Image Table
Bit Shift - - - - - - - - - - - - - - - - - - - - - - Weight Parameter - - - - - - - - - - - - - - - - - Status Byte - - - - - - - - - - - - - - - - - - - - Example 4-2
Discrete Reads - - - - - - - - - - - - - - - - - - - - - - 0 = Relay Status Byte - - - - - - - - - - - - - - - - - 1 = Remote Function Status Byte - - - - - - - - - - - - 2 = Indicator Group 2 Status Byte - - - - - - - - - - - 3 = Indicator Group 1 Status Byte - - - - - - - - - - - 4 = Dipswitch Settings (exterior) Status Byte - - - - - - 5 = Dipswitch Settings (interior) Status Byte - - - - - - 8 = MSB of 24 Bit Weight Value - - - - - - - - - - - - 9 = Sync Pulse - - - - - - - - - - - - - - - - - - - - - Example of Screen Printout - - - - - - - - - - - - - - -
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CHAPTER 5 - BLOCK TRANSFERS - - - - - - - - - - - - - - About Block Transfers - - - - - - - - - - - - - - - - - - - - - Block Read Commands - - - - - - - - - - - - - - - - - - - - Block Read Command Number 1: Full Status and Weight Data
Block Read Command Number 2: Setpoint Relay Parameter Example of Proper Setpoint Description Bytes - - - - - -
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HI 2151 SERIES WEIGHT CONTROLLERS REMOTE I/O OPTION
Block Read Command Number 3: Instrument Identification and Diagnostics - - - - - - - - - Block Read Command Number 4: Read Tare Value - - - - - - - - - - - - - - - - - - - - Block Read Command Number 5: Calibration Parameters - - - - - - - - - - - - - - - - - Block Read Command Number 6: Configuration of Rate-of-Change - - - - - - - - - - - - - Block Read Command Number 7: BCD Output Configuration - - - - - - - - - - - - - - - - Block Read Command Number 8: Configuration of Analog Output - - - - - - - - - - - - - - Block Read Command Number 9: Configuration of Standard RS232 Port (HI 2151/20WC Only)
Block Read Command Number 10: Sticker Value - - - - - - - - - - - - - - - - - - - - - - Block Read Command Number 11: Auto Zero Tolerance - - - - - - - - - - - - - - - - - - Block Read Command Number 12: Integrated Technician - - - - - - - - - - - - - - - - - - Block Transfer Read Example - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Block Write Commands - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - About Block Write Commands - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Block Write Command Number 51: Activate Scale Functions - - - - - - - - - - - - - - - - Block Write Command Number 52: Downloading Setpoint Relay Parameters - - - - - - - - Example of Proper Setpoint Description Bytes - - - - - - - - - - - - - - - - - - - - - Block Write Command Number 53: Send Tare Value - - - - - - - - - - - - - - - - - - - - Block Write Command Number 54: Scale Calibration Action - - - - - - - - - - - - - - - - Block Write Command Number 55: Calibration Parameters - - - - - - - - - - - - - - - - - Block Write Command Number 56: Configuration of Rate-of-Change - - - - - - - - - - - - Block Write Command Number 57: BCD Output Configuration - - - - - - - - - - - - - - - Block Write Command Number 58: Configuration of Analog Output - - - - - - - - - - - - - Block Write Command Number 59: Configuration of Standard RS232 Port - - - - - - - - - Block Write Command Number 60: Sticker Value - - - - - - - - - - - - - - - - - - - - - - Block Write Command Number 61: Auto Zero Tolerance - - - - - - - - - - - - - - - - - - Block Write Command Number 62: Waversaver/Excitation Monitor - - - - - - - - - - - - - Block Transfer Write Example - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Integer to Floating Point Routine - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Response and Error Codes - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Block Read or Block Write Error Codes - - - - - - - - - - - - - - - - - - - - - - - - - - - Block Write Error Codes - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Error Codes for Block Write 59 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Error Code for Block Write Command #53 - - - - - - - - - - - - - - - - - - - - - - - - - Error Code for Block Write Command #51 - - - - - - - - - - - - - - - - - - - - - - - - - Error Code for Block Write Command #55 - - - - - - - - - - - - - - - - - - - - - - - - - -
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CHAPTER 6 - CONVERSION CHARTS AND FORMULAS
Hex Chart - - - - - - - - - - - - - - - - - - - - - - - Relay Status Example - - - - - - - - - - - - - - - Block Write Example - - - - - - - - - - - - - - - - Math Conversion Programs - - - - - - - - - - - - - - -
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Table of Illustrations
TABLE OF ILLUSTRATIONS
CHAPTER 2 - INSTALLATION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2-1
FIG. 2-1 REMOTE I/O S1 DIP SWITCH SETTINGS (DEFAULT) - - - - - - - - - - - - - - - - - - - - 2-1
CHAPTER 3 - SETUP - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3-1
FIG. 3-1 FRONT PANEL/HI 2151/20WC - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3-1
CHAPTER 5 - BLOCK TRANSFERS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-1
FIG. 5-1 BLOCK TRANSFER READ EXAMPLE - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-14
FIG. 5-2 BLOCK TRANSFER WRITE EXAMPLE - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-27
FIG. 5-3 INTEGER TO FLOATING POINT ROUTINE - - - - - - - - - - - - - - - - - - - - - - - - - 5-29
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List of Tables
LIST OF TABLES
CHAPTER 2 - INSTALLATION
TABLE 2-1
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CABLE TERMINATION REQUIREMENTS - - - - - - - - - - - - - - - - - - - - - - - - 2-1
CHAPTER 3 - SETUP - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3-1
TABLE 3-1
TABLE 3-2
TABLE 3-3
INTERIOR DIP SWITCHES - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3-3
EXTERIOR DIP SWITCHES - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3-4
BINARY QUARTER NUMBER - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3-4
CHAPTER 4 - DISCRETE TRANSFERS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4-1
TABLE 4-1
TABLE 4-2
DISCRETE WRITE - 2 WORDS (16 BITS EACH) - - - - - - - - - - - - - - - - - - - - - 4-1
DISCRETE READ - 2 WORDS (16 BITS EACH) - - - - - - - - - - - - - - - - - - - - - 4-2
CHAPTER 5 - BLOCK TRANSFERS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-1
TABLE 5-1
TABLE 5-2
TABLE 5-3
TABLE 5-4
TABLE 5-5
TABLE 5-6
8ABLE 5-7
TABLE 5-8
TABLE 5-8
TABLE 5-10
TABLE 5-11
TABLE 5-12
TABLE 5-13
TABLE 5-14
TABLE 5-15
TABLE 5-16
TABLE 5-17
TABLE 5-18
TABLE 5-19
TABLE 5-20
TABLE 5-21
TABLE 5-22
TABLE 5-23
TABLE 5-24
TABLE 5-25
TABLE 5-26
TABLE 5-27
TABLE 5-28
TABLE 5-29
TABLE 5-30
FOUR BYTE NUMERIC FORMAT FOR WEIGHT PARAMETERS - - - - - - - - - - - - BLOCK READ COMMAND NUMBER 1: FULL STATUS AND WEIGHT DATA - - - - - - BLOCK READ COMMAND NUMBER 2: SETPOINT RELAY PARAMETERS - - - - - - SETPOINT DESCRIPTION BYTES - - - - - - - - - - - - - - - - - - - - - - - - - - - SETPOIINT DESCRIPTION BYTES - - - - - - - - - - - - - - - - - - - - - - - - - - BLOCK READ COMMAND NUMBER 3: INSTRUMENT
IDENTIFICATION AND DIAGNOSTICS - - - - - - - - - - - - - - - - - - - - - - - BLOCK READ COMMAND NUMBER 4: READ TARE VALUE - - - - - - - - - - - - - - BLOCK READ COMMAND NUMBER 5: CALIBRATION PARAMETERS - - - - - - - - - BLOCK READ COMMAND NUMBER 6: CONFIGURATION OF RATE-OF-CHANGE - - BLOCK READ COMMAND NUMBER 7: BCD OUTPUT CONFIGURATION - - - - - - - BLOCK READ COMMAND NUMBER 8: CONFIGURATION OF ANALOG OUTPUT - - - BLOCK READ COMMAND NUMBER 9: CONFIGURATION OF STANDARD RS232 PORT
BLOCK READ COMMAND NUMBER 10: STICKER VALUE - - - - - - - - - - - - - - - BLOCK READ COMMAND NUMBER 11: AUTO ZERO TOLERANCE - - - - - - - - - - BLOCK READ COMMAND NUMBER 12: INTEGRATED TECHNICIAN - - - - - - - - - BLOCK WRITE COMMAND NUMBER 51: ACTIVATE SCALE FUNCTIONS - - - - - - - BLOCK WRITE COMMAND NUMBER 52: DOWNLOADING
SETPOINT RELAY PARAMETERS - - - - - - - - - - - - - - - - - - - - - - - - - SETPOINT DESCRIPTION BYTES - - - - - - - - - - - - - - - - - - - - - - - - - - - SETPOIINT DESCRIPTION BYTES - - - - - - - - - - - - - - - - - - - - - - - - - - BLOCK WRITE COMMAND NUMBER 53: SEND TARE VALUE - - - - - - - - - - - - - BLOCK WRITE COMMAND NUMBER 54: SCALE CALIBRATION ACTION - - - - - - - BLOCK WRITE COMMAND NUMBER 55: CALIBRATION PARAMETERS - - - - - - - BLOCK WRITE COMMAND NUMBER 56: CONFIGURATION OF RATE-OF-CHANGE - BLOC WRITE COMMAND NUMBER 57: BCD OUTPUT CONFIGURATION - - - - - - - BLOCK WRITE COMMAND NUMBER 58: CONFIGURATION OF ANALOG OUTPUT - BLOCK WRITE COMMAND NUMBER 59: CONFIGURATION OF
STANDARD RS232 PORT - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - BLOCK WRITE COMMAND NUMBER 60: STICKER VALUE - - - - - - - - - - - - - - BLOCK WRITE COMMAND NUMBER 61: AUTO ZERO TOLERANCE - - - - - - - - - BLOCK WRITE COMMAND 62: WAVERSAVER/EXCITATION MONITOR - - - - - - - - BLOCK READ COMMAND NUMBER 70: READING RESPONSE
CODE AFTER A BLOCK WRITE - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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CHAPTER 6 - CONVERSION CHARTS AND FORMULAS 6-1
TABLE 6-1
HEX CHART - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6-1
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HI 2151 SERIES WEIGHT CONTROLLERS REMOTE I/O OPTION
TABLE 6-2
TABLE 6-3
TABLE 6-4
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RELAY STATUS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6-1
BINARY TO DECIMAL CHART - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6-2
BLOCK WRITE EXAMPLE - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6-2
Chapter 1 - Overview
CHAPTER 1 - OVERVIEW
Allen-Bradley License
Under license from The Allen-Bradley Corporation, Hardy Instruments
Inc. has developed a Remote I/O Interface for the HI 2151 Weight Controller. The HI 2151WC is a general purpose industrial and process
weighing instrument for use in a wide variety of applications including
filling, dispensing, batching, and monitoring rate of flow by weight.
The instrument includes numerous features and technologies including
up to eight setpoint relays, 1,000,000 counts of resolution, Secure
Memory Module for backup of critical calibration data, and
WAVERSAVER®, the ability to ignore plant and process mechanical
noise to quickly arrive at stable weight readings.
Hardy Instruments worked with substantial customer input and AllenBradley to identify that the remote I/O communications network best
matched the needs of system integrators and end users for industrial
and process applications. The interface is fast, field proven, requires
minimal wiring, requires no special software drivers, and is standard on
many Allen-Bradley programmable controllers. Setting each address
and baud rate in the instrument, connecting three wires, and writing
some ladder logic is all that is needed to begin communicating weighing parameters to and from an HI 2151WC controller.
Each Hardy Instruments’ HI 2151WC represents a quarter (1/4) rack of
discrete I/O (32 bits in the PLC Output and Input image files) to the
scanning PLC and supports both discrete and block transfers. The PLC
continually exchanges 32 bits of its PLC Input Image Table and 32 bits
of its Output Image Table with each 1/4 rack device. In a 1771 I/O
Rack, these bits would normally be transferred from and to discrete
input and output modules. For the weight controller, the Output Image
bits are used to send commands to the weight controller and the Input
Image bits return weight data and scale status bits. These actions are
referred to as “discrete writes and “discrete reads”. The user is also able
to exchange blocks of data with a 1/4 rack device via Block Transfer
instructions in the PLC ladder logic program. These commands are
referred to as “block writes” and “block reads”.
The host programmable controller can access all configuration and
weighing parameters in the HI 2151WC, including performing scale
calibration. The HI 2151WC can be used as a local display and keyboard for weighing parameters, or function as a blind controller properly digitizing the load cell signal and providing responsive setpoint
control.
Using the Remote I/O interface shortens development time and provides the most functional weighing interface available for your AllenBradley programmable controller. Before starting system design, you
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HI 2151 SERIES WEIGHT CONTROLLERS REMOTE I/O OPTION
should also read the Installation and Operation manual of the HI
2151WCs.
Information contained in this manual is subject to change. Always
check the latest version of this manual at our web site (http://www.hardyinst.com) before beginning system design. This product incorporates
technology which is licensed by Allen-Bradley Company Inc. AllenBradley does not technically approve, warrant or support this product.
All warranty and support for this product is provided by Hardy Instruments Inc. PLC®, PLC-2®, PLC-3®, PLC-5®, SLC500® Series are registered trademarks of the Allen-Bradley Company, Inc.
Common Applications
The HI 2151WC series can be used in conjunction with Allen-Bradley
programmable controllers to tackle a variety of process control needs.
The most basic use of the interface is to simply allow the programmable controller to read weight data from one or more HI 2151WC series
weight controllers. In addition to reading weight some other applications are:
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NOTE:
There are two standard and six optional setpoint relays which provide control of
ingredient weighments and weight level alarming.
Monitoring
Weighing
Parameters
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Filling
Dispensing
Batch Weighing Control
Monitoring Rate of Flow
Evaluating Totalized Weight
Check Weighing
Weight Level Alarming
The HI 2151WC series weight controllers are capable of calculating
five types of weight data, including the standard Gross and Net
weights. In addition to the standard Gross and Net weights there are
three options such as Peak Force, Totalized Weight (block transfer
only), and Rate-of-Change or mass flow rate entering or leaving a vessel.
Short Glossary of
Terms
1. Gross Weight - is used to describe the total weight of the container
and the contents.
2. Net Weight - is the weight of the contents of the container only.
3. Tare Value - The action of adjusting out the known weight of the
container from the total indicated weight, so that the indicator reads
weight directly.
4. Dead Load - The weight of the vessel and other equipment which
will be ignored during zero calibration.
Tare Value
Current Gross Weights becomes the Tare value by pushing the Tare
Push Button on the front panel of the HI 2151WC, remote functions
contact closure, discrete write or block transfer command by the PLC,
Chapter 1 - Overview
or can be entered as a numeric value via the keypad on the front panel
of the HI 2151WC. This new tare value is the reference point for Net
Weight.
TV = G - N
TV = Tare Value (weight)
G = Gross Weight
N = Net Weight
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Chapter 2 - Installation
CHAPTER 2 - INSTALLATION
Remote I/O Board Cable
Termination Dip Switch
Configuration
About Cable
Termination
BAUD
Weight controllers are connected to a cable in daisy-chain fashion and
are referred to as “nodes”. A Daisy Chain is a hardware configuration
in which devices are connected one to another in a series. The end
nodes on the daisy chain require termination resistors. The Remote I/O
board provides the S1 Dip Switches which are used for cable termination based on the baud rate. (See Table 2-1) The S1 Dip Switches are
only used on the last device in the daisy chain. For all other devices on
the daisy chain both dip switches should be set to OFF. (See Fig. 2)
MAX
NODES
TERMINATION
MAX
LENGTH
SWITCH 1
SWITCH 2
57.6 K
150 Ohms
16
10,000 Feet
ON
OFF
115.2 K
150 Ohms
16
5,000 Feet
ON
OFF
230.4 K
82 Ohms
32
2,500 Feet
OFF
ON
TABLE 2-1: CABLE TERMINATION REQUIREMENTS
NOTE:
Setting the Cable
Termination Dip
Switches
Refer to your Allen-Bradley PLC-2, PLC-3, PLC-5 and SLC 500 manuals for the
maximum number of nodes available.
Step 1. For all RIO board options (except for the last device) make
sure the dip switches are set to the OFF position. (See Fig. 21)
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S1
ON
OFF
FIG. 2-1 REMOTE I/O S1 DIP SWITCH SETTINGS (DEFAULT)
NOTE:
The factory default setting is for both switches to be turned OFF. Also note that the
dip switches in Figure 2-1 have been rotated for illustration purposes.
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HI 2151 SERIES WEIGHT CONTROLLERS REMOTE I/O OPTION
Step 2. On the last RIO board in the daisy chain, select the desired
switch settings in Table 2-1 for Baud Rate.
NOTE:
The cable lengths used in Table 2-1 are maximum lengths that can be used in the
daisy chain.
Installing the RIO Option
Board
Step 1. With the 26 pins facing down, align the RIO Option Board
over the connector on the A/D board. In either option slot.
Step 2. Gently slide the pins into the connector until it stops.
Step 3. Attach the board to the standoffs by installing the four screws
to the standoffs.
Step 4. Connect the cable to the 6 pin connector on the RIO board.
The 6 pin connector on the RIO option board is used for all
Remote I/O connections. Pin definitions:
Pin 1
Pin 2
Pin 3
Pin 6
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BLUE (1/2 of twisted pair)
SHIELD (outer braided shield)
Clear (1/2 of twisted pair)
Ground (Case)
Chapter 3 - Setup
CHAPTER 3 - SETUP
Remote I/O Setup
Bargraph LEDS
Secondary
Functions (HI 2151/
20WC only)
While the RIO menu is displayed, the Bargraph LEDs have the following secondary functions.
A. The Zero Track LED displays the status of the “Green LED” on the
RIO.
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On = Run
Off = Off Line
Flashing indicates either program mode or frequent
retries.
B. The Motion LED indicates Self-Test. Self-Test is executed when
the instrument powers up. The Motion LED flashes continuously if
the Self-Test fails.
C. The Ctr Zero LED illuminates if communications fail. This failure
can be caused by improper cabling, incorrect selection or improper
use of termination resistors.
D. The Total LED is used for factory testing and illuminates when the
status byte is set to 7.
FIG. 3-1 FRONT PANEL/HI 2151/20WC
NOTE:
The bargraph LED Secondary functions above are for the HI 2151/20 only. The setup
procedures in the remainder of this chapter are for both the HI 2151/20 and the HI
2151/30.
3-1
HI 2151 SERIES WEIGHT CONTROLLERS REMOTE I/O OPTION
Setup Procedures
NOTE:
Step 1. Enter the Option Menu by pressing the 7/Option button. (Display shows the first option available)
Step 2. Press the up arrow until RIO is displayed on the screen.
Step 3. Press the Enter button two times. (Display shows the currently selected Baud Rate value)
Step 4. Use the up or down arrow to select a baud rate 57600, 115200
or 230400. (Display shows the currently selected value)
Step 5. Press the Enter button two times.
Step 6. If a change is necessary, press the Test/Clr button.
Step 7. Use the numeric buttons and enter the PLC rack number.
(Maximum 63)
The rack number is displayed in decimal on the weight controller, and octal in the
PLC. You cannot use 0 for the PLC rack number.
Step 8. Press the Enter button.
Step 9. Press the Enter button to see the quarter number. (Display
shows the currently selected value)
Step 10. If a change is necessary, press the Test/Clr button.
Step 11. Use the numeric buttons and enter the PLC quarter number
(maximum 3).
NOTE:
The quarter rack number in the PLC is displayed in decimal. Qtr 0 = PLC Group 0,
Qtr 1 = PLC Group 2, Qtr 2 = PLC Group 4, Qtr 3 = PLC Group 6.
Step 12. Press the Enter button.
Step 13. Press the Enter button to view last quarter status.
Step 14. Use the up or down arrow buttons to select Yes or No to indicate whether or not this is the last quarter of this rack currently in use.
Step 15. Press the Enter button.
Step 16. Press the Exit button.
Step 17. Press the Exit button.
NOTE:
If any data was changed a Reboot is required.
Step 18. Now power-down the instrument and re-apply power to have
new menu selections activated. In addition, you must perform
a manual or auto configuration of the PLC.
Display Error Codes
ERR 33
ERR 34
ERR 52
Blind Unit Operation
Setup
3-2
These display error codes are in addition to those listed in the HI
2151WC manual.
Invalid quarter number entered. Select a value from 0 - 3.
Invalid rack number entered. Select a value from 1 - 63.
Too many serial ports are installed.
Chapter 3 - Setup
About Blind Units
NOTE:
Blind Unit
Configuration
An HI 2151WC Weight Controller that cannot be programmed or configured from the front panel is a blind unit. In a blind unit, the Remote
I/O parameters are configured using both the interior and exterior dip
switches. (See Tables below)
You must power-down and power up the instrument to have new switch positions activated. You must also perform a manual or auto configuration of the PLC.
Step 1. Disconnect the power cord from the instrument.
Step 2. Set the Interior Dip Switches. (See Table 3-1)
INTERIOR DIP SWITCHES
Switch Position - S2 which is located
on the Power/Relay board
1
n/u
2
n/u
3
n/u
4
n/u
5
last quarter in rack
ON = Yes
OFF = No
6
Blind Unit
ON = Yes
OFF = No
7
A1 (See Binary
Baud Rate Table
3-1)
8
A0 (See Binary
Baud Rate Table
3-2)
TABLE 3-1: INTERIOR DIP SWITCHES
BINARY BAUD
RATE
A1
A0
BAUD
0
0
57.6K
0
1
115.2K
1
0
230.4K
TABLE 3-2:
ON = 1
OFF = 0
NOTE:
Remember to select the appropriate jumper positions on the Remote I/O Option
Board.
3-3
HI 2151 SERIES WEIGHT CONTROLLERS REMOTE I/O OPTION
Step 3. Set the Exterior Dip Switches. (See Table 3-3)
EXTERIOR DIP SWITCHES
Switch Position - S3 which is located
on the Rear Panel
1
B5 (32)
2
B4 (16)
3
B3 (8)
4
B2 (4)
5
B1 (2)
6
B0 (1)
7
C1
8
C0
TABLE 3-3: EXTERIOR DIP SWITCHES
NOTE:
B0 through B5 represent a binary value for rack # from 1 to 63.
BINARY QUARTER #
C1
C0
Quarter #
0
0
0
0
1
1
1
0
2
1
1
3
TABLE 3-4: BINARY QUARTER NUMBER
ON = 1
OFF = 0
3-4
Chapter 4 - Discrete Transfers
CHAPTER 4 - DISCRETE TRANSFERS
Discrete Writes
The PLC places two sixteen bit words in the Output Image Table which
are read by the HI 2151WC weight controller. The second word defines
which weight data the HI 2151WC should place in the Input Image
Table for the PLC to read. The first word is reserved for future use. Programs should send all zeros for the first word to avoid conflict with
future revisions of the command set.
Structure of the Two
Words in the PLC
Output Image Table
bits: 15-12
bits: 11-8
bits: 7-4
bits: 3-0
First Word of
the Quarter
reserved for
future use
reserved for
future use
reserved for
future use
reserved for
future use
Second
Word of the
Quarter
bit shift
weight
parameter
1st status
byte
2nd status
byte
TABLE 4-1: DISCRETE WRITE - 2 WORDS (16 BITS EACH)
Bit Shift
A number from 0 to 4 specifies the number of bits to shift the 16 bit
window from the right of the internal 20 bit value. This sixteen bit window is the weight value that will be placed in the PLC Input Image
Table. See the section on resolution for additional information. Once
the sixteen bit value is read by the PLC, it can be multiplied by the factor shown below to yield the actual weight value.
0 = No shift, the lowest 16 bits are transferred.
1 = Shift one digit, multiply by 2 to achieve actual weight value
2 = Shift two digits, multiply by 4 to achieve actual weight value
3 = Shift three digits, multiply by 8 to achieve actual weight value
4 = Shift four digits, multiply by 16 to achieve actual weight value
Weight Parameter
NOTE:
Select either Gross weight, Net weight, Rate-of-Change (mass flow),
peak force (or peak weight), or Test weight to be placed in the PLC
Input Image Table.
All weight parameters are in the units (lbs., kgs.) used during calibration.
0 = Gross Weight (Standard)
1 = Net Weight (Standard)
2 = Rate-Of-Change (mass flow) (Optional)
3 = Peak weight or force (Optional)
4 = Test weight (an arbitrary incrementing value)
4-1
HI 2151 SERIES WEIGHT CONTROLLERS REMOTE I/O OPTION
Status Byte
Select two of the status bytes below to be placed in the PLC Output
Image Table. Definitions of the status bits contained in each status byte:
0 = Relay Status Byte
1 = Remote Function Status Byte
2 = Indicator Group 2 Status Byte
3 = Indicator Group 1 Status Byte
4 = Dipswitch Settings (exterior) Status Byte
5 = Dipswitch Settings (interior) Status Byte
6 = Acquire Tare (Set tare value = current gross weight)
7 = Lights test LED (see RIO Setup menu)
8 = MSB of 24 Bit Weight Value
0-3 = 4 bits of weight data (16-19)
4-7 = Sign Bits (20-23)
9 = Sync Pulse
0-7 = This byte increments every 50 milliseconds
Example
Placing a 0000 (Hex) for the first word and a 0123 (Hex) for the second
word in the PLC Output Image Table will cause the HI 2151WC to
place the least significant sixteen bits of the internal 20 bit net weight
value and Indicator Groups 1 and 2 Status Bytes in the PLC Input
Image Table.
Discrete Reads
the HI 2151WC places the weight and status information, specified in
the last discrete write command, in the PLC Input Image Table. The
data is arranged as shown in Table 3-2.
bits:
15-8
7-0
First Word of the Quarter
MSB of weight parameter
LSB of weight parameter
Second Word of the
Quarter
1st Status Byte
2nd Status Byte
TABLE 4-2: DISCRETE READ - 2 WORDS (16 BITS EACH)
NOTE:
0 = Relay Status
Byte
Negative values are sent in “two’s complement form”.
bit 0
bit 1
bit 2
bit 3
bit 4
bit 5
bit 6
bit 7
4-2
Relay #8 status (on/off)
Relay #7 status (on/off)
Relay #6 status (on/off)
Relay #5 status (on/off)
Relay #4 status (on/off)
Relay #3 status (on/off)
Relay #1 status (on/off - Notice relays 1 and 2
are not in numerical sequence)
Relay #2 status (on/off - Notice relays 1 and 2
are not in numerical sequence)
Chapter 4 - Discrete Transfers
1 = Remote
Function Status
Byte
bit 0
bit 1
bit 2
bit 3
bit 4
bit 5
bit 6
bit 7
Force display to Rate-of-Change mode
Add current net weight to total
Hold value on display
Hold option card updates
Force display to Net Weight mode
Toggle lbs/kg
Acquire Tare
Print Request (RS232 and BCD ports)
2 = Indicator Group
2 Status Byte
bit 0
bit 1
bit 2
bit 3
bit 4
bit 5
bit 6
bit 7
Weight currently displayed in pounds units
Zero Track feature enabled
Reserved for future use
Current Gross Weight = 0
Weight in motion, i.e. changing
Gross Weight currently displayed
Net Weight currently displayed
Weight currently displayed in kilogram units
3 = Indicator Group
1 Status Byte
bit 0
bit 1
bit 2
bit 3
bit 4
bit 5
bit 6
bit 7
Rate-of-Change currently displayed
Setpoint Relay #2 active
Setpoint Relay #1 active
Peak Force (weight) currently displayed
Totalized weight currently displayed
Reserved
Excitation Monitor Error
Reserved
4 = Dipswitch
Settings (exterior)
Status Byte
bit 0
bit 1
bit 2
bit 3
bit 4
bit 5
bit 6
bit 7
RE-calibrate toggle
Option menu keypad lockout
Setpoint menu keypad lockout
Lb/Kg, Net/Gr, Tare, Zero keypad lockout
Zero tracking enable
Reserved for future use
RS232 command lockout
Multi-Drop enable
NOTE:
If Blind Mode dip switches status not visible.
NOTE:
The PLC will receive both words with each discrete read, but it is not guaranteed that
both words will be transferred as a unit. Both words will get transferred, but there
may be some delay between the two.
NOTE:
For the PLC-2® series, you must use a 1772-SD2 scanner and the PLC-2® system to
allow communication with the HI 2151WC via block transfer. Use block transfers
only.
NOTE:
For the SLC 5/02® or above processors, you must use a 1747-SN to allow communication with the HI 2151WC via discrete transfer. The 1747-SN does not support block
transfer.
4-3
HI 2151 SERIES WEIGHT CONTROLLERS REMOTE I/O OPTION
5 = Dipswitch
Settings (interior)
Status Byte
bit 0
bit 1
bit 2
bit 3
bit 4
bit 5
bit 6
bit 7
Reserved for future use
Enables gross weight output on RS232 port once per second
Calibration lockout for NTEP (Legal for Trade) mode
Ignore incoming serial checksums (RS232 port)
Peak force is result of averaged gross weight
NTEP (Legal for Trade) mode enable
Eliminate “>” on print out (RS232 port)
Designates instrument to be in “Blind” configuration
8 = MSB of 24 Bit
Weight Value
bit 0
bit 1
bit 2
bit 3
bit 4
bit 5
bit 6
bit 7
bit 16 of weight data
bit 17 of weight data
bit 18 of weight data
bit 19 of weight data
sign bit 20
sign bit 21
sign bit 22
sign bit 23
9 = Sync Pulse
0-7
This byte increments every 50 milliseconds
(new data available)
Example of Screen
Printout
ADDRESS
17
I:000
I:001
I:002
I:003
I:004
I:005
I:006
I:007
I:010
I:011
I:012
I:013
I:014
I:015
I:016
I:017
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
CHANGE
RADIX
F1
NOTE:
4-4
0
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
SPECIFY
ADDRESS
F5
ADDRESS
17
I:020
I:021
I:022
I:023
I:024
I:025
I:026
I:027
I:030
I:031
I:032
I:033
I:034
I:035
I:036
I:037
0100
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
F8
NEXT
FILE
F9
0
0010
0110
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
PREV
FILE
The addresses begin with the letter I not the number I.
0011
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
FORCE
MONITOR
1001
0110
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
Chapter 5 - Block Transfers
CHAPTER 5 - BLOCK TRANSFERS
About Block Transfers
The ladder logic programmer is able to exchange blocks of data with a
1/4 rack device via Block Transfer instructions in the ladder logic program. A Write Block Transfer is used to send commands and data to the
Weight Controller, and a Read Block Transfer is used to collect
acknowledgments and data from the Weight Controller. It is recommended that those front panel functions to be controlled via the Remote
I/O network be locked from front panel control. Consult the HI
2151WC manuals for more information.
To utilize 20 bit resolution, the Ladder Logic program must synchronize the use of Block Transfer data to insure block integrity. Synchronization is accomplished by not using block data between the time block
transfer is enabled and done (EN and DN bits). Of course, data can be
moved to another buffer where it can be accessed while the next block
transfer is in progress. The structure of the four byte numeric format for
all weight parameters except totalized weight is as follows:
BYTE 1
Sign bits
BYTE 0
upper 4 bits
Byte 0
lower 4 bits
BYTE 3
BYTE 2
Sign bits
(all 1’s or 0’s)
Weight bits
19-16
Weight bits
15-8
Weight bits
7-0
TABLE 5-1: FOUR BYTE NUMERIC FORMAT FOR WEIGHT PARAMETERS
NOTE:
The most significant word is located before the least significant word in the block I/O
transfer.
NOTE:
Negative values are sent in “two’s complement” form.
NOTE:
The maximum block size is 51 words.
NOTE:
Block writes cannot be performed while the instrument is in the calibration mode. The
calibration must be sealed by pressing enter at Endcal.
Totalized weight uses all 32 bits available in the two words to represent
unsigned data. the block transfer commands and formats are listed in
the following tables. The Block Read commands are followed by the
Block Write commands. When writing information to the weight controller be sure to send zeros (0’s) to all words and bits marked as
“reserved for future use”. This will aid in achieving upward compatibility to future enhancements to the command set. For additional information on the function of each parameter in the tables below, consult the
HI 2151 Installation and Operation manuals.
Block Read Commands
All block read commands are initiated by the ladder logic program performing a block write to the weight controller with the desired block
command number in the first byte position of the block. the PLC then
performs a block read and the weight controller will return the desired
5-1
HI 2151 SERIES WEIGHT CONTROLLERS REMOTE I/O OPTION
information with the read command number repeated in the first byte of
the block returned. If a data error is detected, an error code “99” is in
the first byte of the returned block.
NOTE:
All block reads are initiated by performing a block write.
NOTE:
A returned value of “99” (decimal) indicates an error.
Block Read
Command Number
1: Full Status and
Weight Data
BLOCK READ COMMAND NUMBER 1: Full status and weight data
WORD DEFINITIONS:
#WORDS
Command number: A value of 1 (decimal)
bit 0
1
bit 1
0
bit 2
0
bit 3
0
bit 4
0
bit 5
0
bit 6
0
bit 7
0
Indicator Group 1 Status
bit 8
Rate-of-Change currently displayed
bit 9
Setpoint RElay #2 active
bit 10
Setpoint Relay #1 active
bit 11
Peak Force (weight) currently displayed
bit 12
Totalized weight currently displayed
bit 13
Reserved for future use
bit 14
Reserved for future use
bit 15
Reserved for future use
1
Indicator Group 2 Status
bit 0
Weight currently displayed in pounds units
bit 1
Zero Track feature enabled
bit 2
Reserved for future use
bit 3
Current gross weight = 0
bit 4
Weight in motion, i.e. changing
bit 5
Gross weight currently displayed
bit 6
Net weight currently displayed
bit 7
Weight currently displayed in Kilogram units
Dipswitch Settings (exterior) Status
bit 8
Re-calibrate toggle
bit 9
Option menu keypad lockout
bit 10
Setpoint menu keypad lockout
bit 11
Lb/Kg, Net/Gross, Tare, Zero keypad lockout
bit 12
Zero tracking enable
bit 13
Reserved for future use
bit 14
RS232 command lockout
bit 15
Multi-Drop enable (RS-422 only)
1
START
WORD
0
1
Note: When the HI 2151WC is configured as a blind unit, the status of the
dipswitches are not visible. See section on blind operation for more
information.
TABLE 5-2: BLOCK READ COMMAND NUMBER 1: FULL STATUS AND WEIGHT DATA
5-2
Chapter 5 - Block Transfers
BLOCK READ COMMAND NUMBER 1: Full status and weight data
WORD DEFINITIONS:
Dipswitch Settings (interior) Status
bit 0
Reserved for future use
bit 1
Enables gross weight output on RS232 port once per second
bit 2
Calibration lockout for NTEP (Legal for Trade) mode
bit 3
Ignore incoming serial checksums (RS232 port)
bit 4
Peak force is result of averaged gross weight
bit 5
NTEP (Legal for Trade) mode enable
bit 6
Eliminate “>” on print out (RS232 port)
bit 7
Reserved for blind unit toggle
Remote Function Status
bit 8
Force display to Rate-of-Change mode
bit 9
Add current net weight to total
bit 10
Hold value on display
bit 11
Hold option card updates
bit 12
Force display to Net weight mode
bit 13
Toggle lbs/kg
bit 14
Acquire Tare
bit 15
Print request (RS232 and BCD ports)
#WORDS
START
WORD
1
2
2
2
2
2
2
2
3
5
7
9
11
13
Note: When the HI 2151WC is configured as a blind unit, the status of the
dipswitches are not visible. See section on blind operation for more
information.
Rate-of-Change
Peak force of weight
Total weight in accumulator
Gross Weight
Net Weight
Tare Value
Note: All weight data is in the units (lbs., kgs.) which were used at the time of
calibration.
TOTAL NUMBER OF WORDS
15
TABLE 5-2: BLOCK READ COMMAND NUMBER 1: FULL STATUS AND WEIGHT DATA
5-3
HI 2151 SERIES WEIGHT CONTROLLERS REMOTE I/O OPTION
Block Read
Command Number
2: Setpoint Relay
Parameter
BLOCK READ COMMAND NUMBER 2: Setpoint Relay Parameters
WORD DEFINITIONS:
#WORDS
Command number: A value of 2 (decimal)
bit 0
0
bit 1
1
bit 2
0
bit 3
0
bit 4
0
bit 5
0
bit 6
0
bit 7
0
Indicator Group 2 Status
bit 8
Weight currently displayed in pounds units
bit 9
Zero Track feature enabled
bit 10
Reserved for future use
bit 11
Current gross weight = 0
bit 12
Weight in motion, i.e. changing
bit 13
Gross weight currently displayed
bit 14
Net weight currently displayed
bit 15
Weight currently displayed in kilogram units
1
START
WORD
0
Note: A returned value of “99” (decimal) indicates an error.
5-4
1
1
1
2
Deadband value for setpoint #1
Deadband value for setpoint #2
Deadband value for setpoint #3
Deadband value for setpoint #4
Deadband value for setpoint #5
Deadband value for setpoint #6
Deadband value for setpoint #7
Deadband value for setpoint #8
2
2
2
2
2
2
2
2
3
5
7
9
11
13
15
17
Preact value for setpoint #1
Preact value for setpoint #2
Preact value for setpoint #3
Preact value for setpoint #4
Preact value for setpoint #5
Preact value for setpoint #6
Preact value for setpoint #7
Preact value for setpoint #8
2
2
2
2
2
2
2
2
19
21
23
25
27
29
31
33
Relay Status
bit 0
bit 1
bit 2
bit 3
bit 4
bit 5
bit 6
bit 7
bit 8 - 15
Relay #8 status (on/off)
Relay #7 status (on/off)
Relay #6 status (on/off)
Relay #5 status (on/off)
Relay #4 status (on/off)
Relay #3 status (on/off)
Relay #1 status (on/off)
Relay #2 status (on/off)
Setpoint description byte A (See Table 5-4 & 5-5)
bits 0-7
bits 8-15
Setpoint description byte B (See Table 5-4 & 5-5)
Setpoint description byte C (See Table 5-4 & 5-5)
Chapter 5 - Block Transfers
BLOCK READ COMMAND NUMBER 2: Setpoint Relay Parameters
WORD DEFINITIONS:
START
WORD
#WORDS
Setpoint value for setpoint #1
Setpoint value for setpoint #2
Setpoint value for setpoint #3
Setpoint value for setpoint #4
Setpoint value for setpoint #5
Setpoint value for setpoint #6
Setpoint value for setpoint #7
Setpoint value for setpoint #8
2
2
2
2
2
2
2
2
TOTAL NUMBER OF WORDS
51
35
37
39
41
43
45
47
49
TABLE 5-3: BLOCK READ COMMAND NUMBER 2: SETPOINT RELAY PARAMETERS
Peak Force
Net Weight
Gross Weight
Rate-of-Change
Totalizer
Word 1, bits 8 - 15
0
0
0
0
1
Word 2, bits 0 - 7
0
0
1
1
0
Word 2, bits 8 - 15
0
1
0
1
0
TABLE 5-4: SETPOINT DESCRIPTION BYTES
The three setpoint description bytes are constructed by first reading the
table above to determine the 1 and 0 pattern representing the weighing
parameter you would like the setpoint to monitor, then writing that pattern below under the appropriate relay number. When patterns have
been written for all desired relays then read bytes A, B, and C across
from left to right.
SETPOINT DESCRIPTION BYTES
Relay 8
Relay 7
Relay 6
Relay 5
Relay 4
Relay 3
Relay 2
Relay 1
Word 1, bits 8-15
Word 2, bits 0-7
Word 2, bits 8-15
TABLE 5-5: SETPOIINT DESCRIPTION BYTES
Example of Proper
Setpoint Description
Bytes
The proper setpoint description bytes for the following desired Relay
types are as follows:
Relay 1 = Gross
Word 1, bits 8 - 15 = 0001 0000 = 10 (hex)
Relay 2 = Net
Word 2, bits 0 - 7 = 1110 0101 = E5 (hex)
Relay 3 = Rate-of-Change Word 2, bits 8 - 15 = 0000 0110 = 06 (hex)
Relay 4 = Peak
Relay 5 = Totalizer
Relay 6 = Gross
Relay 7 = Gross
Relay 8 = Gross
5-5
HI 2151 SERIES WEIGHT CONTROLLERS REMOTE I/O OPTION
Block Read
Command Number
3: Instrument
Identification and
Diagnostics
BLOCK READ COMMAND NUMBER 3: Instrument Identification and Diagnostics
WORD DEFINITIONS:
#WORDS
Command number: A value of 3 (decimal)
bit 0
1
bit 1
1
bit 2
0
bit 3
0
bit 4
0
bit 5
0
bit 6
0
bit 7
0
1
START
WORD
0
Instrument type by model number
bit 8
A value of 1, if set for the HI 2151
bit 9-15
Reserved for future use
Firmware revision level: (ASCII format, i.e. 65 = A)
1
1
Zero calibration analog to digital converter raw counts:
2
2
Span calibration analog to digital converter raw counts:
2
4
TOTAL NUMBER OF WORDS
6
TABLE 5-6: BLOCK READ COMMAND NUMBER 3: INSTRUMENT IDENTIFICATION AND DIAGNOSTICS
5-6
Chapter 5 - Block Transfers
Block Read
Command Number
4: Read Tare Value
BLOCK READ COMMAND NUMBER 4: Read Tare Value
WORD DEFINITIONS:
#WORDS
Command number: A value of 4 (decimal)
bit 0
0
bit 1
0
bit 2
1
bit 3
0
bit 4
0
bit 5
0
bit 6
0
bit 7
0
bits 8 - 15 Reserved for future use
1
Tare Value
2
TOTAL NUMBER OF WORDS
3
START
WORD
0
1
TABLE 5-7: BLOCK READ COMMAND NUMBER 4: READ TARE VALUE
Block Read
Command Number
5: Calibration
Parameters
BLOCK READ COMMAND NUMBER 5:Calibration Parameters
WORD DEFINITIONS:
Command number: A value of 5 (decimal)
bit 0
1
bit 1
0
bit 2
1
bit 3
0
bit 4
0
bit 5
0
bit 6
0
bit 7
0
bits 8 - 15 Reserved for future use
START
WORD
#WORDS
1
0
Units of Measure
bits 0 - 7
A value of 0 for pounds, or 1 for kilograms
Decimal point position (places to the right of the decimal)
bits 8 - 15 A value from 0 to 5
1
1
Totalizer decimal point position (places to the right of the decimal)
bis 0 - 7
A value from 0 to 5
C2™, Second Generation Calibration
bits 8 - 15 Load Cell Count
1
2
Display Graduation size (‘count by): A value of 1,2,5,10,20,50,100,200, or 500
1
3
5-7
HI 2151 SERIES WEIGHT CONTROLLERS REMOTE I/O OPTION
BLOCK READ COMMAND NUMBER 5:Calibration Parameters
WORD DEFINITIONS:
START
WORD
#WORDS
Motion Tolerance: A sixteen bit value representing the low 16 bits of the 20 bit internal weighing
range
1
4
Zero Tolerance: A sixteen bit value representing the low 16 bits of the 20 bit internal weighing range
1
5
Number of readings averaged: A value from 1 to 200
Note: Number of averages will temporarily read 200 if the instrument was in the CAL menu while
this block read occurred.
1
6
Span weight value or C2®, Second Generation reference point value‘‘
2
7
Scale Capacity (Full limit of scale): A 20 bit number in proper integer format
2
9
Mid-point Linearity Calibration Value: A 20 bit number in proper integer format
2
11
TOTAL NUMBER OF WORDS
13
TABLE 5-8: BLOCK READ COMMAND NUMBER 5: CALIBRATION PARAMETERS
Block Read
Command Number
6: Configuration of
Rate-of-Change
BLOCK READ COMMAND NUMBER 6: Configuration of Rate-of-Change
WORD DEFINITIONS:
#WORDS
Command number: A value of 6 (decimal)
bit 0
0
bit 1
1
bit 2
1
bit 3
0
bit 4
0
bit 5
0
bit 6
0
bit 7
0
bits 8 - 15 Reserved for future use
1
START
WORD
0
Displayed Rate-of-Change time units: A value of 0 to 2 (0=sec, 1=min, 2=hr)
1
1
Rate-of-Change timebase evaluation period in seconds
0 = 1 second
4 = 5 seconds
8 = 15 seconds
1 = 2 seconds
5 = 6 seconds
9 = 30 seconds
2 = 3 seconds
6 = 10 seconds 10 = 60 seconds
3 = 4 seconds
7 = 12 seconds 11 = 120 seconds
1
2
TOTAL NUMBER OF WORDS
12 = 240 seconds
13 = 450 seconds
14 = 900 seconds
15 = 1800 seconds
3
TABLE 5-9: BLOCK READ COMMAND NUMBER 6: CONFIGURATION OF RATE-OF-CHANGE
5-8
Chapter 5 - Block Transfers
Block Read
Command Number
7: BCD Output
Configuration
BLOCK READ COMMAND NUMBER 7: BCD Output Configuration
WORD DEFINITIONS:
#WORDS
Command number: A value of 7 (decimal)
bit 0
1
bit 1
1
bit 2
1
bit 3
0
bit 4
0
bit 5
0
bit 6
0
bit 7
0
1
START
WORD
0
Format of output
bit 8
If set, will update BCD output when “print” button or remote
function is activated
bit 9
Reserved for future use
bit 10
If set, will output weight data currently displayed
bit 11
If set, will output tare value
bit 12
If set, will output net weight
bit 13
If set, will output gross weight
bit 14-15
Reserved for future use
Reserved for future use
1
TOTAL NUMBER OF WORDS
2
1
TABLE 5-10: BLOCK READ COMMAND NUMBER 7: BCD OUTPUT CONFIGURATION
Block Read
Command Number
8: Configuration of
Analog Output
BLOCK READ COMMAND NUMBER 8: Configuration of Analog Output
WORD DEFINITIONS:
#WORDS
Command number: A value of 8 (decimal)
bit 0
0
bit 1
0
bit 2
0
bit 3
1
bit 4
0
bit 5
0
bit 6
0
bit 7
0
1
START
WORD
0
Weight parameter to be transmitted
bits 8 - 15 A value from 0 to 4 (0 = Gross, 1 = Net, 2 = Rate-of-Change,
3 = Peak Force, 4 = Totalize amount)
5-9
HI 2151 SERIES WEIGHT CONTROLLERS REMOTE I/O OPTION
BLOCK READ COMMAND NUMBER 8: Configuration of Analog Output
WORD DEFINITIONS:
#WORDS
START
WORD
Weight value represented by a zero scale analog output:
2
1
Weight value represented by a full scale analog output:
2
3
TOTAL NUMBER OF WORDS
5
TABLE 5-11: BLOCK READ COMMAND NUMBER 8: CONFIGURATION OF ANALOG OUTPUT
Block Read
Command Number
9: Configuration of
Standard RS232
Port (HI 2151/20WC
Only)
HI 2151/20WC Only.
BLOCK READ COMMAND NUMBER 9: Configuration of Standard RS232 Port
WORD DEFINITIONS:
#WORDS
Command number: A value of 9 (decimal)
bit 0
1
bit 1
0
bit 2
0
bit 3
1
bit 4
0
bit 5
0
bit 6
0
bit 7
0
bits 8 - 15 Reserved for future use
1
0
Format of Communication:
bit 0
Print initiation (If configured as printer. 1 = print button
0 = continuous. If configured as bi-directional: 0 = print button,
1 = altered print).
bit 1
Setpoint, Deadbands, and Preact values transmitted
bit 2
Rate-of-Change transmitted
bit 3
Tare weight transmitted
bit 4
Net weight transmitted
bit 5
Gross weight transmitted
bit 6
Reserved for future use
bit 7
Reserved for future use
bits 8 - 15 Reserved for future use
1
1
Port Configuration
bits 0 - 7
A value of 0 or 1 [0=Bi-Directional, 1 = Printer (output) only]
Baud Rate
bits 8 - 15 A value of 0 to 5 (0 = 600, 1 = 1200, 2 = 2400, 3 = 4800,
4 = 9600, 5 = 19200)
1
2
Parity
1
3
bits 0 - 7
Stop Bits
bits 8 - 15
A value of 0 to 2 (0=None, 1 = 1 = Even, 2 = Odd)*
A value of 0 or 1 (0=one stop bit, 1 = two stop bits)*
*Note: Parameters are not used in the HI 2151/30WC
5-10
START
WORD
Chapter 5 - Block Transfers
BLOCK READ COMMAND NUMBER 9: Configuration of Standard RS232 Port
WORD DEFINITIONS:
#WORDS
Word Length
bits 0 - 7
A value of 0 or 1 [0 = seven bits, 1 = eight bits*
Handshake Control
bits 8 - 15 A value of 0 or 1 (0 = Hardware, 1 = Software
START
WORD
1
4
1
5
*Note: Parameters are not used in the HI 2151/30WC
Echo
bits 0 - 7
Device Address
bits 8 - 15
A value of 0 or 1 (0= Off, 1 = On)
A value from 0 to 99
TOTAL NUMBER OF WORDS
6
TABLE 5-12: BLOCK READ COMMAND NUMBER 9: CONFIGURATION OF STANDARD RS232 PORT
Block Read
Command Number
10: Sticker Value
NOTE:
HI 2151/20WC Only.
Sticker Value is not used in the HI 2151/30WC
BLOCK READ COMMAND NUMBER 10: Sticker Value (HI 2151/20SC Only)
WORD DEFINITIONS:
#WORDS
Command number: A value of 10 (decimal)
bit 0
0
bit 1
1
bit 2
0
bit 3
1
bit 4
0
bit 5
0
bit 6
0
bit 7
0
bits 8 - 15 Reserved for future use
1
Sticker Value
A 20 bit number in proper integer format
2
TOTAL NUMBER OF WORDS
3
START
WORD
0
1
TABLE 5-13: BLOCK READ COMMAND NUMBER 10: STICKER VALUE
5-11
HI 2151 SERIES WEIGHT CONTROLLERS REMOTE I/O OPTION
Block Read
Command Number
11: Auto Zero
Tolerance
BLOCK READ COMMAND NUMBER 11: Auto Zero Tolerance
WORD DEFINITIONS:
#WORDS
Command number: A value of 11 (decimal)
bit 0
1
bit 1
1
bit 2
0
bit 3
1
bit 4
0
bit 5
0
bit 6
0
bit 7
0
bits 8 - 15 Reserved for future use
1
Auto Zero Tolerance
A 16 bit number in proper integer format
1
TOTAL NUMBER OF WORDS
2
START
WORD
0
1
TABLE 5-14: BLOCK READ COMMAND NUMBER 11: AUTO ZERO TOLERANCE
Block Read
Command Number
12: Integrated
Technician
NOTE:
5-12
HI 2151/30WC Only.
Integrated Technician is not used with the HI 2151/20WC
Chapter 5 - Block Transfers
BLOCK READ COMMAND NUMBER 12: Integrated Technician
WORD DEFINITIONS:
#WORDS
Command number: A value of 12 (decimal)
bit 0
0
bit 1
0
bit 2
1
bit 3
1
bit 4
0
bit 5
0
bit 6
0
bit 7
0
bit 8
Reserved for future use
1
Excitation Monitor
1
On/Off
bits 0 - 7
A value of 0 or 1 (0 = Off, 1 = On)
OK/ERR
bits 8 - 15
A value of 0 or 1 (o = OK, 1 = ERR)
TOTAL NUMBER OF WORDS
START
WORD
0
1
2
TABLE 5-15: BLOCK READ COMMAND NUMBER 12: INTEGRATED TECHNICIAN
Block Transfer Read
Example
This routine is set up to be used with the HI 2151WC series weight
controllers. It is a Block Transfer Read (BTR) sub-routine, currently
configured to do a BTR 2 of the relay setpoint data. The block length is
the only value which needs to be changed to use other block transfer
read types. This routine will continually read the HI 2151WC as long as
it is running.
N21:0 will have a 2, to request a block transfer read #2.
5-13
HI 2151 SERIES WEIGHT CONTROLLERS REMOTE I/O OPTION
FIG. 5-1 BLOCK TRANSFER READ EXAMPLE
Block Write Commands
About Block Write
Commands
After the PLC performs a block transfer write, a block read should be
performed to evaluate the response code from the HI 2151 to verify that
the data was received and implemented. The response word will either
show a successful processing of the block or will indicate the first error
encountered in processing of the data.
NOTE:
Setpoints, deadbands and preacts can all accept negative values. To enter negative
values, use the “twos complement” method.
NOTE:
Block Writes cannot be performed while the instrument is in calibration mode. The
calibration must be sealed by pressing enter at Endcal.
5-14
Chapter 5 - Block Transfers
Block Write
Command Number
51: Activate Scale
Functions
BLOCK WRITE COMMAND NUMBER 51: Activate Scale Functions
WORD DEFINITIONS:
#WORDS
Command number: A value of 51 (decimal)
bit 0
1
bit 1
1
bit 2
0
bit 3
0
bit 4
1
bit 5
1
bit 6
0
bit 7
0
1
START
WORD
0
Remote Functions Byte
bit 8
Acquire TARE (Set tare value = current gross weight)*
bit 9
Initiates print on standard RS232 or optional BCD port*
bit 10
Add current Net weight to Total*!
bit 11
Clear Peak Hold register*!
bit 12
bit 13
bit 14
bit 15
Clear Totalizer Accumulation*!
Zero the instrument*
Enable Zero Tracking (Blind Unit Only)
Reserved for future use
*Note: The bit must be toggled to activate this function
!Note: Only active if the instrument is ordered with this option
TOTAL NUMBER OF WORDS
1
TABLE 5-16: BLOCK WRITE COMMAND NUMBER 51: ACTIVATE SCALE FUNCTIONS
5-15
HI 2151 SERIES WEIGHT CONTROLLERS REMOTE I/O OPTION
Block Write
Command Number
52: Downloading
Setpoint Relay
Parameters
BLOCK WRITE COMMAND NUMBER 52:Downloading Setpoint Relay Parameters
WORD DEFINITIONS:
START
WORD
#WORDS
Command number: A value of 52 (decimal)
bit 0
0
bit 1
0
bit 2
1
bit 3
0
bit 4
1
bit 5
1
bit 6
0
bit 7
0
bits 8 - 15 Reserved for future use
1
0
Setpoint Enable:
bit 8
Enable Relay #8 to evaluate weight
bit 9
Enable Relay #7 to evaluate weight
bit 10
Enable Relay #6 to evaluate weight
bit 11
bit 12
bit 13
bit 14
bit 15
Enable Relay #5 to evaluate weight
Enable Relay #4 to evaluate weight
Enable Relay #3 to evaluate weight
Enable Relay #1 to evaluate weight*
Enable Relay #2 to evaluate weight*
*Note: Notice relays 1 and 2 are not in numerical sequence
Force Relay Status*
bit 0
Turn relay #8 on regardless of weight (setpoint enable bit must be 0)
bit 1
Turn relay #7 on regardless of weight (setpoint enable bit must be 0)
bit 2
Turn relay #6 on regardless of weight (setpoint enable bit must be 0)
bit 3
Turn relay #5 on regardless of weight (setpoint enable bit must be 0)
bit 4
Turn relay #4 on regardless of weight (setpoint enable bit must be 0)
bit 5
Turn relay #3 on regardless of weight (setpoint enable bit must be 0)
bit 6
Turn relay #1 on regardless of weight (setpoint enable bit must be 0)
bit 7
Turn relay #2 on regardless of weight (setpoint enable bit must be 0)
1
1
1
2
2
2
2
2
2
2
2
2
3
5
7
9
11
13
15
17
*Note: Force relay on/off is only available over this interface. If you desire to manually set a relay to
trigger on a weight parameter, make sure force relay bit is set to 0.
bits 8 - 15
Setpoint description byte A (See Table 5-18 & 5-19)
bits 0 - 7
Setpoint description byte B (See Table 5-18 & 5-19)
bits 8 - 15
Setpoint description byte C (See Table 5-18 & 5-19)
Deadband value for setpoint #1
Deadband value for setpoint #2
Deadband value for setpoint #3
Deadband value for setpoint #4
Deadband value for setpoint #5
Deadband value for setpoint #6
Deadband value for setpoint #7
Deadband value for setpoint #8
5-16
Chapter 5 - Block Transfers
BLOCK WRITE COMMAND NUMBER 52:Downloading Setpoint Relay Parameters
WORD DEFINITIONS:
START
WORD
#WORDS
Preact value for setpoint #1
Preact value for setpoint #2
Preact value for setpoint #3
Preact value for setpoint #4
Preact value for setpoint #5
Preact value for setpoint #6
Preact value for setpoint #7
Preact value for setpoint #8
2
2
2
2
2
2
2
2
19
21
23
25
27
29
31
33
Setpoint value for setpoint #1
Setpoint value for setpoint #2
Setpoint value for setpoint #3
Setpoint value for setpoint #4
Setpoint value for setpoint #5
Setpoint value for setpoint #6
Setpoint value for setpoint #7
Setpoint value for setpoint #8
2
2
2
2
2
2
2
2
35
37
39
41
43
45
47
49
TOTAL NUMBER OF WORDS
51
TABLE 5-17: BLOCK WRITE COMMAND NUMBER 52: DOWNLOADING SETPOINT RELAY PARAMETERS
NOTE:
Deadband must be numerically larger than preact.
Peak Force
Net Weight
Gross Weight
Rate-of-Change
Totalizer
Word 1, bits 8 - 15
0
0
0
0
1
Word 2, bits 0 - 7
0
0
1
1
0
Word 2, bits 8 - 15
0
1
0
1
0
TABLE 5-18: SETPOINT DESCRIPTION BYTES
The three setpoint description bytes are constructed by first reading the
table above to determine the 1 and 0 pattern representing the weighing
parameter you would like the setpoint to monitor, then writing that pattern below under the appropriate relay number. When patterns have
been written for all desired relays then read bytes A, B, and C across
from left to right.
SETPOINT DESCRIPTION BYTES
Relay 8
Relay 7
Relay 6
Relay 5
Relay 4
Relay 3
Relay 2
Relay 1
Word 1, bits 8-15
Word 2, bits 0-7
Word 2, bits 8-15
TABLE 5-19: SETPOIINT DESCRIPTION BYTES
Example of Proper
Setpoint Description
Bytes
The proper setpoint description bytes for the following desired Relay
types are as follows:
Relay 1 = Gross
Word 1, bits 8 - 15 = 0001 0000 = 10 (hex)
5-17
HI 2151 SERIES WEIGHT CONTROLLERS REMOTE I/O OPTION
Relay 2 = Net
Word 2, bits 0 - 7 = 1110 0101 = E5 (hex)
Relay 3 = Rate-of-Change Word 2, bits 8 - 15 = 0000 0110 = 06 (hex)
Relay 4 = Peak
Relay 5 = Totalizer
Relay 6 = Gross
Relay 7 = Gross
Relay 8 = Gross
Block Write
Command Number
53: Send Tare Value
BLOCK WRITE COMMAND NUMBER 53:Send Tare Value
WORD DEFINITIONS:
#WORDS
Command number: A value of 53 (decimal)
bit 0
1
bit 1
0
bit 2
1
bit 3
0
bit 4
1
bit 5
1
bit 6
0
bit 7
0
bit 8 -15
Reserved for future use
1
Tare Value
2
TOTAL NUMBER OF WORDS
3
START
WORD
0
1
TABLE 5-20: BLOCK WRITE COMMAND NUMBER 53: SEND TARE VALUE
5-18
Chapter 5 - Block Transfers
Block Write
Command Number
54: Scale
Calibration Action
BLOCK WRITE COMMAND NUMBER 54: Scale Calibration Action
WORD DEFINITIONS:
#WORDS
Command number: A value of 54 (decimal)
bit 0
0
bit 1
1
bit 2
1
bit 3
0
bit 4
1
bit 5
1
bit 6
0
bit 7
0
1
START
WORD
0
Remote Functions Byte
bit 8
Setting then clearing this bit tells the instrument that current
weight is an empty scale.
bit 9
Setting then clearing this bit tells the instrument that current
weight is span weight.
bit 10
Setting then clearing this bit stores critical data in the Secure
Memory Module.
bit 11
Setting then clearing this bit restores critical data from the
Secure Memory Module.
bit 12
Setting then clearing this bit tells the instrument that current
weight is Midpoint Linearity value.
bit 13
Reserved for future use
bit 14
Setting then clearing this bit tells the instrument that current
weight is the C2™ reference point.
bit 15
Reserved for future use
TOTAL NUMBER OF WORDS
1
TABLE 5-21: BLOCK WRITE COMMAND NUMBER 54: SCALE CALIBRATION ACTION
5-19
HI 2151 SERIES WEIGHT CONTROLLERS REMOTE I/O OPTION
Block Write
Command Number
55: Calibration
Parameters
BLOCK WRITE COMMAND NUMBER 55: Calibration Parameters
WORD DEFINITIONS:
#WORDS
Command number: A value of 55 (decimal)
bit 0
1
bit 1
1
bit 2
1
bit 3
0
bit 4
1
bit 5
1
bit 6
0
bit 7
0
bit 8 - 15
Reserved for future use
1
START
WORD
0
Units of Measure:
bits 0 - 7
0 = pounds, 1 = kilograms
Decimal point position (places to right of decimal):
bits 8 - 15 A value from 0 to 4
1
1
Totalizer decimal point position (places to right of decimal):
bits 0 - 7
A value from 0 to 4
C2™, Second Generation Calibration
bits 8 - 15 Load Cell Count (set to zero for Hard Cal)
1
2
Display Graduation Size (“count by”): A value of 1,2,5,10,20,50,100,200 or 500
1
3
Motion Tolerance: A sixteen bit value representing the lower 16 bits of the 20 bit
internal weighing range
1
4
Zero Tolerance: A sixteen bit value representing the lower 16 bits of the 20 bit internal weighing range
1
5
Number of readings averaged: A value from 1 to 200
1
6
Span weight value (Use one of the following methods. Method one, with C2, Second Generation Calibration: Use the C2 reference point when using C2 load cells.
Method two: use test weights for calibration) A 20 bit number in proper integer format
2
7
Scale Capacity (Full limit of scale): A 20 bit number in proper integer format
2
9
Mid-point Linearity calibration value: A 20 bit number in proper integer format
2
11
TOTAL NUMBER OF WORDS
13
TABLE 5-22: BLOCK WRITE COMMAND NUMBER 55: CALIBRATION PARAMETERS
5-20
Chapter 5 - Block Transfers
Block Write
Command Number
56: Configuration of
Rate-of-Change
BLOCK WRITE COMMAND NUMBER 56: Configuration of Rate-of-Change
WORD DEFINITIONS:
#WORDS
Command number: A value of 56 (decimal)
bit 0
0
bit 1
0
bit 2
0
bit 3
1
bit 4
1
bit 5
1
bit 6
0
bit 7
0
bit 8 - 15
Reserved for future use
1
START
WORD
0
Displayed Rate-of-Change time units: A value of 0 to 2 (0 = sec, 1 = min, 2 = hr)
1
1
Rate-of-Change timebase evaluation period: A value of 0 to 15 from list below:
0 = 1 second
4 = 5 seconds
8 = 15 seconds
12 = 240 seconds
1 = 2 seconds
5 = 6 seconds
9 = 30 seconds
13 = 450 seconds
2 = 3 seconds
6 = 10 seconds 10 = 60 seconds
14 = 900 seconds
3 = 4 seconds
7 = 12 seconds 11 = 120 seconds 15 = 1800 seconds
1
2
TOTAL NUMBER OF WORDS
3
TABLE 5-23: BLOCK WRITE COMMAND NUMBER 56: CONFIGURATION OF RATE-OF-CHANGE
5-21
HI 2151 SERIES WEIGHT CONTROLLERS REMOTE I/O OPTION
Block Write
Command Number
57: BCD Output
Configuration
BLOCK WRITE COMMAND NUMBER 57: BCD Output Configuration
WORD DEFINITIONS:
#WORDS
Command number: A value of 57 (decimal)
bit 0
1
bit 1
0
bit 2
0
bit 3
1
bit 4
1
bit 5
1
bit 6
0
bit 7
0
1
START
WORD
0
Format of output:
bit 8
If set, will update BCD output when “print” button or remote
function is activated.
bit 9
Reserved for future use
bit 10
If set, will output weight data currently displayed
bit 11
If set, will output Tare Value
bit 12
If set, will output Net Weight
bit 13
If set, will output Gross Weight
bit 14 - 15 Reserved for future use
TOTAL NUMBER OF WORDS
1
TABLE 5-24: BLOC WRITE COMMAND NUMBER 57: BCD OUTPUT CONFIGURATION
Block Write
Command Number
58: Configuration of
Analog Output
NOTE:
This command is only active if this option is installed in the HI 2151WC
BLOCK WRITE COMMAND NUMBER 58: Configuration of Analog Output
WORD DEFINITIONS:
#WORDS
Command number: A value of 58 (decimal)
bit 0
0
bit 1
1
bit 2
0
bit 3
1
bit 4
1
bit 5
1
bit 6
0
bit 7
0
1
Weight parameter to be transmitted
bits 8 - 15 A value from 0 to 4 (0 = Gross, 1 = Net, 2 = Rate-of-Change,
3 = Peak Force, 4 = Totalized Amount)
5-22
START
WORD
0
Chapter 5 - Block Transfers
BLOCK WRITE COMMAND NUMBER 58: Configuration of Analog Output
WORD DEFINITIONS:
#WORDS
START
WORD
Weight value represented by a zero scale analog output:
2
1
Weight value represented by a full scale analog output:
2
3
TOTAL NUMBER OF WORDS
1
TABLE 5-25: BLOCK WRITE COMMAND NUMBER 58: CONFIGURATION OF ANALOG OUTPUT
Block Write
Command Number
59: Configuration of
Standard RS232
Port
HI 2151/20WC Only.
BLOCK WRITE COMMAND NUMBER 59: Configuration of Standard RS232 Port
WORD DEFINITIONS:
#WORDS
Command number: A value of 59 (decimal)
bit 0
1
bit 1
1
bit 2
0
bit 3
1
bit 4
1
bit 5
1
bit 6
0
bit 7
0
bits 8 - 15 Reserved for future use
1
START
WORD
0
Format of Communication
bit 0
Print Initiation (1 = altered print, bit 6 must = 0)
bit 1
Setpoint, Deadbands, and Preact values transmitted
bit 2
Rate-of-Change Transmitted
bit 3
Tare Weight Transmitted
bit 4
Net Weight Transmitted
bit 5
Gross Weight Transmitted
bit 6
Print initiation (0 = continuous, 1 = print button, bit 0 must = 0
bit 7 - 15
Reserved for future use
1
1
Port Configuration
bits 0 - 7
A value of 0 or 1 (0 = Bi-Directional, 1 = Printer (output) only)
Baud Rate
bits 8 - 15 A value of 0 to 5 (0 = 600, 1 = 1200, 2 = 2400, 3 = 4800,
4 = 9600, 5 = 19200
1
2
Parity
1
3
1
4
bits 0 - 7
Stop Bits
bits 8 - 15
A value of 0 to 2 (0 = None, 1 = Even, 2 = Odd)*
A value of 0 or 1 (0 = one stop bit, 1 = two stop bits)*
*Note: Parameters not set by HI 2151/30
Word Length
bits 0 - 7
A value of 0 or 1 (0 = seven bits, 1 = eight bits)*
Handshake Control
bits 8 - 15 A value of 0 or 1 (0 = Hardware, 1 = Software)
*Note: Parameters not set by HI 2151/30
5-23
HI 2151 SERIES WEIGHT CONTROLLERS REMOTE I/O OPTION
BLOCK WRITE COMMAND NUMBER 59: Configuration of Standard RS232 Port
WORD DEFINITIONS:
#WORDS
1
Echo
bits 0 - 7
Device Address
bits 8 - 15
START
WORD
5
A value of 0 or 1 (0 = OFF, 1 = ON)
A value of 0 to 99
TOTAL NUMBER OF WORDS
6
TABLE 5-26: BLOCK WRITE COMMAND NUMBER 59: CONFIGURATION OF STANDARD RS232 PORT
Block Write
Command Number
60: Sticker Value
NOTE:
Not used with the HI 2151/30WC
BLOCK WRITE COMMAND NUMBER 60: Sticker Value
WORD DEFINITIONS:
#WORDS
Command number: A value of 60 (decimal)
bit 0
0
bit 1
0
bit 2
1
bit 3
1
bit 4
1
bit 5
1
bit 6
0
bit 7
0
bits 8 - 15 Reserved for future use
1
Sticker Value
A 20 bit number in proper integer format
2
TOTAL NUMBER OF WORDS
3
START
WORD
0
1
TABLE 5-27: BLOCK WRITE COMMAND NUMBER 60: STICKER VALUE
5-24
Chapter 5 - Block Transfers
Block Write
Command Number
61: Auto Zero
Tolerance
BLOCK WRITECOMMAND NUMBER 61: Auto Zero Tolerance
WORD DEFINITIONS:
#WORDS
Command number: A value of 61 (decimal)
bit 0
1
bit 1
0
bit 2
1
bit 3
1
bit 4
1
bit 5
1
bit 6
0
bit 7
0
bits 8 - 15 Reserved for future use
1
Auto Zero Tolerance
A 16 bit number in proper integer format
1
TOTAL NUMBER OF WORDS
2
START
WORD
0
1
TABLE 5-28: BLOCK WRITE COMMAND NUMBER 61: AUTO ZERO TOLERANCE
Block Write
Command Number
62: Waversaver/
Excitation Monitor
HI 2151/30WC Only.
BLOCK WRITE COMMAND NUMBER 62: Waversaver/Excitation Monitor
WORD DEFINITIONS:
#WORDS
Command number: A value of 62 (decimal)
bit 0
0
bit 1
1
bit 2
1
bit 3
1
bit 4
1
bit 5
1
bit 6
0
bit 7
0
1
Waversaver
bits 8 - 15
START
WORD
0
Waversaver setting (1-5) (Error #87 returned if an error)
Excitation Monitor
bit 0
0 = Disable Excitation Monitor, 1 = Enable Excitation Monitor
bits 1 - 15 Reserved for future use
1
TOTAL NUMBER OF WORDS
2
1
TABLE 5-29: BLOCK WRITE COMMAND 62: WAVERSAVER/EXCITATION MONITOR
5-25
HI 2151 SERIES WEIGHT CONTROLLERS REMOTE I/O OPTION
Block Transfer Write
Example
This is a Block Transfer Write (BTW) sub-routine, currently configured to do a BTW 52 of the relay setpoint data. The block length is the
only value which needs to be changed to use other block transfer write
types. Once called, the routine will write the block until a return code
of 06 (BTW OK) is sent.
A value of 70 is at N 11:60
B 3:0 will enable routine and is cleared when completed
Valid BTW Data starts at N 11:0
5-26
Chapter 5 - Block Transfers
FIG. 5-2 BLOCK TRANSFER WRITE EXAMPLE
Integer to Floating
Point Routine
This example assumes the two words representing the desired weight
value have been read with a block transfer read. They must also reside
5-27
HI 2151 SERIES WEIGHT CONTROLLERS REMOTE I/O OPTION
as MSW in memory location N10:9, and as LSW in memory location
N10:10. This routine works for all values except the totalizer.
NOTE:
5-28
All negative numbers are sent from the weight controller to the programmable controller in “twos complements”
Chapter 5 - Block Transfers
FIG. 5-3 INTEGER TO FLOATING POINT ROUTINE
Response and Error
Codes
Each time the PLC performs a block write, it should then perform the
response code block read. This block read will return two bytes. The
first byte is the command number of the last block write performed.
The second byte will be the response or error code returned. If the error
code is a NACK (21) then the returned command number will be a 99.
5-29
HI 2151 SERIES WEIGHT CONTROLLERS REMOTE I/O OPTION
BLOCK READ COMMAND NUMBER 70: Reading response code after a block write
WORD DEFINITIONS
# WORDS
START
WORD
Write command number (not 70 but the command number of the write performed)
Bits 0 - 7
1
0
Response code from table below
Bits 8-15
TOTAL NUMBER OF WORDS
1
TABLE 5-30: BLOCK READ COMMAND NUMBER 70: READING RESPONSE CODE AFTER A BLOCK WRITE
Block Read or Block
Write Error Codes
Block Write Error
Codes
Error Codes for
Block Write 59
5-30
Decimal
06
21
22
HEX
06
15
16
Description
Acknowledge good data received
NACK - illegal command
Exceeded maximum legal words for block read and
write
In CAL mode
23
17
49
31
50
32
51
52
33
34
53
54
55
56
35
36
37
38
57
39
58
3A
59
60
61
62
63
64
65
66
3B
3C
3D
3E
3F
40
41
42
Scale in motion (for example: unable to calibrate
while in motion)
Current weight sensed over scale capacity (only
functional for command 51)
Weight not within zero tolerance, unable to zero
Insufficient change in weight to calibrate span
(display error #18)
Decimal point places must be between 0 and 4
Not a valid graduation size
Motion value must be greater than graduation size
Zero tolerance value must be greater than
0 and positive.
Acceptable number of averages is between
1 and 200
Span weight value, during calibration, must be
positive
Scale capacity value must be positive
Midpoint linearity value must be positive
Rate-of-Change time units selection must be 0,1 or 2
Rate-of-Change time base out of range
BCD option not installed
Invalid BCD card bit request
Analog output not installed
Analog output request must be between 0 and 4
67
68
69
70
43
44
45
46
Invalid serial port (RS-232) format request
Serial configuration values 0 or 1
Baud rate request out of range
Parity request out of range, must be 0,1,or 2
Chapter 5 - Block Transfers
71
72
73
74
75
47
48
49
4A
4B
Stop bits must be 0 or 1
Data length must be 0 or 1
Control (Hardware or Software) must be 0 or 1
Device Address must be between 0 and 99
Echo request must be a 0 or 1
Error Code for Block
Write Command #53
76
4C
Tare greater than span
Error Code for Block
Write Command #51
77
4D
Blind unit option only
Error Code for Block
Write Command #55
96
97
98
99
100
60
61
62
63
64
Load cell count error
No C2™ load cells found
Load cell capacity/sensitivity error
Load cell checksum error
Too many significant digits after the decimal to be
displayed.
5-31
Chapter 6 - Conversions Charts and Formulas
CHAPTER 6 - CONVERSION CHARTS AND FORMULAS
Hex Chart
Relay Status
Example
Use the Hex Chart to translate bit values to a hex value.
For example the bit representative of the Relay status byte when setpoint relays 8,5,3, and 1 are on is (01101001). This eight bit value is
represented by two four bit nibbles (0110 and 1001). Looking at the
table we see this is equal to a Hex value of 69.
Bit 3
Bit 2
Bit 1
Bit 0
Bit 7
Bit 6
Bit 5
Bit 4
0
0
0
0
0
0
0
0
1
1
0
0
1
0
2
0
0
1
1
3
0
1
0
0
4
0
1
0
1
5
0
1
1
0
6
0
1
1
1
7
1
0
0
0
8
1
0
0
1
9
1
0
1
0
A
1
0
1
1
B
1
1
0
0
C
1
1
0
1
D
1
1
1
0
E
1
1
1
1
F
Hex Value
TABLE 6-1: HEX CHART
Bit #
Bit Status
Bit 0
1 = On
Bit 1
0 = Off
Bit 2
0 = Off
Bit 3
1 = On
Hex
Description
Relay #8 status (on/off)
Relay #7 status (on/off)
9
Relay #6 status (on/off)
Relay #5 status (on/off)
TABLE 6-2: RELAY STATUS
6-1
HI 2151 SERIES WEIGHT CONTROLLERS REMOTE I/O OPTION
Bit #
Bit Status
Bit 4
0 = Off
Bit 5
1 = On
Bit 6
1 = On
Bit 7
0 = Off
Hex
Description
Relay #4 status (on/off)
Relay #3 status (on/off)
6
Relay #1 status (on/off)
Relay #2 status (on/off)
TABLE 6-2: RELAY STATUS
Bit #
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Decimal Value
32768
16384
8192
4096
2048
1024
512
256
128
64
32
16
8
4
2
1
ONE WORD
TABLE 6-3: BINARY TO DECIMAL CHART
Block Write
Example
The following is an example using block write #51 to zero the scale.
Command #51 is made up of one word. Bits 0-7 represent the address
or the command number (00110011 = 51). To activate the scale function, toggle bit #13. This creates a word which has a decimal value of
8,243.
Bit #
0
0
1
0
0
0
0
0
0
0
1
1
0
0
1
1
TABLE 6-4: BLOCK WRITE EXAMPLE
Math Conversion
Programs
Math conversion routines, written in ladder logic convert the twenty bit
integer data available from the HI 2151WC to a PLC floating point format. Conversely, routines can convert from Floating Point to integer.
To convert from integer to floating point, your ladder logic program
would follow these steps:
Step 1. Convert the lower sixteen bits into a floating point number.
Step 2. Test the seventeenth bit (bit 16) and if set, add 65,536 to the
floating point number.
Step 3. Test each subsequent bit and add the appropriate numeric
value to the floating point number.
6-2
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