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DiaLog Elite PLC Interface Manual    

Initializing the Modbus Master Interface Option 

 

This chapter provides information for setting up the PLC Interface for operation with a 
PLC or Modbus Slave connected to the RS-232 port. 

 

The RS-232 port is a male DB9 connection configured as a DTE device.  The pin out of 
this connector is: 

 Pin 

2  RX 

 Pin 

3  TX 

 Pin 

5  GND 

 

 

The Modbus Master Interface is setup by defining the: 

 

Serial port baud rate – default is 38400 

 

PLC/Modbus ID – default is 1 

 

Defining Elite I/O slots to be identified as PLC/Modbus I/O – default is that no slots 
are enabled as PLC I/O slots.   

There are 8 PLC I/O channels per Slot.  You can enable as many slots as you have 
purchased.  For example, if you purchased a 32-channel PLC configuration, then you 
can enable any 4 slots which do not have physical I/O cards attached. 

 

All of these can be defined either through the integral keypad or remotely via a phone. 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

©

 Antx, inc. 2001 

 

  Version 1.2 

3

 

 

Содержание DiaLog Elite

Страница 1: ...DiaLog Elite Modbus Master Interface Manual Publish Date August 1 2003 Document Version 1 2 ...

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Страница 3: ...ry notices and copyright information that should be observed Information in this document is subject to change without notice The software described in this document is furnished under a license agreement or nondisclosure agreement The software may be used or copied only in accordance with the terms of those agreements No part of this publication may be reproduced stored in a retrieval system or t...

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Страница 5: ...e Option 1 2 Initializing the Modbus Master Interface Option 3 From the front panel 4 Remotely over a phone 5 3 Mapping Elite channels to Modbus registers 7 Programming channel parameters 9 Digital Inputs 10 Analog Inputs 11 Relay Outputs 13 4 Running the Modbus Master Interface 15 Viewing Alarms 15 Modbus Comm Failure Alarm 16 I O channel alarm 16 Confirming Modbus Slave Communication 16 ...

Страница 6: ...DiaLog Elite PLC Interface Manual ii Version 1 2 Antx inc 2001 ...

Страница 7: ...to Use this Guide This guide is divided into the following chapters Chapter 1 What is the Modbus Master Interface Option Describes the capabilities of the Modbus Master interface option Chapter 2 Initializing the Modbus Master Interface Option Describes how to set up the Interface for operation with a PLC or Modbus I O Chapter 3 Mapping Elite channels to PLC registers Describes how to program the ...

Страница 8: ...next number on the list Courier font Indicates messages shown on the DiaLog display or information printed on reports EXAMPLE If parameters for channel 7 were set up as follows then this message appears on the pager s display NORTHWEST FACILITY 7 NO 2 TANK LEVEL HI 101 5 GALS Text enclosed in quotes Indicates messages that DiaLog speaks EXAMPLE The power on diagnostics take about 45 seconds to com...

Страница 9: ...e Menu Sequence headings 0 1 2 3 EXAMPLE 4 5 6 7 9 Æ 0 Æ 3 8 9 Means to press the keys 9 0 and 3 to reach the command Road Map Þ This heading and icon is used at the beginning of a function description to indicate the complete key sequence that the user takes to reach the function being described The Road Map also includes other parameters within that function EXAMPLE Channel Configuration Relay O...

Страница 10: ...ake into consideration when performing an action Cautions not followed could result in danger WARNING Ì This heading and icon in the margin indicates advice to heed when performing an action Warnings not followed could result in damage to the equipment or personal harm NOTE This heading and icon in the margin indicates any exceptions or additional points to the topic being discussed EXAMPLE This h...

Страница 11: ...ts coils Values that are read from the Modbus Slave are interpreted by the Elite the same as if they were physical I O in the Elite All the alarm and control logic within the Elite operate on data coming from Modbus registers The communications link between the Elite and the PLC is monitored several times a second If the communications link stops functioning after repeated attempts a Communication...

Страница 12: ...DiaLog Elite PLC Interface Manual 2 Version 1 2 Antx inc 2001 ...

Страница 13: ...Master Interface is setup by defining the Serial port baud rate default is 38400 PLC Modbus ID default is 1 Defining Elite I O slots to be identified as PLC Modbus I O default is that no slots are enabled as PLC I O slots There are 8 PLC I O channels per Slot You can enable as many slots as you have purchased For example if you purchased a 32 channel PLC configuration then you can enable any 4 slo...

Страница 14: ...ptions setup Enter selection Press 0 Status Valid values are 1200 2400 4800 9600 19200 38400 default 115200 Serial Port Setup Press Pound if OK or enter a new value Enter your baud rate For example 9 6 0 0 The new rate is 9 thousand 6 hundred Enter selection Press 2 Run MODBUS PLC Setup Enter selection Press 0 Status Enter the Modbus ID for the PLC For example The PLC ID number is 1 Press Pound if...

Страница 15: ...t 90 Enter Slot Number For example 3 MODBUS slot 3 is disabled Press if OK 0 to disable or 1 to enable 1 MODBUS slot 3 is enabled Enter Slot Number Repeat entering Slot numbers as needed When finished Press Home Program mode activated System ready Enter selection Remotely over a phone The sequence is exactly the same as from the front panel except that instead of pressing the HOME key press 6 Antx...

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Страница 17: ...ut Status Digital 02 3 Read Holding Register Analog 03 4 Read Input Register Analog 04 5 Write Coil Relay 05 The register type and register number are defined in the Channel Configuration section of the Elite NOTE Register types Function Codes can be mixed within a single slot in the Elite For example If Slot 70 is a PLC Modbus I O slot channel 71 can be a Read Coil Status 1 channel 72 can be a Ho...

Страница 18: ... register number is 50 Digital input channel 71 Enter selection Press Channel Configuration Enter channel number Press 7 2 The register type is unknown Press if OK or enter a new selection Press 3 The new register type is holding Register number is 0 Press if OK or enter a new value Press 1 2 1 The new register number is 121 Analog input channel 72 Enter selection Press Channel Configuration Enter...

Страница 19: ...ramming is exactly the same as for physical channels in the Elite so this section will not detail the specifics of the programming but outline the structure and refer the user to the Elite User Manual for further reference While the Elite supports 5 register types or Function Codes these are mapped to three 3 types of I O channels in the Elite Digital inputs Analog inputs Relay outputs Antx inc 20...

Страница 20: ...lizer Limit 0 999 999 999 counts 0 Scaling Value 1 1000 1 Engineering Units 0 27 0 1 Duration Limit 0 999 999 999 secs 0 2 Limit Reset Period 0 999 999 mins 0 3 Reset Counters on Acknowledge 0 Disabled 1 Enabled 3 Alarm Delay 0 65535 seconds 3 4 Continue alarm notification if return to normal 0 Disabled 1 Enabled 5 Telephone list 1 16 1 6 Relay channel to activate 0 disabled 11 98 Relay state on N...

Страница 21: ...eit 6 gallons 7 liters 8 pounds 9 kilograms 1 0 gallons per minute 1 1 gallons per hour 1 2 million gallons per hour 1 3 liters per hour 1 4 cubic inches per second 1 5 cubic feet per minute 1 6 cubic feet per hour 1 7 pounds per hour 1 8 feet per second 1 9 inches 2 0 feet 2 1 meters 2 2 parts per million 2 3 watts 2 4 kilowatts 2 5 degrees 2 6 pounds per square inch 2 7 percent 2 8 pH 2 9 Hz 3 0...

Страница 22: ...elephone list 1 16 1 6 Relay channel to activate 0 disabled 11 98 Relay state on Normal to High Alarm is 0 De energized 1 Energized 2 Disabled Relay state on High Alarm to Normal is 0 De energized 1 Energized 2 Disabled Relay state on Normal to Low Alarm is 0 De energized 1 Energized 2 Disabled Relay state on Low Alarm to Normal is 0 De energized 1 Energized 2 Disabled De energize on alarm acknowl...

Страница 23: ...Register Number the Elite drops down into the section that allows entering alarm and channel processing information n n Channel Number 11 98 0 Pulse Duration 0 86400 seconds 0 2 Channel Mode 0 Disabled 1 Status Only 3 Channel Alphanumeric ID CHAN nn 4 Relay ID message Antx inc 2001 Version 1 2 13 ...

Страница 24: ...DiaLog Elite PLC Interface Manual 14 Version 1 2 Antx inc 2001 ...

Страница 25: ...lating to the PLC setup MODBUS PLC Setup and changing any of the Register Type or Register Numbers The display shows the following when the PLC Interface is enabled and no channels are in alarm RUN MODE 09 22 01 16 12 44 View Prnt Alms F1 F2 F3 F4 Viewing Alarms If there are any MODBUS PLC alarms the following display is presented RUN MODE 09 22 01 16 12 44 Alarms Pending View Prnt Alms F1 F2 F3 F...

Страница 26: ... O channel alarm 71 Your channel name Op Al Exit Å Æ Scrl F1 F2 F3 F4 Channel in alarm Op Open current condition Al Alarm If an I O channel is in alarm the display will look like above If more than one channel is in alarm you can press the F4 key to scroll through all channels automatically or press the F2 and F3 arrow keys to move through the list Confirming Modbus Slave Communication To confirm ...

Страница 27: ...nual Enter in the channel to view The following display is shown 71 MBUS Chan 71 123 45 gals Exit Å Æ Scrl F1 F2 F3 F4 Channel number and name Current value and engineering units for a Holding register Antx inc 2001 Version 1 2 17 ...

Страница 28: ...DiaLog Elite User Manual 2000 Antx inc 18 Version 1 2 ...

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