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Table of Contents
I/O Modbus Slave ..................................................................... 292
Modbus Serial Application Connected to the Serial Port................. 292
Modbus Serial Application Connected to the Network..................... 292
Modbus TCP Application..................................................................... 293
Modbus I/O Access.................................................................. 293
Function Codes .................................................................................... 293
I/O Coil/Register Descriptions............................................................. 294
Serial Port Coil/Register Descriptions................................................ 295
A4/T4 Registers .................................................................................... 295
A4D2/A4R2 Registers........................................................................... 296
D4/D2R2 Registers ............................................................................... 297
Serial Pin Signals ................................................................................. 297
TruePort I/O .............................................................................. 298
TruePort/Modbus Combination........................................................... 298
API Over TruePort Only ....................................................................... 299
Accessing I/O Data Via TruePort ............................................ 300
Introduction........................................................................................... 300
Setup...................................................................................................... 300
Format of API Commands ................................................................... 301
Get Commands..................................................................................... 301
Command Format ............................................................................ 301
Response Format............................................................................. 301
Set Commands ..................................................................................... 302
Command Format ............................................................................ 302
Successful Response Format .......................................................... 303
Unsuccessful Response Format ...................................................... 303
Error Codes........................................................................................... 304
I/O SNMP Traps ........................................................................ 304
Chapter 11 Configuring Clustering................................305
Introduction .............................................................................. 305
Clustering Slave List ............................................................... 305
Overview................................................................................................ 305