Perle Systems 5500161-40 - Manual (Page 16)

Table of Contents
16 IOLAN SDS/SCS/STS/MDC User’s Guide, Version 4.0
Modbus TCP Application ..................................................................... 278
Modbus I/O Access ..................................................................278
Function Codes..................................................................................... 278
I/O Coil/Register Descriptions ............................................................. 279
Serial Port Coil/Register Descriptions ................................................ 280
A4/T4 Registers..................................................................................... 280
A4D2/A4R2 Registers ........................................................................... 281
D4/D2R2 Registers................................................................................ 282
Serial Pin Signals.................................................................................. 282
TruePort I/O ...............................................................................283
TruePort/Modbus Combination ........................................................... 283
API Over TruePort Only........................................................................ 284
Accessing I/O Data Via TruePort.............................................285
Introduction ........................................................................................... 285
Setup ...................................................................................................... 285
Format of API Commands.................................................................... 286
Get Commands ..................................................................................... 286
Command Format............................................................................. 286
Response Format ............................................................................. 286
Set Commands...................................................................................... 287
Command Format............................................................................. 287
Successful Response Format........................................................... 288
Unsuccessful Response Format....................................................... 288
Error Codes ........................................................................................... 289
I/O SNMP Traps.........................................................................289
Chapter 11 Configuring Clustering................................291
Introduction...............................................................................291
Clustering Slave List ................................................................291
Overview ................................................................................................ 291
Adding Clustering Slaves .................................................................... 292
Overview........................................................................................... 292
Field Descriptions ............................................................................. 292
Advanced Clustering Slave Options ................................................... 293