Protectowire CTM-530 Series User Manual

Modbus Over RS-485 Operation Guide
Descriptions ................................................................................................................................... 33
RS-485 Serial Bus .............................................................................................................. 33
Modbus Protocol ...............................................................................................................33
CTM-530 Modbus over RS-485 ........................................................................................ 33
Specifi cations .................................................................................................................................. 34
Port Specifi cations .............................................................................................................. 34
Protocol Specifi cations ....................................................................................................... 34
Wiring
Wiring Description ............................................................................................................35
Wiring Diagram ................................................................................................................. 35
Example Bus Diagram ....................................................................................................... 35
Confi guration Settings
Confi guration Settings Descriptions................................................................................... 36
Accessing the Modus Menu ............................................................................................... 36
Setting the Slave Address .................................................................................................... 37
Setting the Parity ............................................................................................................... 37
Setting the Baud Rate ........................................................................................................ 38
Modbus Communications
Modbus Protocol Info ........................................................................................................ 38
Register Overview .............................................................................................................. 38
Module Status .................................................................................................................... 39
Temperature Readings ........................................................................................................ 40
Event Distance Measurements............................................................................................ 40
Cold Junction Temperature ................................................................................................ 40
Detector Type .................................................................................................................... 41
Initialize / Reset ................................................................................................................. 41
Table of Contents

Protectowire CTM-530 Series Specifications

General

Brand	Protectowire
Model	CTM-530 Series
Category	Control Unit
Language	English