Download Modbus Module User Guide - Leroy

Contents
1.
2.
3.
Introduction .......................................................................................................................................................4
Important User Information ..............................................................................................................................4
Installation .........................................................................................................................................................4
3.1
3.2
Installation Procedure ............................................................................................................................................................4
Physical installation................................................................................................................................................................4
4.
Modbus Module Connection and Configuration ............................................................................................5
4.1
4.2
4.3
Adjustment .............................................................................................................................................................................5
Connection.............................................................................................................................................................................5
LEDs ......................................................................................................................................................................................6
5.
6.
Master Configuration ........................................................................................................................................6
Modbus Functions ............................................................................................................................................6
6.1
6.2
6.3
6.4
6.5
Modbus Register ....................................................................................................................................................................7
Trip Codes .............................................................................................................................................................................9
Cyclic redundancy check (CRC)........................................................................................................................................... 10
Examples ............................................................................................................................................................................. 10
Modbus Error Codes ............................................................................................................................................................ 11
7.
Modbus Control via Remote Keypad ............................................................................................................ 11
7.1
7.2
7.3
7.4
Grounding and Shielding...................................................................................................................................................... 11
Termination Resistors .......................................................................................................................................................... 11
RS-485 Data Cable Connection ........................................................................................................................................... 11
Remote Keypad RS-485 Network Connection Specifications ............................................................................................... 11
8.
Specifications.................................................................................................................................................. 12
Modbus Module User Guide
Issue D
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