Modbus Commands For Ir-310-Rm - ICP DAS USA IR-310-RM User Manual

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5. Modbus Commands for IR-310-RM

The following Function Code commands are provided for a Modbus master to control
and configure IR-310-RM. It is necessary to append 2 bytes of CRC16 to the tail of
each Modbus command.
FC01, 05, and 15 are the standard Modbus commands for Modbus masters to access
the relay outputs of IR-310-RM. Sub-FC commands of FC100 are specific to the
settings and control on IR-310-RM.
Table 5-1: Modbus Function Calls for IR-310-RM
Function Code
01 (0x01)
05 (0x05)
15 (0x0F)
100 (0x64)
IR-310-RM, IR Controlled 10-ch High Power Relay Module (Ver. 1.1, Jul/02/2013) 29
Description
Read coils (relay output states)
Write single coil (single relay output)
Write multiple coils (multiple relay outputs)
Commands for the settings of the IR-310-RM.
Figure 5-1
Section
5.1
5.2
5.3
5.4