22
II.
Use Modbus RTU/ASCII with control modules to read analog input registers
Once a counter module is set up with a control module, it will automatically assign
counter modules’ input records registers at 0x1000 (CH0 high-order word), 0x1001
(CH0 low-order word), 0x1002 (CH1 high-order word), 0x1003 (CH1 low-order
word), 0x1004 (CH2 high-order word), 0x1005 (CH2 low-order word), 0x1006
(CH3 high-order word) and 0x1007 (CH3 low-order word). If there are multiple
registers, they will be assigned addresses based on the module station number.
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When using control modules, RS485 can connect to control modules with 0170-
0101.
The configuration that uses Modbus RTU/ASCII to read analog input module
registers is listed below:
Name/Product No.
Description
GFMS-RM01S
Master Modbus RTU, 1 Port
GFDI-RM02N
4-channel counter module (24VDC)
0170-0101
RS485(2W)-to-RS485(RJ45 interface)
Counter Module
Register Addresses
Input
Input
