Set The "Modbus Slave" Parameter - ICP DAS USA I-7530A-MR-FD User Manual

Set the "Modbus Slave" parameter

3.2.6
When users select the "Modbus Slave" communication mode, the
functions, "Device ID" and "Specific CAN ID", are useful. In the "Specific
CAN ID" field, users can set maximum 100 CAN IDs which indicate the
corresponding CAN messages to be stored in the specific Modbus Input
Register respectively. In the Modbus Input Register, the register range of
the "Specific CAN ID" occupies the section from 0x0800 to 0x0859 and e
ach CAN ID will use 9 Modbus input registers for normal CAN. "Specific
CAN ID" occupies the section from 0x1BD0 to 0x2BFF and each CAN ID
will use 37 Modbus input registers for CAN FD.
In Modbus Slave mode, users need to communicate with the I-7530A-
MR-FD via using Modbus RTU command.The I-7530A-MR-FD only
supports function code 03/04/06/10 of Modbus RTU commands for
reading and writing CAN messages. For more details about Modbus
Slave mode, please refer to the section 5.
Figure 3-14: The configuration for Modbus Slave mode.
I-7530A-MR-FD Modbus RTU to CAN Converter User's Manual (Version 1.0, 08/2022) ------------- 31