ICP DAS USA I-7530A-MR-FD User Manual page 67

Figure 5-3: In I-7530A-MR-FD, the defined address of CANFD message
input register and output register
Modbus Input Register:
(1) Normal CAN Message Field:
In this field, the address range of "Normal CAN Message" is
00000~01799 (protocol addresses). It is used to store the CAN message
received from the CAN network. One CAN message will occupy 9-byte
address space in the "Normal CAN Message" field ;Each CANFD
message occupies 37 bytes address space in the "Normal CAN
Message" field .Therefore, it can store maximum 200 CAN messages.
The detailed Modbus address arrangement of "Normal CAN Message"
field is described as the table 5-2.
I-7530A-MR-FD Modbus RTU to CAN Converter User's Manual (Version 1.0, 08/2022) ------------- 67