I-7530A-MR Modbus RTU to CAN
Converter User’s Manual (Version 1.07, 06/2016) ------------- 86
5.2.3 Using Modbus RTU command to get a Specific CAN Message
The I-7530A-MR supports a
“Specific CAN Message” field to get the expect
ten specific CAN messages(firmware v1.02 or later support 100 CAN ID of CAN
messages). When receiving a CAN message whose CAN ID is defined in the
Specific CAN Message by the Utility tool, the I-7530A-MR will save this CAN
message to the
“Specific CAN Message” field.
Users can use the Modbus RTU command (function code 04
hex
) to directly
read the CAN message from this field. It is usually used to get the important
CAN messages immediately. The start address of the command must be the
same as the start address defined in the Specific CAN Message field, and the
data length field must be a multiple of 9.
Example:
Use the Modbus RTU command (function code 04
hex
) to read the specific CAN
message from the
“Specific CAN Message” field:
Figure 5-7: Use the Modbus command to read specific CAN message.
