ICP DAS USA I-7530A-MR-G User Manual page 60

Communication Descriptions:
When the Device1 want to transmit the RS-232 command "1234567" to
Device2, the command written to I-7530A-MR#1 by the Device1 needs to be
"0021234567" because the Device1 is set to dynamic Tx CAN ID (Fixed Tx
CAN ID is not checked). The first three bytes of "0021234567" is "002", it means
that the CAN ID is 0x002 while the I-7530A-MR#1 receives the RS-232
commands from the Device1 and transfers it to CAN message. Afterwards, this
CAN message is only accepted by Device2 because the configurations of
acceptance code and acceptance mask of Device2. Similarly, if Device1 wants
to send the RS-232 command "1234567" to Device3, it needs to send
"0031234567" to the COM port of the I-7530A-MR#1. When the Device2 or
Device3 respond the RS-232 commands "456789", the CAN message will have
CAN ID "0x002" and "0x003" because of the configurations of the "Fixed Tx
CAN ID" of the I-7530A-MR#2 and I-7530A-MR#3. Due to the response CAN
ID of the I-7530A-MR#1 I-7530A-MR#2, the Device1 will receive the RS-232
I-7530A-MR Modbus RTU to CAN Converter User's Manual (Version 1.08, 07/2019) ------------- 60
Figure 5-5: I-7530A-MR#2 Configuration.
Figure 5-6: I-7530A-MR#3 Configuration.