Pair-Connection Mode Description - ICP DAS USA I-7530A-MR-G User Manual

5.

Pair-connection Mode Description

The pair connection function usually needs two I-7530A-MRs. When these
two I-7530A-MRs are in pair connection mode, all RS-232/485/422 commands
transmitted from one of these two I-7530A-MRs will be put in the data field of
CAN message. This CAN message will be transferred to RS-232/485/422
commands by another I-7530A-MR. The following section will show each
condition for different pair connection configuration.
Application 1:
This application may be used in two general RS-232 devices which need to
connect with each other, but the distance between is too long to communicate
by using RS-232.
Configurations:
To apply this application, users need to configure the I-7530A-MR#1 and I-
7530A-MR#2 as follows. The RS-232 configurations of the I-7530A-MR#1 and
I-7530A-MR#2 are decided by the Device1 and Device2 RS-232 parameters.
I-7530A-MR#1 Configuration
Communication Descriptions:
If there are 7 bytes data, "1234567", transmitted from Device1, the Device2
will also receive "1234567" from the COM port of I-7530A-MR#2.
I-7530A-MR Modbus RTU to CAN Converter User's Manual (Version 1.08, 07/2019) ------------- 56
Figure 5-1: The diagram of Application 1.
I-7530A-MR#2 configuration