2. Setup
COM-1(PM), COM-1D(PM)
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For COM-1D(PM), obtain an RS-422A/485 crossed cable. Performing the test with a crossed cable
requires that the PC has another RS-422A/485 port. If you do not have a crossed cable, you can perform
the test on a single COM port by using the switch settings in the connector cable (CB-1D(PM)) to set
communications to loopback. The figure below shows the switch settings.
Switch settings when using the COM-1D(PM) with a crossed cable
O
N
1
2
3
4
5
6
7
8
Switch settings when using the COM-1D(PM) in loopback mode instead of using a crossed cable
O
N
1
2
3
4
5
6
7
8
