14 CIMPLICITY® Display Station Touch Display: IC752CTD400/450 – March 1998 GFK-1425B
Serial Communication Cables
COM1 and COM2 Pin Assignments
1 DCD
2Rx
3Tx
4 DTR
5 Gnd
6 DSR
7 RTS
8 CTS
9RI
Serial communication cables for COM1 and COM2 should be correctly terminated.
• Typically COM1 is used for communications to the PLC and COM2 is used for Host
Communications to another device or for a serial mouse.
• To ensure that the installation meets the EMC radiation specification, the serial cables must
comply with the following requirements:
The cables must be of the shielded type.
The D-type connector covers must provide EMC shielding (e.g. metallized plastic or
die cast metal covers).
The cables must be terminated with 360 degree termination of the shield, as illustrated
below.
a45558
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6
1