Omron SYSMAC C200HW-ZW3AT2-E-V2 Operation Manual page 173

Using Modems
Connecting the Modem to the Host Link Unit
Prepare a cable for wiring the connectors as shown below.
Connecting the Cables
Use the prepared cables to connect the computer to the modem and the modem to the PC.
Modem
Pin No.
Abbreviation
Connector
hood
RS-232C
interface
D-Sub 25-pin plug (male)
Host Link Unit
Abbreviation
Pin No.
Connector
hood
Shield
D-Sub 9-pin plug (male)
Appendix B
RS-232C
interface
159