Comtrol DeviceMaster PRO - Screw Terminal (9) Null-Modem RS-422 Cables; Screw Terminal (9) RS-232;485 Straight-Through Cables

DeviceMaster Installation and Configuration Guide: 2000594 Rev. F Connecting Serial Devices - 101
Connecting Serial Devices
Screw Terminal (9) Null-Modem RS-422 Cables
An RS-422 null-modem cable is required for connecting DTE devices.
Note: RS-422 pin outs are not standardized. Each peripheral manufacturer uses different pin outs. Please
refer to the documentation for the peripheral to determine the pin outs for the signals above.
Screw Terminal (9) RS-232/485 Straight-Through Cables
RS-232 or RS-485 straight-through cables are used to connect modems and other DCE devices.
CD DSR RI DTR RTSTxD RxD CTS
RxD+RxD- TxD- TxD+
8237
5324
DB9
DB25
RS-422 Null-Modem Cable
Sig Gnd
Gnd
5
7
RS-232/485 Straight-Through Cable
CD DSR RI DTR RTSTxD RxD CTS
DCD DSR RI DTR RTSTxD RxD CTS
169 72 8
62220 4235
DB9
DB25
3
4
8
or
TRxD-
or
TRxD+
Sig Gnd
Gnd
5
7