Screw Terminal (8) Null-Modem Cables (Rs-232); Screw Terminal (8) Null-Modem Cables (Rs-422) - Comtrol DeviceMaster DM-2000 Series Installation And Configuration Manual

Connecting Serial Devices

Screw Terminal (8) Null-Modem Cables (RS-232)

An RS-232 null-modem cable is required for connecting DTE devices.

Screw Terminal (8) Null-Modem Cables (RS-422)

An RS-422 null-modem cable is required for connecting DTE devices.
98 - Connecting Serial Devices
RS-232 Null-Modem Cable
CD DSR RI
DCD DTR RI
1 4 9
DB9
8 20 22
DB25
RS-422 Null-Modem Cable
CD DSR RI DTR
DB9
DB25
DTR TxD RTS RxD CTS
DSR RxD CTS TxD RTS
6 2 8 3
6 3 5 2
TxD RTS RxD CTS
RxD- RxD+ TxD- TxD+
2 8 3 7
3 5 2 4
DeviceMaster Installation and Configuration Guide: 2000594 Rev. F
7
4