Devicemaster 1E (Serial Terminals) Cables And Loopbacks; Serial Terminal (4) Null-Modem Cables (Rs-232); Serial Terminal (4) Null-Modem Cables (Rs-422) - Comtrol DeviceMaster PRO Installation And Configuration Manual

DeviceMaster 1E (Serial Terminals) Cables and Loopbacks

Serial Terminal (4)
Null-Modem Cables
(RS-232)
Serial Terminal (4)
Null-Modem Cables
(RS-422)
DeviceMaster Installation and Configuration Guide: 2000506 Rev. B
Use the appropriate discussion to build the following cables:
• Serial Terminal (4) Null-Modem Cables (RS-232) on Page 63
• Serial Terminal (4) Null-Modem Cables (RS-422) on Page 63
• Serial Terminal (4) Straight-Through Cables (RS-232/485) on Page 64
• 1E Loopback Signals on Page 64
An RS-232 null-modem cable is required for connecting DTE devices.
DB9
DB25
An RS-422 null-modem cable is required for connecting DTE devices.
Note: RS-422 pinouts are not standardized. Each peripheral manufacturer uses different
pinouts. Please refer to the documentation for the peripheral to determine the
pinouts for the signals above.
DeviceMaster 1E (Serial Terminals) Cables and Loopbacks
RS-232 Null-Modem Cable
TxD RTS RxD
RxD CTS TxD
2 8
3 5
RS-422 Null-Modem Cable
TxD RTS RxD
RxD- RxD+ TxD-
2 8 3
DB9
DB25 3 5 2
CTS
RTS
3 7
2 4
CTS
TxD+
7
7
4
Connecting Serial Devices - 63