Installation

48 - Connecting Serial Devices Hardware Installation and Configuration Guide: 2000451 Rev. J
Connecting Serial Devices
Serial Terminal (4)
Null-Modem Cables
(RS-232)
An RS-232 null-modem cable is required for
connecting DTE devices.
Serial Terminal (4)
Null-Modem Cables
(RS-422)
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.
Serial Terminal (4)
Straight-Through
Cables (RS-232/485)
RS-232 or RS-485 straight-through cables
are used to connect modems and other DCE
devices.
RTS RxDTxD CTS
CTS TxDRxD RTS
8237
5324
DB9
DB25
RS-232 Null-Modem Cable
RTS RxDTxD CTS
RxD+ TxD-RxD- TxD+
283
7
3524
DB9
DB25
RS-422 Null-Modem Cable
RTS RxDTxD CTS
RTS RxDTxD CTS
3728
2435
DB9
DB25
or
TRxD-
or
TRxD+
RS-232/422 Straight-Through Cable