Specifications

DeviceMaster Installation and Configuration Guide: 2000506 Rev. B Connecting Serial Devices - 63

DeviceMaster 1E (Serial Terminals) Cables and Loopbacks

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

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.

RTS RxDTxD CTS

CTS TxDRxD RTS

8237

5324

DB9

DB25

RS-232 Null-Modem Cable

RTS RxDTxD CTS

RxD+ TxD-RxD- TxD+

283

3524

DB9

DB25

RS-422 Null-Modem Cable