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Connecting serial devices, Db9 connectors – Comtrol UP DeviceMaster Installation User Manual

Page 41

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Hardware Installation and Configuration Guide: 2000451 Rev. J

Connecting Serial Devices - 41

Connecting Serial Devices

This section discusses connecting your serial devices to the DeviceMaster UP. It
also provides you with information to build serial cables and loopback connectors
to test the serial ports.

DB9 Connectors

RJ45 Connectors

on Page 44

Serial Terminals (4) - 1E

on Page 47

Serial Terminals (8) - 2E

on Page 49

Note: Go to

Building the Serial Ribbon Cable

on Page 16 for connector

information for the DeviceMaster UP 1-Port Embedded adapter.

Make sure that you have configured the ports using the NS-Link driver
or SocketServer for the correct communications mode before
connecting any devices. The default mode is RS-232. There is a remote
possibility that connecting a serial device for the wrong mode could
damage the serial device.

Note:

If you have a DeviceMaster UP with 16-ports, use the DeviceMaster UP 16-
Port Hardware User Guide
because the RJ45 connectors are different.

Note:

DB9 Connectors

This subsection provides the following information:

Connector pin assignments (below)

DB9 Null-Modem Cables (RS-232)

on Page 42

DB9 Null-Modem Cables (RS-422)

on Page 42

DB9 Straight-Through Cables (RS-232/485)

on Page 42

DB9 Loopback Plugs

on Page 43

Connecting DB9 Serial Devices

on Page 43

Caution

DB9 Connector Pinouts

Pin RS-232

RS-422

RS-485 Full-Duplex (Master/Slave)†

RS-485

Half-Duplex

1

DCD

Not used

Not used

2

RxD

RxD-

Not used

3

TxD

TxD-

TRxD-

4

DTR

Not used

Not used

5

GND

GND

GND

6

DSR

Not used

Not used

7

RTS

TxD+

TRxD+

8

CTS

RxD+

Not used

9

RI

Not used

Not Used

Only 2-port models support RS-485 full-duplex.