Rockwell-automation 1746-BAS-T SLC 500 Basic Module/ Instructions Manual de usuario descargar pdf (Pagina 15)

SLC 500 BASIC and BASIC-T Modules 15

Publication 1746-IN009B-EN-P - August 2005

DCE - Data Communication Equipment

Devices such as modems are Data Communication Equipment (DCE). The pinouts

on these terminals are defined for ease of interfacing with DTE equipment.

DCE 9

pinout

Signal Description Signal from DCE

Perspective

DCE 25

pinout

Pin # Pin #

1 CD-Carrier Detect Output 8

2 RXD-Received Data Output 3

3 TXD-Transmitted Data Input 2

4 DTR-Data Terminal Ready Input 20

5 COM-Signal Common Shared 7

6 DSR-Data Set Ready Output 6

7 RTS-Request to Send Input 4

8 CTS-Clear to Send Output 5

9 RI-Ring Indicator Output 22

IMPORTANT

All signal directions listed in the previous two tables are valid. For

example, TXD, Transmitted Data, is a DTE output but is also a

DCE input. The signal description is the same for DTE and DCE

but the direction of the signal (perspective) has changed based on

whether you have a DTE or DCE device.

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Rockwell-automation 1746-BAS-T SLC 500 Basic Module/ Instructions Manual de usuario Pagina 15