Festo CECX-X-C1 Series User Manual

System manual CECX / Serial interface module CECX-S-2S1
CECX-II 28-5
28.5 Connections and wiring
28.5.1 General information on wiring and shielding
This section covers issues that concern in particular the serial interface
connections.
For all serial interfaces holds true:
z Use shielded cables
z Contact shield directly at metallic interface plug casing.
Required cable
(must be shielded in all
cases)
Take account of
line termination
Current loop Twisted paired wiring No
RS 232 C
Twisted pair wiring with signal
ground (SGND)
No
RS-422-A
unidirectional
Twisted pair wiring with signal
ground (SGND)
Yes
RS-422-A
bidirectional
2* twisted pair wiring with 1
signal ground (SGND)
Yes
RS-485-A
Twisted pair wiring with signal
ground (SGND)
Yes
verdrillte 2-Drahtleitung
Signalmasse
Schirm mit Schirmmass
e
Twisted 2-pair line
Signal ground
Shield with shield ground
Structure of a shielded twisted pair wiring with signal ground (SGND)
28.5.2 Interface of theCECX-S-2S1 (RS-232-C)
28.5.2.1 Pin assignment
The module is connected to the bus with a 9-pole DSUP male connector.

Festo CECX-X-C1 Series Specifications

General

Brand	Festo
Model	CECX-X-C1 Series
Category	Controller
Language	English