Festo CECX-X-C1 Series User Manual

System manual CECX / Serial option module CECX-S-S4
CECX-II 32-8
Example 1: RS-422-A wiring connection at the CECX-S-S4
CECX-S-S4
R
3
GND
transmitter
G
R G
8
9
5
4
transmitter
A
receiver
communication participant
receiver
ground
transmit +
B
A'
B'
receive +
A'
B'
A
B
transmit -
receive -
receive +
receive -
transmit +
transmit -
t
R
2
TERM B
7
TERM A
t
R
G .... transmitter R .... receiver Rt .... terminating resistor
Example 1: RS-422-A interface
Example 2: RS-485-A wiring connection at the CECX-S-S4
CECX-S-S4
8
B/B'
A/A'
GND
B/B'
A/A'
G/R
3
5
G/R
ground
to other
participants
transmitter/
receiver
transmit/
receive -
transmit/
receive +
2
TERM B
7
TERM A
t
R
communication participant
transmitter/
receiver
transmit/
receive -
transmit/
receive +
to other
participants
G .... transmitter R .... receiver Rt .... terminating resistor (if required)
Example 2: RS-485-A interface
The following applies for both, RS-422-A as well as for RS-485-A:
The maximum number of participants is limited to 32.

Festo CECX-X-C1 Series Specifications

General

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