Siemens SIMATIC S5 ET 200U - Connecting a Counting Pulse Sensor for 5 V Differential Signal to RS 422

9-22
ET 200U Distributed I/O Station
EWA 4NEB 812 6087–02b
 Figure 9-9 shows how to connect counting pulse sensors for a 5 V differ-
ential signal to RS 422A.
Module
Sensor Line
A
L+
Shell of Sub–
miniature D Connector
0 V
24 V
5 V
Electronic Light Source
V
a
Shield
M
5 V
5 V5 V 0 V
A-N
5 V
Pulse
Sensor
1
3
5
7
9
11
13
15
Figure 9-9 Connecting a Counting Pulse Sensor for 5 V Differential Signal to RS 422
 Figure 9-10 shows how to connect a counting pulse sensor for 24 V DC.
1
3
5
7
9
11
13
15
Module
Shell of Sub–
miniature D Connector
Shield
DC 24 V0 V
24 V
Pulse
Sensor
M
0 V
L+
24 V DC
A
Figure 9-10Connecting a Counting Pulse Sensor for 24 V DC
Function Modules