Siemens SIMATIC S5 ET 200U - Connecting a 5 V Position Sensor to RS 422 A

9-23
ET 200U Distributed I/O Station
EWA 4NEB 812 6087–02b
 Figure 9-11 shows how to connect a 5 V DC position sensor to RS 422A.
Module
Sensor Line
L+
Shell of Sub–
miniature D Connector
24 V
5 V
Electronic Light Source
V
a1
Shield
M
5 V
5 V5 V 0 V
5 V
Pulse
Sensor
1
3
5
7
9
11
13
15
B
B–N
R
R–N
A
A–N
V
a2
V
a0
0 V
Figure 9-11Connecting a 5 V Position Sensor to RS 422A
 Figure 9-12 shows how to connect a 24 V DC position sensor.
V
a1
1
3
5
7
9
11
13
15
Module
Shell of Sub–
miniature D Connector
Shield
0 V
24 V
Position
Sensor
M
0 V
L+
A
Electronic Light Source
24 V
V
a2
V
a0
24 V
B
R
Figure 9-12 Connecting a 24 V DC Position Sensor
Function Modules