Connecting A 5 V Position Sensor To Rs 422A - Siemens SIMATIC S5 ET 200U Manual

Figure 9-11Connecting a 5 V Position Sensor to RS 422A
Figure 9-12 Connecting a 24 V DC Position Sensor
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.
Electronic Light Source
Sensor Line
5 V 5 V 0 V
V
5 V a1
Pulse
Sensor
V
a2
V
a0
Shield
Figure 9-12 shows how to connect a 24 V DC position sensor.
Electronic Light Source
0 V
24 V
24 V
Position
Sensor
V
a1
V
a2
V
a0
Shield
Function Modules
Module
5 V
1
5 V
L+
3
0 V
24 V
M
5
A–N
A
7
B
9
B–N
R
11
R–N
13
15
Shell of Sub–
miniature D Connector
Module
1
3
M
5
0 V
7
L+
9 24 V
11
A
13
B
R
15
Shell of Sub–
miniature D Connector
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