Siemens SIMATIC S5-90U, System Manual

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Installation Guidelines S5-90U/S5-95U
3.3.4 Connecting the Onboard I/Os of the S5-90U
The signal cables for the onboard I/Os can be connected directly to the standard terminal on the
PLC.
Connecting Digital Inputs
The digital inputs, located on the top of the PLC, are numbered with fixed bit addresses ranging from
32.0 to 33.1. The inputs are designed for 24 V DC. The PLC has a short-circuit-proof, isolated
24 V DC/100 mA voltage source that supplies the I/Os. The ground connections for the inputs are
internally connected to the negative pole of the voltage source.
Example: Switch S1 is to be connected to input I 32.5
Figure 3-19. Example of How Digital Inputs Can Be Connected
a a a a a a a a a
a a a a a a a a a
a a a a a a a a a
a a a a a a a a a
a a a a a a a a a
INPUT
10x24VDC
a a a a a
a a a a a
a a a a a
32.0
a a a a
a a a a
a a a a
.1
a a a
a a a
a a a
.2
a a a
a a a
a a a
.3
a a a
a a a
a a a
.4
a a a
a a a
a a a
.5
a a a a
a a a a
a a a a
.6
a a a a
a a a a
a a a a
.7
a a a
a a a
a a a
.1
a a a a a
a a a a a
a a a a a
33.0
a a a
a a a
a a a
N
a a a a a
a a a a a
a a a a a
a a a a a
a a a a a
230
V
a a a a a
a a a a a
a a a a a
a a a a a
a a a a a
115
V
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a a a a a a a a a
a a a a a a a a a
Power AC
a a a a
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a a a a
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a a a a
+
24V
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a a a a
a a a a
a a a a
-
DC
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a a a a a a a a
a a a a a a a a
a a a a a a a a
OUTPUT
a a a a a a a
a a a a a a a
a a a a a a a
100mA
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a a a a a
S1
Connecting Digital Outputs
The digital outputs are located on the lower front of the PLC. Their fixed bit addresses are numbered
from 32.0 to 32.5.
Note
The sensor voltage for the S5-90U or the IM 90 is available when the first process image
is read in.
Example: A signal lamp is connected to output Q 32.0.
Figure 3-20. Example of How Digital Outputs Can Be Connected
a a a
a a a
a a a
a a a
a a a
1
a a a
a a a
a a a
a a a
a a a
2
a a a
a a a
a a a
a a a
a a a
3
a a a
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a a a
a a a
4
a a a
a a a
a a a
a a a
a a a
5
a a a
a a a
a a a
a a a
a a a
6
a a a a a a
a a a a a a
a a a a a a
a a a a a a
a a a a a a
32.0
a a a a a a
a a a a a a
a a a a a a
a a a a a a
a a a a a a
32.1
a a a a a a
a a a a a a
a a a a a a
a a a a a a
a a a a a a
32.2
a a
a a
a a
a a
a a
a a
3-20
EWA 4NEB 812 6115-02b