Siemens SIMATIC PCS 7 Configuration page 36

2 Configuring and wiring
2.3 Redundant connections of the distributed I/O
Example of an SM 332; AO 8 x 12 bit
The actuator is connected to channel 0 of each of the two redundant SM 332;
AO 8 x 12 bit.
Figure 2–20
Note
Suitable diodes include, for example, types from the series 1N4003 ... 1N4007 or
any other diode with U_r> = 200 V and I_F> = 1 A.
It makes sense to separate module weight and load weight. There must be
equipotential bonding between both.
Configuration of Redundant I/O Modules
Entry-ID: 28430682, V2.0, 03/2015
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