Siemens SIMATIC MV540 H - Wiring Examples

Connection
6.4 Wiring examples
SIMATIC MV500
Operating Instructions, 06/2018, C79000-G8976-C494-01
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6.4
Wiring examples
I/O interface
Wire the "Output Common" signal with + 24 V DC and the "Input Common" signal with 0 V.
Figure 6-6 I/O interface as P type
Wire the "Output Common" signal with 0 V and the "Input Common" signal with + 24 V DC.
Figure 6-7 I/O interface as N type
Connecting up the Power IO RS232 interface
Figure 6-8 Connecting up the power IO RS-232 interface as P type