Siemens SIMATIC S7-1500 Automation System System Manual page 71

7. Wire the power supply element (Figure 8).
S7-1500 Automation System
System Manual, 01/2013, A5E03461182-01
Terminals 41/42 and 43/44 are galvanically connected to each other. If you connect the
supply voltage to 41 (L+) and 44 (M), then with terminals 42 (L+) and 43 (M) you can loop
the potential to the next module.
Figure 6-11 Preparing front connectors for I/O modules with shield contact element (3)
6.8 Front connector for the I/O modules
Wiring
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