Siemens SIMATIC S7-1500 System Manual page 94

Wiring
5.10 Front connector for the I/O modules
7. Wire the power supply element (Figure 8).
Terminals 41/42 and 43/44 are galvanically connected to each other. If you connect the
supply voltage to 41 (L+) and 44 (M), you can then loop-through the potential to the next
module with terminals 42 (L+) and 43 (M).
Figure 5-13
Wiring front connectors for I/O modules with shield contact element
To wire a front connector, follow these steps:
1. Strip the cable shielding.
2. Begin to completely wire the front connector (Figure 1).
Figure 5-14
94
Preparing front connectors for I/O modules with shield connection element (3)
Wiring front connectors for I/O modules with shield connection element (1)
Automation system
System Manual, 09/2016, A5E03461182-AD