Siemens Simatic S7-1500 - Properties of the Digital On-Board I;O

Hardware section
2.3 Wiring
S7-1500
Getting Started, 05/2014, A5E03981761-AC
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2.3.8
Wiring front connectors
Procedure
1. Connect the individual wires according to the connection diagram on the inner side of the
front cover in the terminal and screw tight.
2. For strain relief, run the cable tie around the cable harness and pull tight.