Siemens Simatic S7-1500/ET 200MP System Manual page 225

Commissioning
11.2 Check before powering on for the first time
Module installation and wiring
● Are all the modules inserted / installed in accordance with the mounting plan and
corresponding to the configuration with STEP 7 and screwed firmly to the mounting rail?
● Are all the front connectors wired according to the circuit diagram, in the final position,
and inserted on the correct module?
● Are the correct modules installed and connected to each other with U connectors?
● Are U connectors projecting either at the left-hand or right-hand over the outer modules
on the S7-1500 automation system/ET 200MP distributed I/O system?
System power supply or load current supply
● Are all system power supplies and load current supplies switched off?
● Is the power cable connector correctly wired?
● Has the connection to line voltage been made?
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Automation system
System Manual, 12/2017, A5E03461182-AE