Installation, connecting up, commissioning
4.2 Installing and commissioning the CP
CP 1242-7 V2
Operating Instructions, 05/2014, C79000-G8976-C311-00
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Overvoltage protection
NOTICE
Protection of the external power supply
If power is supplied to the module or station over longer power cables or networks, the
coupling in of strong electromagnetic pulses onto the power supply cables is possible. This
can be caused, for example by lightning strikes or switching of higher loads.
The connector of the external power supply is not protected from strong electromagnetic
pulses. To protect it, an external overvoltage protection module is necessary. The
manufacturers of industrial overvoltage protection devices produce suitable modules.
4.2
Installing and commissioning the CP
Prior to installation and commissioning
WARNING
Read the system manual "S7-1200 Programmable Controller"
Prior to installation, connecting up and commissioning, read the relevant sections in the
system manual "S7-1200 Programmable Controller", refer to the documentation in the
Appendix.
When installing and connecting up, keep to the procedures described in the system manual
"S7-1200 Programmable Controller".
Configuration
One requirement for the commissioning of the CP is the completeness of the STEP 7 project
data (see below). You should also read the section "Configuration and programming
(Page 45)".
Inserting the SIM card
Note
Inserting and removing the SIM card
Do not insert or remove the SIM card while the CP is operating.
Prior to installation, insert the SIM card in the CP.