Siemens CP 1242-7 GPRS V2 Operating Instructions Manual page 32

Installation, connecting up, commissioning
4.2 Installing and commissioning the CP
Procedure for installation and commissioning
NOTICE
Installation location
The module must be installed so that its upper and lower ventilation slits are not covered,
allowing adequate ventilation. Above and below the device, there must be a clearance of 25
mm to allow air to circulate and prevent overheating.
Remember that the permitted temperature ranges depend on the position of the installed
device.
Device position / permitted temperature range
Horizontal installation of the rack:
0 °C to 55 °C
Vertical installation of the rack:
0 °C to 45 °C
Note
Connection with power off
Only wire up the S7-1200 with the power turned off.
Power supply from the power outputs of the CPU
The power supply of the CP must be supplied via the power outputs of the CPU.
Keep within the maximum load of the power outputs of the CPU.
You will find data relating to the current consumption and power loss of the CP in the section
Technical specifications (Page 53).
Turning off the station when plugging/pulling the CP
Do not only turn off the power supply to the CP. Always turn off the power supply for the
entire station.
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Installation location
Operating Instructions, 05/2014, C79000-G8976-C311-00
CP 1242-7 V2