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3.5
Mode of the CPU - effect on the CM
You can change the mode of the CPU between RUN and STOP using the STEP 7 configuration
software. Depending on the operating status of the CPU, the CM behaves as described below.
Changing the CPU from RUN to STOP
When the CPU is in STOP mode, the CM remains in RUN mode.
3.6
Disassembly
Improper disassembly
Improper disassembly may result in a risk of explosion in hazardous areas.
For proper disassembly, observe the following:
• Before starting work, ensure that the electricity is switched off.
• Secure remaining connections so that no damage can occur as a result of disassembly if
SIMATIC CM 1542-1
Operating Instructions, 04/2023, C79000-G8976-C355-05
WARNING
the system is accidentally started up.
Installation, connecting up, commissioning, operation
3.5 Mode of the CPU - effect on the CM
33
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