Controlling The Mode; Effects Of Protection Levels - Siemens SIMATIC NET CP 443-1 Advanced Manual

6.2

Controlling the mode

You can change the mode of the CP between RUN and STOP using the STEP 7
configuration software or using STEP 7 special diagnostics.
Note the restrictions when a protection level is configured for the CPU. See section Effects of
protection levels (Page 67) for information on this.
Change from STOP to RUN:
The CP loads configured and/or downloaded data into the work memory and then changes
to RUN mode.
Change from RUN to STOP:
The CP changes to STOP (transitional phase with LED display "Stopping").
The reaction is as follows in STOP:
● Established connections (ISO transport, ISOonTCP, TCP, UDP connections) are
terminated.
● Downloading interconnections for PROFINET CBA communication is not possible.
● The following the functions are disabled:
– Time-of-day synchronization
– PROFINET CBA
– PROFINET IO
● The following functions remain enabled:
– The configuration and diagnostics of the CP (system connections for configuration,
– Web diagnostics
– FTP / FTPS access to the file system
– HTTP / HTTPS access
– Routing function
6.3

Effects of protection levels

Module access protection on the CP
If you enable the protection level "Status dependent" in the CP configuration ("Options" tab),
the following actions are only possible when either the CPU or the CP is in the STOP state:
● Changing the operating status of the CP (RUN → STOP)
● Resetting / memory reset
Note the additional restriction if a protection level of the CPU is enabled.
CP 443-1 Advanced (GX30)
Manual, 03/2019, C79000-G8976-C256-05
diagnostics, and PG channel routing are retained).
Configuration and operation
6.2 Controlling the mode
67