Siemens CP 343-1 - Project Engineering Configuration; Controlling Operating Mode

Configuration and operation
6.2 Project engineering
CP 343-1
46 Manual, 12/2018, C79000−G8976−C201-08
6.2
Project engineering
Project engineering
To set up the CP for communication services, read the information on configuring in the
sections Project engineering (Page 28) and Replacing a module without a programming
device (Page 62). For detailed information on configuration, refer to Part A of this manual,
see References /1/ (Page 71).
6.3
Controlling the mode
You have the option of changing the mode of the CP between RUN and STOP using the
STEP 7 configuration software (PLC > Accessible Nodes).
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 (RUN → STOP").
● Established connections of the open communications services (see also section
Communication services (Page 12)) are terminated.
● The following functions are disabled:
– PROFINET IO
– Time-of-day synchronization
● The following functions remain enabled:
– Downloading the configuration data and diagnostics of the CP
System connections for configuration, diagnostics and PG channel routing still exist.
– Web diagnostics (HTTP access)
– Routing function
Module access protection
The configurable module access protection has the following effects on the functions
described here:
● Module access protection: Not locked
The functions cannot be executed.
● Module access protection: Status-dependent
With this setting, it is only possible to access the CP when the CPU is in STOP mode.