Configuration and operation
6.2 Project engineering
CP 343-1 Lean
46 Equipment Manual, 01/2023, C79000−G8976−C198−09
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 25) and Replacing a module without a programming
device (Page 63). For detailed information on configuration, refer to Part A of this manual,
see References /1/ (Page 73).
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 13)) 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.
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