Project Engineering; Controlling The Mode - Siemens CP 343-1 Manual

Configuration and operation

6.2 Project engineering

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
– 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.
46
System connections for configuration, diagnostics and PG channel routing still exist.
Manual, 12/2018, C79000−G8976−C201-08
CP 343-1