Siemens SIMATIC NET S7-400 Equipment Manual page 28

LEDs and mode selector
INTF LED EXTF LED
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Controlling the mode
There are different ways in which you can control the mode of the CP 443-5 Extended, as
follows:
• Mode selector
• STEP 7 special diagnostics configuration software
To control the CP mode from STEP 7, the mode selector must be set to RUN.
Mode selector
With the mode selector, you can set the following modes:
• 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 with the following response:
– Established connections (FDL connections, configured, and unconfigured S7
– DP slaves are taken out of data transfer
– Data record routing is deactivated
– In STOP mode, configuring and performing diagnostics on the CP remain possible
– In STOP mode, the time of day continues to be forwarded
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BUSF LED RUN LED
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connections) are terminated
STOP LED CP operating mode
Firmware update completed.
(As of firmware version V7.1.7)
• Download in RUN active / CiR
• RUN with internal error (for example, bad
configuration data)
- PROFIBUS bus error
RUN; however problems on DP line (DP slave not
in data transfer or not accessible)
RUN; however problems on DP line (faulty
module in DP slave)
Module fault / system error
Note:
For service purposes, you can read out the cause
of the operating status from the diagnostics
buffer of the CP. To do this, the CP needs to be
changed from STOP to RUN using the mode
selector.
Equipment Manual, 01/2023, C79000-G8976-C162-10
CP 443-5 Extended