Siemens SINUMERIK 840DiE sl Manual page 408

11 NCK Commissioning with HMI Advanced
11.11NCK/PLC diagnostics
11-408
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PLC STOP
With the "PLC STOP" button, the PLC is put in the STOP state. Processing
of the PLC user program has stopped and all outputs are set to substitute
values.
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PLC Delete Program
The PLC is put in the STOP state with "PLC Delete Program" button and
then PLC general reset (default data) is performed. The following actions are
performed by the PLC:
1. The PLC disconnects all links.
2. The user data are deleted (data and program blocks)
3. The system data blocks (SDB) are deleted.
4. Battery–backed data are copied back into the RAM area from the PLC
after general reset.
5. The diagnostics buffer, the MPI parameters, the clock time, and the oper-
ating hours counter are not reset.
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PLC default data
The PLC is put in the STOP state via the "PLC Default Data" button and
then an extended PLC general reset is performed. The actions stated above
under item 1. – 4. and those under item 5. are reset.
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Status displays
The status displays, which are made to look like LEDs, indicate the following:
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SF (System Fault)
lights up on PLC system errors, such as: Hardware, programming, para-
meterizating, computing, time, battery, and communication errors.
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BATL (Battery Low)
lights up if the 5 V power supply (back–up battery) falls below its permis-
sible value.
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BATF (Battery Fault)
lights up on failure of the 5 V power supply (back–up battery).
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FORCE
lights up if the FORCE function is active.
The FORCE function sets user variables to permanent values that can-
not be overwritten by the user program. For detailed information on this,
see the Online Help of the SIMATIC Manager STEP 7.
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RUN: See Table 11-58 below.
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STOP: See Table 11-58 below.
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BUS 1
lights up in case of a bus/interface error on PROFIBUS (1) (interface
X101)
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BUS 2
lights up in case of a bus/interface error on MPI or PROFIBUS (2) (de-
pends on configuration of interface X102)
© Siemens AG 2007 All Rights Reserved
SINUMERIK 840Di sl Manual (HBIsl) – 01/2007 Edition
01/2007