Creating A Commissioning Archive - Siemens SINUMERIK 840D sl Commissioning Manual

Saving and managing data
11.1 Saving data
Operating sequence for instantaneous image
If you cannot create an original image, you can save an instantaneous image as an alternative.
1. Set the PLC to the STOP operating state.
2. Archive the PLC data.
3. Set the PLC to the RUN operating state.
Operating sequence for inconsistent image
An inconsistent image results if a commissioning file with PLC data is created and the PLC is
in the RUN state (cyclic operation). The data blocks of the PLC are saved at different times with
contents that have changed in the meanwhile. This may result in a data inconsistency that,
once the data backup has been copied back to the PLC, may under certain circumstances
result in a PLC stop in the PLC program.
NOTICE
Ensure data consistency
The creation of a commissioning file with PLC data while the PLC is in RUN state (cyclic
operation) may result in an inconsistent PLC image in the commissioning archive. After this
commissioning archive has been copied back, the data inconsistency in the PLC program may
under certain circumstances result in a PLC stop.
11.1.2

Creating a commissioning archive

Requirement
The following access levels are required:
● In order to create a commissioning archive, at least access level 4 (key-operated switch 3)
is required.
● In order to import a commissioning archive, at least access level 2 (service) is required.
It is not permissible that the default setting in MD11230 $MN_MD_FILE_STYLE is changed in
order to guarantee that a commissioning file with access level 2 (service) can be read in:
Generate line checksum and MD numbers.
To prevent a topology error, Control Unit parameter p9906 (topology comparison level of all
components) should be set to "Medium" in order to import a commissioning archive.
Creating a commissioning archive
Series commissioning means bringing a series of control systems to the same initial state as
regards their data. A commissioning archive contains NC, PLC, drive and HMI data.
Compensation data of the NC can also be optionally saved. For a data backup, the drive data
is saved as binary data that cannot be read.
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CNC Commissioning: NC, PLC, Drive
Commissioning Manual, 12/2019, A5E48312804B AA