11
03/2006
11.12Line checksums and MD numbers in MD files
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© Siemens AG 2006 All Rights Reserved
SINUMERIK 840D/810D Start-Up Guide (IADC) – 03/2006 Edition
“Manufacturer” rights are needed to read in the following data:
S machine data without line checksum
S modified machine data values with deleted line checksum
When loading machine data files, you can choose how the system must react to
errors in the machine data file. See Abort procedure subsection 11.12.3.
If the file contains errored values, then the current values are never overwritten.
11.12.2 Machine data numbers
S Machine data numbers formally precede a machine data assignment line as
block numbers (e.g. N20070).
S There is a blank between the machine data number and machine data
assignment.
S The machine data number relates to the machine data record as a whole.
Any existing field values are not reflected in the machine data number.
S The generation of machine numbers in front of machine assignment lines in
INI and TEA files can be activated or deactivated.
– MD 11230 MD_FILE_STYLE Bit 1 = 1 Generate machine data number
– MD 11230 MD_FILE_STYLE Bit 1 = 0 Do not generate machine data
number
When machine data files are restored, the control evaluates the machine
numbers as follows:
S If errors are identified in the machine files as they are read in, then the
machine number is displayed as a block number with the corresponding
alarm.
11.12.3 Response to canceling while reading in machine data
When machine data files (INI files)
S which contain errors
S which do not match the checksum
are read into the control, alarms are generated. The import operation may be
aborted. The following responses by the control can be selected by setting ma-
chine data MD 11220 INI_FILE_MODE:
Archive files
Evaluating
MD numbers
Response to
canceling
11 Data Back-U
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