Siemens SINUMERIK 840C Installation Instructions Manual page 488

09.95
Note:
This machine data is calculated only once during ramp-up; its value cannot therefore be
changed during operation.
1720
This machine data is used to display detected CRC errors (cyclical redundancy check). The
counter information is output with every read request and is 5 bits in width (bit 4...bit 0 or
counter reading 0...31).
Note:
It cannot be guaranteed in all cases that the CRC error is assigned to the appropriate drive.
When the address is faulty, the "wrong" module indicates the error.
1797
Output of current data version (machine data list).
1798
Output of coded software version in decimal format. The date is coded as such: DDMMY,
where DD stands for day, MM for month and Y for the last number in the year.
Example: 01.06.1993 ˆ = 01063
1799
Output of current software version (configuration management).
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SINUMERIK 840C (IA)
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Default value Lower output limit
0000
Default value Lower output limit
0
Default value Lower output limit
0
dec
Default value Lower output limit
0
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7 Drive Machine Data (SIMODRIVE Drive MD)
CRC diagnosis parameter
Upper output limit
0 FFFF
Data version
Upper output limit
0 32 767
Firmware date
Upper output limit
0 32 767
Firmware version
Upper output limit
0 32 767
6FC5197- AA50
7.2.2 FDD MD (data description - SW 3)
Active
at once
Units
Hex
Active
at once
Units
–
Active
at once
Units
–
Active
at once
Units
–
7–73