Siemens SINUMERIK 840C Installation Instructions Manual page 426

12.93
73
Note:
This machine data is not included in the machine data lists. The DACs are configured in the
course of the drive servo start-up procedure for diagnostic purposes.
Input of shift factor DAC2 for analog output. The top 8 bits from a 16-bit wide memory location
are output. This machine data specifies how often the value must be shifted to the left
beforehand. A shift by one position corresponds to a multiplication by 2, i.e. the shift factor
allows multiplication by the power of two 2
in this way is 32768 (only the last bit is evaluated).
74
Note:
This machine data is not included in the machine data lists. The DACs are configured in the
course of the drive servo start-up procedure for diagnostic purposes.
Input of an offset value for DAC2 which is added to the value prior to analog output.
76
Note:
This machine data is not included in the machine data lists. The DACs are configured in the
course of the drive servo start-up procedure for diagnostic purposes.
Input of memory address of which the contents must be output.
3044 H: Speed actual value n
77
Note:
This machine data is not included in the machine data lists. The DACs are configured in the
course of the drive servo start-up procedure for diagnostic purposes.
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Siemens AG 1992 All Rights Reserved
SINUMERIK 840C (IA)
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Default value Lower input limit
0
Default value Lower input limit
0000 FF80
Default value Lower input limit
3044 0000
act
Default value Lower input limit
0
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7 Drive Machine Data (SIMODRIVE Drive MD)
7.1.2 MSD MD (data description - SW 3)
Shift factor DAC2
Upper input limit
0 15
shift factor
. The maximum gain which can be obtained
Offset DAC2
Upper input limit
007F
Address DAC1
Upper input limit
FFFF
Shift factor DAC1
Upper input limit
0 15
6FC5197- AA50
Active
at once
Units
–
Active
at once
Units
Hex
Active
at once
Units
Hex
Active
at once
Units
–
7–11