Siemens SINUMERIK 840C Installation Instructions Manual page 426

12.93
73
Default value
0
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
Default value
0000
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
Default value
3044
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
Default value
0
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.
©
Siemens AG 1992 All Rights Reserved
SINUMERIK 840C (IA)
Shift factor DAC2
Lower input limit Upper input limit
0
shift factor
. The maximum gain which can be obtained
Offset DAC2
Lower input limit Upper input limit
FF80
Address DAC1
Lower input limit Upper input limit
0000
act
Shift factor DAC1
Lower input limit Upper input limit
0
6FC5197- AA50
7 Drive Machine Data (SIMODRIVE Drive MD)
7.1.2 MSD MD (data description - SW 3)
Units
15 –
Units
007F Hex
Units
FFFF Hex
Units
15 –
Active
at once
Active
at once
Active
at once
Active
at once
7–11