Siemens Sinumerik 840D Series Function Manual page 144

4 Firmware Drive Functions
4.10 Position measuring system
Actual position
value
5040 PISTON_ZERO
Piston zero in relation to machine zero
Default:
Unit:
0.0
mm
4-144
The length defines the total transferred message frame length including all par-
ity or alarm bits.
Example: 24 bits + 1 alarm bit; 25 must be entered.
Every encoder manufacturer has a different name for the alarm bit, e.g. Power
Failure Bit.
Minimum: Maximum:
-1000000.0 100000.0
In the machine data 5040: between the piston zero (end stop at A end) and ma-
chine zero must be set in MD 5040: PISTON_ZERO.
If the actual position is available in machine coordinates in the drive after the
reference point approach, it can be applied to calculate the piston position (e.g.
for adaptation).
SINUMERIK 840D/SIMODRIVE 611 digital, HLA Module (FBHLA) - 10.03 Edition
Cross reference: -
Related to:
Protection level:
HLA
3/3
Data type: Active:
FLOAT Immediately
 Siemens AG, 2003. All rights reserved
10.03