Programmable Servo Parameter Set (Scpara) - Siemens SINUMERIK 840D sl Programming Manual

5.12

Programmable servo parameter set (SCPARA)

5.12
Function
Using SCPARA, it is possible to program the parameter block (consisting of MDs) in the
parts program and in synchronized actions (previously only via PLC).
DB3n DBB9 bit3
To ensure no conflicts occur between PLC and NC, an additional bit is defined on the
PLC–>NCK interface:
DB3n DBB9 bit3 "Parameter set selection by SCPARA disabled".
If parameter set selection via SCPARA is disabled, there is no error message if the latter is
programmed nevertheless.
Programming
SCPARA[Axis]= value
Parameters
SCPARA
Axis
Value
Note
The current parameter set can be scanned by system variable $AA_SCPAR[axis].
For G33, G331 and G332, the most suitable parameter block is selected by the control.
If the servo parameter set has to be changed in both a parts program or a synchronized
action and on the PLC, the PLC user program must be extended.
References:
/FB1/ Function Manual Basic Functions; Feedrates (V1), "Feedrate Impact" section.
Example
...
N110 SCPARA[X]= 3
...
Job planning
Programming Manual, 03/2006 Edition, 6FC5398-2BP10-1BA0
5.12 Programmable servo parameter set (SCPARA)
Define parameter block
Channel axis name (X, Y, ...)
Desired parameter block (1<= value <=6)
;The 3rd parameter block is selected for axis X.
Special Motion Commands
5-41