Generic Coupling (Cp - Siemens SINUMERIK 840D sl Programming Manual

System variables
● Current coupling status of following spindle
Bit
Note


● Current angular offset
References
Detailed information on the system variables can be found in:
List Manual, System Variables
11.6

Generic coupling (CP...)

Function
"Generic Coupling" is a general coupling function, combining all coupling characteristics of
existing coupling types (coupled motion, master value coupling, electronic gearbox and
synchronous spindle).
The function allows flexible programming:
● Users can select the coupling properties required for their applications (building block
● Each coupling property can be programmed individually.
● The coupling properties of a defined coupling (e.g. coupling factor) can be changed.
Job Planning
Programming Manual, 03/2013, 6FC5398-2BP40-3BA1
The current coupling status of a following spindle can be read bit-coded via:
<value> = $AA_COUP_ACT[<FS>]
<value> Meaning
- 0 No coupling active
2 4 Synchronous spindle coupling active
All other values refer to axis mode
If the spindle is a following spindle or several couplings, then the value of the coupling state of all
couplings is returned as a total state.
The current angular offset of the following spindle to the leading spindle can be read via:
–
$AA_COUP_OFFS[<FS>]
–
$VA_COUP_OFFS[<FS>]
Application example
Correction of the angular offset difference in the NC program after cancelling the follow-
up mode:
Angular offset difference = programmed angular offset - system variable
principle).
(angular offset on the setpoint side)
(angular offset on the actual value side)
Axis couplings
11.6 Generic coupling (CP...)
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