Siemens SINUMERIK 840D sl Function Manual page 880

Synchronous Spindles (S3)
14.2 Programming of synchronous spindle couplings
Define new couplings
Language instruction "COUPDEF" can be used to create new synchronous spindle couplings
(user-defined) and to modify the parameters for existing couplings.
When the coupling parameters are fully specified, the following applies:
COUPDEF (FS, LS, Ü
The spindle coupling is unambiguously defined with FS and LS
The other coupling parameters must only be programmed when they need to be changed.
The last valid status remains applicable for non-specified parameters.
The individual coupling parameters are explained below:
● FS, LS: Spindle identifiers for following and leading spindles
● Ü
● Block change behavior
NOC: Block change is enabled immediately
FINE: Block change under "Fine synchronism"
COARSE: Block change in response to "Coarse synchronism"
IPOSTOP: Block change for IPOSTOP (i.e. after setpoint-end synchronism)
The block change response is specified as a character string (i.e. with quotation marks).
The block change response can be specified simply by writing the letters in bold print. The
remaining letters can be entered to improve legibility of the parts program but they are not
otherwise significant.
If no block change response is specified, then the currently selected response continues to
apply.
With the programmable synchronism test markers WAITC, the replacement with new blocks
is delayed until the parameterized synchronism is reached.
● Coupling type
DV (Desired Values): Setpoint coupling between FS and LS
AV (Actual Values): Act.-val. coupl. between FS and LS
VV (Velocity Values): Speed coupling between FS and LS
If no coupling type is specified, then the currently selected type continues to apply.
880
numerator
e.g.: S1, SPI(1), S2, SPI(2)
The valid spindle number must be assigned in the axis-specific MD35000
$MA_SPIND_ASSIGN_TO_MACHAX of a machine axis.
, Ü : Speed ratio parameters for numerator and denominator
numerator denominator
The speed ratio is specified in the form of numeric values for numerator and denominator,
see Section "Synchronous operation".
The numerator must always be programmed. If no denominator is specified, then its
value is always assumed to be "1,0".
This parameter allows you to select when the block change should take place when
synchronous operation is selected:
, Ü , block change response, coupling type)
denominator
Function Manual, 01/2008, 6FC5397-1BP10-3BA0
Extended Functions