Yaskawa MotionWorks IEC User Manual

Page 289

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PLCopenPlus Function Blocks for Motion Control 2013-04-13

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• 0.0 Offset will cause no offset of the cam data, however the initial slave

offset (discrepancy between slave commanded position and first data
used from the table) when Y_Start_Mode.SlaveAbsolute:=FALSE will
remain.

• This function uses a modified sine pattern to ‘meter in’ the change from

0 to 100% of the adjustment change required as described above.

• A master/slave relationship is defined the first time a Y_CamIn,

Y_CamShift, Y_CamScale, or Y_SlaveOffset block completes (Done
output is TRUE.) The "first time" is defined as power up or after
completion of Y_CamOut. If the master/slave relationship is already
defined, then it is checked for consistency, and if not correct, the block
produces an error (Invalid master slave combination).

• Only BufferMode=MC_BufferMode#aborting or

MC_BufferMode#buffered is supported. If MC_BufferMode#aborting,
then the function block will abort any phase shifts, cam shifts, cam
scaling that are currently taking place; it will not abort the underlying
Cam or gearing. If MC_BufferMode#buffered, then the phase shift will
occur after all previous phase shifts, cam shifts, cam scalings complete.

• For more information on slave offset behavior, see the

Cam Transition

Matrix

.

• For more information on how slave offset applies to camming, see the

Camming Block Diagram

.

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