Lenze PLC Designer PLC-Designer (R2-x) SoftMotion - Manual (Page 182)

DMS 5.2 EN 03/2011 TD17
L
182
L-force | PLC Designer - SoftMotion
The SM_CNC.lib library
SMC_CheckVelocities
7.7 SMC_CheckVelocities
This POU checks the speeds of the individual path segments. It must always be called
directly before the interpolator if the OutQueue has been created not by the Editor but in
the IEC program (e.g. by the SMC_NCDecoder).
This function's main task is to check the path for bends and to reduce the velocity to zero
at such bends.
Inputs (VAR_IN)
bExecute: BOOL
The check will start on a rising edge.
poqDataIn: POINTER TO SMC_OUTQUEUE
This input points to the SMC_OUTQUEUE structure object that contains the
SMC_GEOINFO objects of the path, typically to the poqDataOut output of the preceding
POU (e.g. SMC_NCDecoder/SMC_SmoothPath).
dAngleTol: REAL
This input describes the angle tolerance value up to which no stop should be executed at a
path bend.
Outputs (VAR_OUT)
bError : BOOL
This value will be set to TRUE if an error occurs.
wErrorID: SMC_ ERROR (INT)
If applicable, this enum output will describe an error.
poqDataOut: POINTER TO SMC_OUTQUEUE
This output points to the SMC_OUTQUEUE structure object that contains the path with the
permissible velocity values and will now be fed to the interpolator directly.