Lenze PLC Designer PLC Designer (R3-1) - Manual (Page 637)

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DMS 4.1 EN 03/2011 TD29 635
Time synchronisation with interpolator
Command G75
This command in DIN 66025 prevents the function block decoder from processing the
G-Code until the interpolator has passed all preceding objects. When the interpolator
has reached G75, all queues are empty and the NCDecoder (and all preprocessing FBs)
continue.
This function is useful when using variables. The variables are replaced by the decoder
when it processes the corresponding line, but the executing by the interpolator
happens, due to the Queue mechanism a certain time later. G75 can be used to wait
and "synchronize" the evaluation and the variable and the processing by the
interpolator.
Allowed syntax
G40
G75
Example:
N10 G1 X100
N20 G75
N30 G1 Y$g_y$
In this example the variable g_y is provided in element G10 and is not known before. If
G75 is not used, the NCDecoder will process line 30 immediately, before the value is
known.
G75 has no effect in the CNC editor or paths that are generated as OutQueue by the
CNC editor.