
B-64663EN/01 LASER FUNCTION 8.CONTROL FUNCTION
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- Retrace signal
RVS<G007#0>
[Classification] Input signal
[Function] Starts retracing.
[Operation] If both retry processing mode selection signal (RVSLSR) and
automatic operation stop signal (SPL) are "1", setting the retrace
signal (RVS) to "1" retracts the Z-axis and triggers a retrace. When
retracing ends and the automatic operation stop signal (SPL) becomes
"0" resetting the retrace signal (RVS) to "0" to trigger a cycle start
causes forward tracing.
- Retrace-in-progress signal
RVSL<F082#2>
[Classification] Output signal
[Function] Informs the PMC that the nozzle is moving backward along the
machining path.
[Output condition] This signal becomes “1” when:
- The retrace signal (RVS) becomes "1" to begin retracing.
This signal becomes “0” when:
- The retrace signal (RVS) becomes "0" to begin forward tracing
(including restarted forward tracing).
- The nozzle is at a stop because there is no block to retrace.
During retracing, the M, T, and second auxiliary functions are
executed in the same way as during a forward trace. If this is
undesirable, use the retrace-in-progress signal (RVSL) to direct the
PMC to perform its own processing.
If the M, T, or second auxiliary function is in the same block as a
move command, the output position of the code and strobe signals
differs between forward tracing and retracing. So, use this signal and
the distribution end signal (DEN), as required, to direct the PMC to
perform its own processing.