Program Execution / Subroutines 04.97
3.4.4 Program start after activation of block search forwards
Program decoding is effected from the beginning of the program. Axis movements and the
output of M-functions are only effected from the defined entry point. Tool offsets, zero point
offsets, self-holding G-functions and velocities are maintained up to the entry point.
Important hints:
• If a jump is made to a block with incremental dimension (G91), the entire traversing path
will be traversed, even if before the program abortion part of the path was already
traversed.
• M-functions of the block jumped to will be output, even if they were already output before
the program abortion.
• If a program execution is interrupted and the M-functions are still pending, they will be
deleted through the block search forwards.
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Siemens AG 1997 All Rights Reserved 6ZB5 440-0VU02
WF 723 C (Programming Guide)
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