HEIDENHAIN iTNC 530 (34049x-08) ISO programming - Manual (Page 342)

342 Programming: Miscellaneous functions
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.4 Miscellaneous functions f
o
r cont
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vior
Suppressing the limit switch message: M150
Standard behavior
The TNC stops program run with an error message if the tool were to
leave the active working space during a positioning block. The error
message is output before the positioning block is executed.
Behavior with M150
If the end point of a positioning block with M150 is outside the current
working space, the TNC moves the tool to the edge of the working
space, and then continues the program run without an error message.
Effect
M150 is effective only in straight-line blocks and the block in which it
is programmed.
M150 becomes effective at the start of block.
Danger of collision!
Keep in mind that the approach path to the position
programmed after the M150 block might be changed
significantly!
M150 is also effective on traverse range limits defined
with the MOD function.
M150 is effective even if you have the handwheel
superimposition function active. The TNC then moves the
tool by the defined maximum value of the handwheel
superimposition away from the limit switch.
When dynamic collision monitoring (DCM) is active, the
TNC might move the tool only until it detects a collision
and, from there, complete the NC program without any
error message. This can result in tool paths different from
those programmed!