Fast Retraction During Thread Cutting - Siemens SINUMERIK 840D sl Function Manual

V1: Feedrates
17.2 Path feedrate F
MD11410 $MN_SUPPRESS_ALARM_MASK bit 10 = 1
Block preparation is then continued normally.
Monitoring during the execution
The following situations are monitored cyclically when the thread is machined (interpolation):
● Exceeding of maximum velocity of thread axis
● Reaching of axis standstill with G35
The following alarm is signaled when the monitoring function responds:
● Alarm 22269 "Maximum velocity of thread axis reached" or
● Alarm 22275 "Zero velocity of thread axis reached"
17.2.3.4

Fast retraction during thread cutting

Function
The "Fast retraction for thread cutting (G33)" function can be used to interrupt thread cutting
without causing irreparable damage in the following circumstances:
● NC stop (NC/PLC interface signal)
● Alarms that implicitly trigger NC stop
● Switching of a rapid input
References
Programming Manual, Job Planning; Section "Fast retraction from the contour"
The retraction motion can be programmed via:
● Retraction path and retraction direction (relative)
● Retraction position (absolute)
Note
Tapping
The "Fast retraction" function cannot be used with tapping (G331/G332).
Programming
Syntax
Enable fast retraction, retraction motion via retraction path and retraction direction:
G33 ... LFON DILF=<value> LFTXT/LFWP ALF=<value>
Enable fast retraction, retraction motion via retraction position:
POLF[<axis name>]=<value> LFPOS
POLFMASK/POLFMLIN(<axis 1 name>,<axis 2 name>, etc.)
G33 ... LFON
1322
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions