Owner's manual

Running a Program
Chapter 7
7-33
The block retrace function is unable to retrace any of the following blocks
and an attempt to do so will result in an error message.
Threading
Tapping
Boring
Inch/Metric changes (unit conversion)
A block that commands a tool change operation.
A block that commands a change in the coordinate system.
Any block that is followed by a Manual Jog Move except a Jog Retract.
The number of blocks retraced is already equal to the maximum number
of re-traceable blocks as determined in AMP.
Certain Paramacro Parameter Assignments
Interrupt Macros
CAUTION: If the block retrace function is deactivated during
its execution (performing a control reset, E-STOP, etc...),
attempting to return the tool by pressing cycle start may cause
an undesired return path. The tool will return to the start point
of block retrace along a linear path. T his is most likely not the
retracted path. To avoid possible part or tool damage it is
recommended that t he cutting tool be jogged to the point from
which block retrace was started prior to pressing cycle start.
Figure 7.8
Pressing Cycle St a rt When Ret ract Path is Lost
Block retrace
aborted here
Startpoint
ofblock
retrace
Normalblock retrace path
Return pathtakenwhen
cycle startis pressed after
blockretraceisaborted
END OF CHAPTER