FANUC Series 16/18/160/180-Model C for Lathe Operator Manual

6. SAFETY FUNCTIONS
B–62754EN/01
OPERATION
544
An entry–inhibition area is defined using the workpiece coordinate
system. Note the following.
1 When the workpiece coordinate system is shifted by means of a
command or operation, the entry–inhibition area is also shifted by the
same amount.
Machine coordinate system
Entry–inhibi-
tion area
Old workpiece
coordinate system
Entry–inhibi-
tion area
New workpiece
coordinate system
Use of the following commands and operations will shift the workpiece
coordinate system.
Commands:
G54 to G59, G52, G50 (G92 in G code system B or C)
Operations:
Manual handle interrupt, change in offset relative to the workpiece
reference point, change in tool offset (tool geometry compensation),
operation with machine lock, manual operation with machine absolute
signal off
2 When the tool enters an entry–inhibition area during automatic
operation, set the manual absolute signal, *ABSM, to 0 (on), then
manually retract the tool from the area. If this signal is 1, the distance
the tool moves in manual operation is not counted in the tool
coordinates in the workpiece coordinate system. This results in the
state where the tool can never be retracted from the entry–inhibition
area.
When both stored stroke limit 2 and the chuck–tailstock barrier function
are provided, the barrier takes priority over the stroke limit. Stored stroke
limit 2 is ignored.
Number Message Contents
502
OVER TRAVEL: +X The tool has entered the entry–inhibition
area during positive–direction movement
along the X–axis.
OVER TRAVEL: +Z The tool has entered the entry–inhibition
area during positive–direction movement
along the Z–axis.
503
OVER TRAVEL: –X The tool has entered the entry–inhibition
area during negative–direction movement
along the X–axis.
OVER TRAVEL: –Z The tool has entered the entry–inhibition
area during negative–direction movement
along the Z–axis.
D Coordinate system
D Stored stroke limit 2
Alarms

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