OPERATION6. SAFETY FUNCTIONS
Each limit becomes effective after the power is turned on and manual
reference position return or automatic reference position return by G28
has been performed.
After the power is turned on, if the reference position is in the forbidden
area of each limit, an alarm is generated immediately. (Only in G22 mode
for stored stroke check 2).
When the tool has become unmovable in the forbidden area, push the
emergency stop button to release the forbidden condition and move the
tool out of the forbidden area in the G23 mode; then, if the setting is
wrong, correct it and perform the reference position return again.
When G23 is switched to G22 in the forbidden area, the following results.
(1)When the forbidden area is inside, an alarm is informed in the next
(2)When the forbidden area is outside, an alarm is informed immediately.
In setting a forbidden area, if the two points to be set are the
same, the area is as follows:
(1)When the forbidden area is limit 1, all areas are forbidden
(2)When the forbidden area is limit 2, all areas are movable
(3)Neither stored stroke check 1 nor 2 exist in T–axis and
Parameter BFA (bit 7 of No. 1300) selects whether an alarm is displayed
immediately before the tool enters the forbidden area or immediately after
the tool has entered the forbidden area.
Number Message Contents
500 OVER TRAVEL: +n Exceeded the n–th axis (1–8) + side stored
stroke check I.
501 OVER TRAVEL: –n Exceeded the n–th axis (1–8) * side
stored stroke check I.
502 OVER TRAVEL: +n Exceeded the n–th axis (1–8) + side stored
stroke check II.
503 OVER TRAVEL: –n Exceeded the n–th axis (1–8) * side
stored stroke check II.
D Effective time for a
D Releasing the alarms
D Change from G23 to
G22 in a forbidden area
D Timing for displaying