
OPERATION
B–63664EN/02
6. SAFETY FUNCTIONS
547
When a stroke limit check prior to movement is performed, whether to
check the movement performed by a G31 (skip) block can be determined
using NPC (bit 2 of parameter No. 15600).
If machine lock is applied at the start of movement, no stroke limit check
made before movement is performed.
When a program is restarted, an alarm is issued if the restart position is
within a inhibited area.
When the execution of a block is restarted after manual intervention
following a feed hold stop, no alarm is issued even if the end point
following a manual intervention is within a inhibited area.
If a block consisting of multiple operations is executed, an alarm is issued
at the start point of any operation whose end point falls within a inhibited
area.
In simple synchronous control, only the master axis is checked; no slave
axes are checked.
In three–dimensional coordinate conversion mode, no check is made.
No check is performed while drawing is being performed as part of
dynamic graphic display (only drawing (no machining) is being
performed).
No check is made for a movement based on PMC axis control.
No check is made for a movement based on high–speed, high–precision
contour control (HPCC).
Number Message Contents
4700 PROGRAM ERROR
(OT +)
The value specified in the X-axis move com-
mand exceeded the positive value of stored
stroke limit 1. (Advance check)
4701 PROGRAM ERROR
(OT –)
The value specified in the X-axis move com-
mand exceeded the negative value of stored
stroke limit 1. (Advance check)
4702 PROGRAM ERROR
(OT +)
The value specified in the Y-axis move com-
mand exceeded the positive value of stored
stroke limit 1. (Advance check)
4703 PROGRAM ERROR
(OT –)
The value specified in the Y-axis move com-
mand exceeded the negative value of stored
stroke limit 1. (Advance check)
4704 PROGRAM ERROR
(OT +)
The value specified in the Z-axis move com-
mand exceeded the positive value of stored
stroke limit 1. (Advance check)
4705 PROGRAM ERROR
(OT –)
The value specified in the Z-axis move com-
mand exceeded the negative value of stored
stroke limit 1. (Advance check)
Explanations
Limitations
D Machine lock
D Program restart
D Manual intervention
following a feed hold
stop
D A block consisting of
multiple operations
D Simple synchronous
control
D Three–dimensional
coordinate conversion
D Drawing
D PMC axis control
D High–speed
high–precision contour
control (HPCC)
Alarm