Mitsubishi Electric QD77MS User Manual page 648

Operations when stroke limit error occurs
When the hardware stroke limit error or the software stroke limit error is detected
(Note-1)
of "[Md.26] Axis operation status", "Manual pulse generator operation" will
continue
the outside direction of the limit range are not accepted, but operation can be
executed within the range.
(Note-1): Only when the current feed value or the machine feed value overflows or
Upper/lower
limit signal
Manual pulse generator operation timing and processing time
The following drawing shows details of the manual pulse generator operation
timing and processing time.
[QD77MS4 operation example]
Cd. 21 Manual pulse generator
enable flag
Input pulses from
manual pulse generator
BUSY signal [XC, XD, XE, XF]
Start complete signal
[X10, X11, X12, X13]
Md. 26 Axis operation status
Positioning operation
Fig. 11.17 Manual pulse generator operation timing and processing times
during operation, the operation will decelerate to a stop. However, in case
(Note-1)
. After stopping, input pulses from a manual pulse generator to
underflows during deceleration, the manual pulse generator operation will
terminate as "error occurring". To carry out manual pulse generator operation
again, "[Cd.21] Manual pulse generator enable flag" must be turned OFF once
and turn ON.
V
Manual pulse generator
operation possible
ON
0 1
t1
The start complete signal does not turn ON in manual pulse generator operation.
Standby (0)
11 - 26
Manual pulse
generator operation
Manual pulse generator
operation not possible
OFF
t3
Manual pulse generator operation
t2
(Note): Refer to Section 3.3 for input/output signal of QD77MS16.
Chapter 11 Manual Control
0
t4
Standby
(4) (0)