
8. TROUBLESHOOTING
B–62835EN/01
264
(1)Check another manual operation (JOG) is accepted.
(2)Check status display
Consult with Sec. 8.3 and 8.4.
(1)Check CNC status display at lower left corner of the CRT
(Refer to 1.7 STATUS DISPLAY for details)
When the status display shows STEP, mode selection is correct.
If it is not STEP, mode select signal is not input correctly. Check the
mode select signal using the PMC’s diagnostic function(PMCDGN).
#7 #6 #5 #4 #3 #2 #1 #0
G0043 MD4 MD2 MD1
Manual handle mode 101
±±±
(2)Manual handle feed axis select signal is not input
Check the signals using PMC’s diagnostic function (PMCDGN).
#7 #6 #5 #4 #3 #2 #1 #0
G0018 HS2B HS2A HS1C HS1B HS1A
When axis select switch for manual pulse generator is selected on the
machine operator’s panel, if the signals are input as follows, it is
normal.
Selected axis HSnB HSnA
no selection
1st axis
2nd axis
0
0
1
0
1
0
n represents the manual pulse generator (MPG) number.
8.5
HANDLE OPERATION
(MPG) CANNOT BE
DONE
Points
Causes and
Countermeasure
1JOG operation is not
acceptable, either
2When only handle
operation cannot be
done