
B–62075E/04
5. TROUBLESHOOTING
281
(1)Check whether position display is operating.
(2)Check CNC status display
(3)Check internal status using Diagnostic funciton
(1)Check mode selection status (JOG mode is not selected)
When status display shows JOG, it is normal.
When status display does not show JOG, mode select signal is not
selected correctly. Confirm the mode select signal using PMC’s
diagnostic function (PMCDGN).
<Mode select signal>
#7
G003
#6 #5 #4 #3 #2
J
#1 #0
(M/T series)
#7
G097
#6 #5 #4 #3 #2
J
#1 #0
(TT series)
(2)Feed axis and direction select signal is not input Check the signal using
PMC’s diagnostic function (PMCDGN).
#7
+J8G100
#6
+J7
#5
+J6
#4
+J5
#3
+J4
#2
+J3
#1
+J2
#0
+J1
–J8G102 –J7 –J6 –J5 –J4 –J3 –J2 –J1
Example)
When +X button is pressed on the operator’s panel, signal+J1 turns
to 1.
* This signal is effected at its rise. If axis selection signal is input
before JOG mode is selected, axis movement does not occur. Turn
the signal to off, then on.
(3)Check the status according to CNC diagnostic function Nos. 1000 and
1001. Investigate any items for which 1 is displayed on the right.
No. 1001
a. INPOSITION CHECK
FEEDRATE OVERRIDE 0
b. JOG FEED OVERRIDE 0
c. INT./START LOCK ON
SPEED ARRIVAL ON
WAIT REVOLUTION
STOP POSITION CODER
FOREGROUND READING
5.4
JOG OPERATION
CANNOT BE DONE
Points
Causes and Remedies
1. Position display
(relative, absolute,
machine cooordinate)
does not change