
B–63525EN/02
11.TROUBLESHOOTING
731
(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
G0043
#6 #5 #4 #3 #2
MD4
#1
MD2
#0
MD1
Manual operation (JOG) mode 1 0 1
↓↓↓
(2)Feed axis and direction select signal is not input Check the signal using
PMC’s diagnostic function (PMCDGN).
#7
+J8G0100
#6
+J7
#5
+J6
#4
+J5
#3
+J4
#2
+J3
#1
+J2
#0
+J1
–J8G0102 –J7 –J6 –J5 –J4 –J3 –J2 –J1
G0086 –Ja +Ja –Jg +Jg
When a bit is “1”, the corresponding feed axis direction
selection signal has been entered.
)
g:Both X– and Y–axes simultaneously (feed along a straight line or circle)
a:Both X– and Y–axes simultaneously (feed in the normal direction)
J
) : Feed in the ) direction
* : Feed in the * direction
Example)
In the normal state, pressing the “+X” button on the operator’s panel
causes the signal +Jn to be displayed as “1”.
* This signal becomes effective when the rise of the signal is
detected. If, therefore, the direction selection signal has been
entered before jog mode selection, axis movement is not
performed; set the bit “0” and then re–check the signal.
11.3
JOG OPERATION
CANNOT BE DONE
Points
Causes and Remedies
1. Position display
(relative, absolute,
machine cooordinate)
does not change