(1)Check manual operation is possible.
(2)Check the status of cycle start LED on machine operator’s manual.
(3)Check status of Power Mate.
When manual operation is either impossible, perform countermeasure,
based on the previous item “Jog operation cannot be done”.
Confirm that a correct mode is selected according to the mode select status
of Power Mate status display. Also, by confirming the automatic
operation status it is possible to identify cycle operation, feed hold and
cycle stop state.
The Power Mate status display on the lower section of the CRT screen
appears as: ****
(1)Mode select signal is not correct.
When the mode select signal is input correctly, following status
display is done.
MDI :Manual data input mode (MDI)
AUTO :Automatic operation mode
RMT :DNC operation mode
If status display does not show a correct status, check the mode signal
with following diagnosis function of PMC side (PMCDGN).
#4 #3 #2
DNCI MD4 MD2 MD1 Mode select
– 0 0 0 Manual data input mode
0 0 0 1 Automatic operation mode
1 0 0 1 DNC operation mode
(2)Cycle start signal is not input
This signal turns 1 when cycle start button is pressed and turns 0 when
it is released. The cycle start actuates when it changes from 1 to 0.
Check the state of the signal using PMC’s diagnostic function
#6 #5 #4 #3 #2
ST : Cycle start signal
* The cycle is allowed to start by setting of parameter (No. 3001#1)
when it changes from 1 to 0.
(3)Feed hold signal is input
Under normal state, the feed hold signal is 1 when the feed hold button
is not pressed.
Check the state of this signal using the PMC’s diagnostic function
Causes and Remedies
1. When cycle operation is
not started (Cycle start
LED does not light)