Okuma Alarm-D 4227 External start not possible
The cycle start switch is pressed when the external start disable signal is input.
Probable Faulty Locations
I/O check input No.20 bitE
Operation Example:An attempt is made to start the cycle when the external start disable signal stays on.
Measures to Take
(1)Start the cycle after resetting the NC or turning off the external start disable signal.
(2)Reset the work counter.