"Not ready" state Fanuc 0-P

Hello everyone,

As title, i have a press punch CNC Murata's machine!
It use 0-P Fanuc controller!
Now, i am in a trouble follow as: When i press "ON" button, the screen display "Not ready" state so I can't operate the machine! (as photo below)
I can't press any button on the control panel except "ON", "OFF" "EMC" button!
I checked volts DC on the board: +5v, +24v, +15v, -15v . All are fine!
But on the mother board, red Led "SO" light! (as photo below)

So can you help me? This is very necessary with me!

Thank for your reading and best regard!