The machine has been running nicely for years.
In the middle of a part it halted.
Upon restart everything came up but we have the message at the bottom of the display, "MASTER START REQUIRED".
Of course we have pushed Master Start buttom, no response.
We have scoured the manuals, no help that we can decipher.
The display is functional, everything seems to have power.
What should I do next?
Thanks -