DORIS: The Undulator Controller got stuck (BW1, BW3)

After a gap move is completed, the left display field has to show -||-. If this is not the case, press the Reset button. If this does not cure the problem, make sure that register 812 contains a 1:

• Turn the key to position P.
• Enter 812 and press ==> to load. In the right display field you find a 1, which is correct, or a 0.
• If register 812 contains 0, enter 1 and press ==>.
• Turn key back (square made of four arrows).

Procedure by R. Wengler.