0: The keys on the operation
panel are not locked, and all the
keys are usable.
1: The keys on the operation
panel
are locked, and all the keys are
unusable.
2: All the keys except for the
multi-functional key are unusable.
3: All the keys except for the
SHIFT key are unusable.
4:All the keys except for the RUN
AND STOP keys are unusable.
0: All parameters are allowed
modifying;
1: Only A0.03 and b4.02 can be
modified;
2: Only b4.02 can be modified.