July 2013 3.29 MB 720 (FS) machine operating panel 335
X31: MB 720,
permissive button /
NC-start / NC-stop
The NC start and NC stop keys are connected directly on the keyboard PCB of
the MB via the X14 and X15 connections and are evaluated as with the other
machine keys, see "Key assignment for machine operating panel" on page 324.
The keys are configured via the HDD file with IOconfig. Alternatively the keys
can be connected to the X31 connection. In this case the assignment specified
in the tables below applies and separate handling of the keys with IOconfig is
necessary.
The NC start key is a normally open contact, and the NC stop key is normally
closed.
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