Solartron 1287 - Local Lock-Out; Remote;Local Facility

4.1
LOCAL LOCK-OUT
The REMOTE/LOCAL
facility described above
can also have
a LOCAL
LOCK-OUT
condition
superimposed
by a command from the
controller. Once
LOCAL
LOCK-OUT is
on, transfer of control from one device
to another
can be
accomplished only
by the GPIB controller.
This
facility can
be used, for example,
to prevent unauthorised front
panel
manipulations
affecting the
settings of the SI1287.
The state diagram
in figure
4.6 shows
the relationship
between the
LOCAL LOCK-OUT
feature to
the
REMOTE
and LOCAL states previously
shown in figure
4.5.
The LOCAL
LOCK-OUT state is
cancelled when the REMOTE
ENABLE
signal
from the
controller is false, i.e.
the controller sends
REN.
Note that if
the controller sends
"GO TO LOCAL", then
the LOCAL state
which
was
previously in force
is resumed.
4.12
CSB/S11287 User Guide/Issue
AA