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6-66 Chapter 6: Programming
Model 801GC, 801GF & 801GX¥Rev. A
which may cause the 801G* to induce a service re-
quest. For more information about setting up these
conditions, see the *SRE common command descrip-
tion.
Remote/Local Operation
The 801G* has complete remote/local operation as
defined by the IEEE-488.1 standard. All four remote/
local states REMS, LOCS, RWLS and LWLS are sup-
ported.
In the remote state (REMS), the 801G* is under re-
mote control and messages are processed as received.
The remote with lockout state (RWLS) will be en-
tered if the controller issues the LLO (local lockout)
message to the 801G*. The local state (LOCS) will
be entered when the REN line goes false or the con-
troller issues the GTL (go to local) message to the
801G*, or a front panel control is actuated.
In the remote with lockout state (RWLS), the 801G*
is under complete remote control and front panel
controls are disabled. The RWLS state is entered when
the controller issues the LLO (local lockout) mes-
sage to the 801G*. Front panel access is re-enabled
when the controller issues the GTL (go to local)
message to the 801G*.
In the local state (LOCS), the 801G* is under local
control and all front panel controls are enabled. Any
remote messages received will be stored for pro-
cessing when the 801G* enters the remote state again.
The remote state (REMS) will be entered if the REN
line is true and the 801G* is addressed to listen.
In the local with lockout state (LWLS), the 801G* is
under local control and all front panel controls are
enabled. Any remote messages received will be stored
for processing when the 801G* enters the remote
state again. The remote with lockout state (RWLS)
will be entered if the 801G* is addressed to listen.