Tabie
2-10. IEEE-488
Address
Mode Message
Descriptions (cont)
1
MESSAGE DESCRIPTION
Listener
The Generator unlistens
and untalks
when
the IFC
message
Operation is
received.
OTA
Other
Talk Address
Talker
Operation
The Generator untalks
when
the
OTA
message is
received.
SPE
Serial Poll Enable
Talker After
receiving the SPE message, the
Generator responds
Operation with
the serial poll status byte, if addressed to talk.
SPD
Serial
Poll Disable
Talker After receiving
the SPD message, the Generator
resumes
Operation normal talk
operation.
ULA
Unlisten Address
Listener
The Generator unlistens when
the ULA message is
Operation
received.
RSV
Request Service
Service
The front panel SRQ
indicator
is
Lit
when the
rsv
Operation message is
sent. The Generator
may request
service
for
several reasons. Each
reason for service request
can be
individually masked with
the set mask command
("SM”). The service
request mask can be
interrogated with
the interrogate mask
command ("IM").
DCL
Device Clear
Clear
The DCL message
is
ignored
when
in
local.
When the
DCL
Operation message
is
received (during
remote operation)
the
Generator
is
cleared. Any
characters
in
the input buffer
are cleared followed by
the same operation as the clear
command ("CL”). The
operation
of
the DCL message is
identical
to the operation of the selected device clear
(SDC)
message. The cleared state of
the Generator
is
described in the paragraphs on
Power-On Conditions.
SDC
Selected Device
Clear
Clear
The SDC message is ignored during
Local
operation.
Operation
When the SDC message is received (during
rmote
operation), the
Generator
is
cleared. Any
characters
in
the input buffer are
cleared followed
by
the
same
operation
as
the clear command ("CL").
The operation of
the
SDC message is
identical to the operation of
the device
clear
(DCL) message. The
cleared state
of
the Generator
is described in
the paragraphs on Power-On
Conditions.