Measurement Computing Analyzer488 - Manual (Page 136)

Section 4 Serial Controller
4.42
LISTEN
The LISTEN command sets the Analyzer488 to the Listen State when in the
Low Level Controller Mode (CONTROLLER OFF). Once the LISTEN command has
been executed, the READ command may be used to accept data from the bus, one
event at a time.
The query option, LISTEN?, returns the current Listen or Talk State of the
Analyzer488. LISTEN is returned if it is functioning in the Listen State, TALK is
returned if functioning in the Talk State.
TYPE Low Level Controller command
SYNTAX LISTEN[?]
RESPONSE None
MODE Low Level Controller
BUS STATES Dependent on data sent from active talker
QUERY LISTEN if in Listen State, TALK if in Talk State.
RESPONSE
EXAMPLES PRINT#1,"CONTROLLER OFF"
PRINT#1,"ASSERT IFC ATN REN"
PRINT#1,"UNASSERT IFC"
PRINT#1,"TALK"
PRINT#1,"HANDSHAKE STEP"
PRINT#1,"WRITE &H54"
PRINT#1,"UNASSERT ATN"
PRINT#1,"LISTEN"
PRINT#1,"READ"
INPUT#1,A$;PRINT A$
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