Hardcopy Program (Service Request Using Opc) - HP 54501A Programming Reference Manual

Hardcopy
Program
(Service
Request
using OPC)
This sample program demonstrates
some
of
the commands
in the
HARDCOPY
subsystem.
The
service request is used
to detect when the
printing
is
complete.
The
program assumes
that
a
graphics printer
is
used
and
its address
is set
to
1.
10
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90
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190
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260
CLEAR
707
OUTPUT
707;":EOI
ON"
ON INTR
7.5
GOTO 220
ENABLE INTR
7;2
OUTPUT 707
OUTPUT 707
OUTPUT 707
OUTPUT
707
OUTPUT 707
OUTPUT
707
SEND
7.UNT
UNL
SEND
7;TALK 7
SEND 7;LISTEN 1
SEND
7;DATA
GOTO 190
A=SPOLL(707)
OUTPUT
707;":SYSTEM:DSP 'PRINT IS
COMPLETE"'
WAIT 15
OUTPUT 707;":SYSTEM:DSP
""
END
"*CLS"
"*ESE 1"
"*SRE
32"
":HARDCOPY:PAGE AUTOMATIC"
":HARDCOPY:LENGTH 12"
":PRINT?;*OPC"
'Device clear
command.
!initializes HP-IB
registers.
'Turn
on EOI
!Exit printing routine
'after
SRO
•Enables
SRQ on bus #7
!C1ear status data structures
!Enab1e
OPC
'Enable Event Status
Register
•Interrupt
!Set OPC
when the
•print
is complete
!C1ears bus
•Puts the scope in talk
mode
!Te11s printer to listen
•Lowers
ATN
line @
controller
•Loops
until printing is
•complete and interrupt
!is
generated
•dear
service request
HP 54501A
Programming
Example Programs
B-11