Remote
Programming
TALK-ONLY
MODE
Table
3-3.
Immediate-Mode Commands
for
Val
FUNCTION
PERFORMED
FLUKE-BASIC
on
1720A
or
1722A
INITIALIZE Port
CLEAR lnstrument
REMOTE Commands
LOCAL Control
EXTERNAL TRIGGER
TRIGGER lnstrument
GET Output Data
PRlNT Data to Screen
CONFIGURE for VAC
CONFIGURE for
200Vac
TRIGGER Continuously
SUFFIXES Enable
GET Data
B
Suffix
PRlNT Data
B
Suffix
-
-
INIT PORT 0
CLEAR @4
REMOTE @4
LOCAL @4
PRINT @4."TlW
TRIG @4
,
INPUT @4,A
PRINT A
PRlNT
@4."F2
PRlNT @4."R4"
PRlNT @4,"TO
PRlNT @4."Yl"
INPUT @4, A.A$
,
PRlNT A.A$
Notes:
HP-HPL
on
HP9825
Calculator
cli 7
clr 704
rem 704
Icl 704
wrt
704,"TlW
trg 704
red 704, A
prt A
wrt 704,"F2"
wrt 704,"R4
wrt
7O4,"TOn
wrt 704,"Yl"
red 704,A,A$ (Note
1)
prt A$,A
)us
Controllers
HP-BASIC
on
HP9816-PC
and
HP-85
Calculator
CLEAR 7
CLEAR 704
REMOTE 704
LOCAL 704
OUTPUT
704;"Tl"
TRIGGER 704
ENTER 704;A (Note 2)
PRINT A (Note
2)
OUTPUT 704;"FZ
OUTPUT 704;"RC
OUTPUT 704;"TO
OUTPUT 704;"Yl"
ENTER 704;A,A$ (Note
2)
PRlNT A,A$ (Note
2)
TEK-BASIC
on
4051
Graphics
Systen
INIT
PRINT
@I:"*"
WBYTE Q36.17:
WBYTE @36,'1:
PRlNT
@:"TI"
PRlNT @4:"?"
INPUT @4:A
PRlNT A
PRlNT
@4:"F2
PRlNT @:Ti4
PRlNT
@:"TO"
PRINT
@4:"YIw
INPUT W:A,A$
PRINT A,A$
1.
Before using A$ on the9825 is necessary to
enterUdim A$[6]" to allocate astring variable.Thisstatement allows six characters.
2. In the HP9816 system, variables cannot be created from the keyboard; they must be created by running a program. (See error
910 for that system.) To get around this, type in a very short program as follows:
SCRATCH (Hit "EXEC" key)
10A=O (Hit "ENTER" key)
20 A$
=
-"
(Hit "ENTER" key)
30 END (Hit "ENTER" key)
(Hit "RUN" key)
This program creates the variables
'A'
and 'A$' so that they may be accessed in immediate mode and changed at will. This
program is not necessary for the HP-85 Calculator.
3-58.
TIMING CONSIDERATIONS
-
3-60.
DCAMPLE PROGRAMS
To help you take the best advantage of the speed of the
8840A,
external trigger timing for the IEEE-488 Interface
is described in the specifications
in
Section
1.
3-59.
IMMEDIATE MODE COMMANDS
Many controllers have some amount of "immediate mode"
capability. That is, commands may
be
given interactively
to the
8840A
via the run-time-system without the need for
actually running a program. The controller accepts and
executes these commands one at a time. Some commonly
used commands are listed in Table
3-3
for several con-
trollers. These are provided for the convenience of im-
ment demonstrations, set-up and check-out, and for thosec
with limited experience with IEEE-488 bus operations.
As
a general note: The entire
8840A
command set should
work well provided the "port clear" and "device clear"
commands are given first. You should then
be
abie to send
any other commands in the
8840A
command set without
repeating the clearing commands.
Several example programs for the
8840A
using various
controllers are presented in the remaining figures in this
sedion. In all of these examples, the
8840A
is set to
IEEE-488 address
4
(rear panel switch setting 000100).
Of
course, any other address
(00
to
30)
could
be
substituted.
In each of these examples, the instrument is cleared prior
to configuration set-ups. This ensures that the
8840A
configuration has been completely defined.
To run these programs, it
is
not necessary to type in all the
comments (which
appear
to
the
right of
the
exclamation
marks).
Also,
spaces are placed between commands for
ease of reading; they are not required.
NOTE
For the examples using the Fluke
I720A
or
1722,
the
8840A
is plugged into port
0.
The
port
is
initialized
by
the INIT statemen4 which
sends
IFC (interface clear).
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