HP 3468A - Chapter IV: Basic Language Programming; Introduction to Basic Language Programming

Chapter 1V
Basic
Language
Programming
Introduction
In
this
chapter
you
will
learn
about
remote
programming
your
3468A
over
the
Hewlett-Packard
Interface
Loop
(HP-IL)
using
a
computer
/
controller.
The
-hp-
Model
85
computer
with
an
82938A
HP-IL
interface
module
is
used
in
the
ex-
amples.
If
you
are
not
familiar
with
HP-IL
or
some
of
the
terms
used
in
this
chapter,
Appendix
A
contains
a
concise
description
of
HP-IL.
Be
sure
that
you
have read through or at least familiarized
yourself with Chapter 2 of this manual
before
starting
this
chapter.
You
will
need
to
understand
the
operating
characteristics
of
the
3468A
before
you
begin
programming
it.
Do This
Turn
off
both
the
controller
and
3468A.
Connect
the
3468A
to
the
controller
HP-IL
interface,
Make
sure
that
no
other
devices
are
con-
nected
to
the
interface.
Turn
the
3468A
on
and
wait
until
it
finishes
its self test, but do not turn on the controller.
Press:
The
3468A
will
display
its
factory
[4
preset address: ADDRESS
22.
Now,
turn
on the
controller
and
wait
a
few
seconds
for
the
display
to
come on.
Again,
press:
When
the
controller
was
turned
on,
it
automatically
assigned
addresses
to
CA
each device in the loop. Since the
3468A is the only device in the loop it
is assigned an address of 1.
Trying Out a Command
Before
we
actually
begin
the
programming
discussion,
let’s
look
at
a
simple
exam-
ple
that
displays
your
name
on the
3468A
display.
If
you
have
an
-hp-
Model
85
or
other HP-IL
controller,
enter
the
command
as
shown
below.
Use
your
own
name,
or
any
message
up
to
12
characters
(capital
letters
only),
in
place
of
‘‘your
name’.
Type The Message: Press:
OUTPUT 901;‘D2your name’’ [END LINE}
63