EasyManua.ls Logo

IBM 1 Series - Application Summary; Implementation of IEEE Standard 488

IBM 1 Series
198 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Loading...
Application
Summary
The
GPIB
adapter
can
interface
with
different
types
of
devices,
such
as:
printers,
keyboards
plotters,
card
readers,
tape
drives,
graphic
displays,
and
testing
instrumentation (such
as
digital
voltmeters,
oscilloscopes,
signal
generators,
and
frequency
analyzers).
Because
of
the
asynchronous
transfer
architecture
of
IEEE
Standard
488,
there
are
no
transmission
limitations
on
intercommunication
between
unrelated
devices;
the
slowest
device
governs
the
data
rate.
This
technique
provides
a
solution
to
the
common
problems
of
data
overrun,
baud-rate
compatibilities,
and
synchronous
communication.
Implementation
of
IEEE
Standard
488
The
Series/1
GPIB
adapter
implements
the
following
interface
function
standards
of
IEEE
Standard
488:
Cl
GPIB
adapter
is
the
only
allowed
system
controller,
and
it
provides
the
control
for
the
generation
of
the
interface
clear
(IFC)
and
the
remote
enable
(REN)
interface
messages.
C2
This
interface
function
allows
the
GPIB
adapter
to
generate
the
iriterface
clear
(IFC)
message.
C3
This
interface
function
allows
the
GPIB
adapter
to
generate
the
remote
enable
(REN)
message.
C4
This
interface
function
allows
the
GPIB
adapter
to
respond
to
service
requests
(SRQs)
generated
by
the
devices
attached
to
the
interface
bus.
The
GPIB
adapter
responds
synchronously
to
an
active
service
request
(SRQ)
and
generates
an
attention
interrupt
to
the
processor,
if
the
adapter
is
not
busy.
C25
This
interface
function
allows
the
GPIB
adapter
to
send
interface
messages,
conduct
parallel
polls,
conduct
serial
polls,
and
take
control
synchronously.
As
the
controller
in
charge,
it
cannot
receive
control
from,
or
pass
control
to,
another
device
or
itself.
Interface
functions
are
implemented
as
follows:
SHI
Source
handshake
interface
function,
in
combination
with
AH1,
is
used
to
control
the
initiation,
transmission,
and
termination
of
multiline
messages.
AH1
Acceptor
handshake
interface
function,
in
combination
with
SH1,
is
used
to
control
the
initiation,
reception,
and
termination
of
multiline
messages.
With
the
SH1
function,
the
AH1
function
guarantees
an
asynchronous
transfer
of
each
message
byte
between
a
single
sending
device
and
one
or
more
receiving
devices.
T8
Talker
interface
function
is
capable
of
sending
configuration
and
programming
information
to
devices
on
the
interface.
This
function
restricts
the
GPIB
adapter
from
responding
to
a
serial
poll
or
being
configured
in
the
talk-only
mode.
L4
Listener
interface
function
is
capable
of
receiving
device-dependent
data,
such
as
multiline
messages
from
other
devices.
The
GPIB
adapter
inhibits
configuration
in
the
listen-only
mode.
SRQ
Service
request
interface
function
inhibits
the
GPIB
adapter
from
generating
a
service
request
interface
message.
General
Purpose
Interface
Bus
Adapter
(RPQ
D02118)
A-5

Table of Contents

Related product manuals