Generating A Non-Tx5 Secondary Station - Texas Instruments 990 User Manual
Dx10 hdlc communications package
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Constr uction and Acti vation
Enter
the
number
of
transmission
attempts
to be made to any
secondary on this line before the next attempt is aoorted.
Note
that
if
2
is
entered
(as
in
the
example) ,
a
total
of 2
transmission attempts
will
be
made
to
the
secondary
before
aoorting.
An
attempt
is judged unsuccessful if no response is
received within the time-out period of two seconds.
The preceding responses and prompts describe
an
FCCC
port
and
line
to
NETGEN.
After
receiving
a
response
to
the prompt
MESSAGE TRANSMIT RETRIES,
NETGEN
continues
with
prompts
that
request
descriptive information for the first secondary station.
The following paragraphs assume that
the
first
station
to
be
described
is
not a TX5.
An example describing a TX5 station is
provi ded 1 at er •
3.3.3.1
Generating a Non-TX5 Secondary Station.
The generation of a non-TX5 secondary station requi res the
entry
of
the
following
information
in
response
to the appropriate
prompts:
*
Station drop address
*
Maximum time requi red between polls
*
Station networ
k
address
*
Maximum message si ze
*
Type of station (PM550 or TM990)
The following prompts describe
(to NETGEN)
a
non-TX5
secondary
station
attached to the FCCC line just defined.
A maximum of 32
secondary stations can be attached to each FCCC line.
The
first
prompt is as follows:
STATICN DROP ADDRESS (0 - >3F, CR TO CONTINUE):
62
The
response to this prompt (62 in the example) is the secondary
station drop address
as
set
on
the
pencil
swi tches
on
its
communication controller card.
The response must
be
a val ue of 0
through
63
decimal (0 through >3 F) •
(A RETURN response (CR) to
this prompt does not resul t in the generation of more prompts for
the current FCCC line.
Instead, prompts for the next
FCCC
line
are gi ven.)
The ne xt prompt is as follows:
MAX TIME BETWEEN POLLS (0-32000/1
=
250 MSEC):
8
The
response
to this prompt is the number
(8
in the example) of
250-millisecond interval s of time sel ected
as
a
del ay
between
polls to this secondary station.
The example response results in
a
delay of two seconds between polls.
A
response of 0 indicates
that
this
secondary
station
should
be
polled
at
every
3-10
2270526-9701
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