Spectrum Controls 1769sc-HART Modules - Manual (Page 94)

User’s Man
7-28
Section
Module
Comma
Compac
nual 0300217-
n 7.4
Specific
ands
ct IO™ Isolate
03 Rev. A
The HART o
include the H
information.
Since some m
module 40 b
The module
7-8 using a J
the message
and stored in
figure below
Figure 7-9 (
The tables o
7.4.1 Get
The Get HAR
information
Table 7-11.
information
Get HART D
RAM and no
Table 7-9 (G
HART Get D
Get currently
Field
HART Chann
Number
Command Nu
Input Par: M
Input Par: M
Return Par: M
Return Par: M
ed HART Anal
output module
HART pass-thr
. The comman
messages can b
bytes at a time u
specific comm
JSR instruction
to the module
n a temporary a
w.
(Message Flow
n the following
HART Dev
RT Device Info
for the connec
The informati
gathered from
Device Informa
ot directly from
Get HART De
Device Informat
cached Device I
Va
nel 0x
umber 0x
Message Size
Message Body (i.e.
Message Done
Message Response
JSR
log Output Mo
uses module s
rough, HART s
nds are passed t
be as long as 2
using the pagin
mand and accom
n with paramet
. The response
array where it c
w)
g pages show t
vice Informa
ormation comm
cted HART dev
on that is gathe
the auto-acqui
ation command
m the field devi
evice Informat
tion – command
Information for a
alue
x00 – 0x03 (1 by
x03 (1 byte)
Device Specific C
e (i.e. Temp Array
odule
specific comma
suspend and re
to the module u
257 bytes, the d
ng scheme des
mpanying data
ters. When the
e data, if any, i
can be used wi
the format for e
ation
mand is used to
vice. The data
ered by this co
isition process
d pulls the data
ice.
tion Comman
d message pack
a given channel.
yte)
Command)
y)
ands. Module
esume, and get
using the input
data is transpor
cribed in the p
a is passed to th
e routine is exe
is also converte
ithin the ladder
each module sp
o gather the dev
that is retrieve
ommand is sim
s. The key diff
a that has been
nd)
ket structure
.
R
F
specific comm
t HART device
t and output im
rted to and from
previous section
he routine in Fi
ecuted it will se
ed by this rout
r program. See
pecific comma
vice specific
ed can be seen
milar to the
ference is that t
stored in the m
Definition
Module input
channel number
HART comman
The command
number to obtai
HART device
information
Routine
Fig 7.9
mands
e
mage.
m the
n.
igure
end
ine
e
and.
in
the
module
r for
nd
in