Hach-Lange SI792 D, SI792x D, SI792x D-FF, SI792x D-PA User Manual - Manual (Page 57)

Operation—Foundation Fieldbus
55
6.
2.
3
Trans
duc
er block
The tr
ansducer block pr
ovides fo
r acyclic dat
a transmission
. Ca
libr
ation
, conf
igur
atio
n, and
main
tenance comm
ands coming fro
m
the control
st
atio
n are pr
oce
ssed in the T
ransducer
Block.
T
he bus p
a
rameter
s for the tr
ansdu
cer
block (T
B) are shown in
T
able 19
(de
fault valu
es
are in bold type).
Tab
le 19 T
rans
duc
er
b
lock
bus
p
aram
eters
P
a
ra
me
ter
Des
c
ription
R/W
Byt
e
s
Da
ta
type
Range
ST_REV
The
re
vi
si
on of t
he st
at
ic
da
ta
as
sociat
ed
wit
h
th
e f
un
ct
ion
bl
ock.
Use
d
by
the host
t
o
dete
rmine when
t
o re-r
ead t
he
st
at
ic
d
a
ta.
R2
T
h
e
re
vi
si
on
va
lue i
s
in
cr
ement
ed ever
y
time a st
at
ic
par
amet
er in th
e
bl
ock is ch
ange
d.
TA
G
-D
E
S
C
The
u
se
r d
escr
ipt
ion
of
t
he
inte
nded
ap
plicat
ion
of
t
he
bl
o
ck
.
R/W
3
2
D
e
fa
u
lt:
T
e
x
t
STRA
TEGY
The
st
rat
egy fie
ld ca
n
be used
to
id
ent
ify a
group
ing o
f bl
ocks.
Can
b
e u
se
d
for
an
y
pu
rpose
by
the user
.
R/W
2
D
e
fa
u
lt:
0
ALE
R
T_KEY
Iden
tif
icat
ion nu
mber th
at
may
be us
ed
by the
host syst
em
to
sor
t alar
ms and
o
the
r
de
vice
info
rmat
ion.
R/W
1
D
e
fa
u
lt:
0