42
Phone:(910)
392
‐
2490
Fax:
(910)
392
‐
2123
416
Landmark
Drive
Wilmington,
NC
28412
www.easterninstruments.com
Data
Received
by
PLC
from
HMI
(Optional)
There
are
10
input
tags,
I.Data[0]
‐
I.Data[9].
As
shown
in
the
diagram
above,
Rate
is
mapped
to
I.Data[0],
Total
is
mapped
to
I.Data[1],
Zero
Readback
is
mapped
to
I.Data[2],
Product
is
mapped
to
I.Data[3],
Remote
Alarm
is
mapped
to
I.Data[4],
the
meter’s
current
temperature
is
mapped
to
I.Data[5],
the
Integrated
Control
Valve’s
Position
in
Percent
is
mapped
to
I.Data[6],
the
Set
Point
for
the
read
back
register
(in
Percent)
is
mapped
to
I.Data[7],
the
Set
Point
for
the
read
back
register
for
Set
Point
(In
Engineering
Units)
is
mapped
to
I.Data[8]
and
the
Status
(i.e.
PLC
enable,
Manual/Auto
Mode,
Start/Stop,
Percent/Engineering
Units,
Valve
Stuck)
is
mapped
to
I.Data[9].
Commands
Transmitted
by
the
PLC
to
HMI
(Optional)
There
are
9
output
tags,
O.Data[0]
‐
O.Data[6].
As
shown
in
the
diagram
above
Remote
Reset
(Resets
the
total)
is
mapped
to
O.Data[0],
Remote
Zero
(Resets
the
Zero)
is
mapped
to
O.Data
[1],
Remote
Multiple
Calibration
is
mapped
to
O.Data[2],
Remote
Dynamic
Calibration
is
mapped
to
O.Data[3],
Remote
Alarm
Target
(lets
you
remotely
set
the
alarm’s
target)
is
mapped
to
O.Data[4],
Start/Stop,
or
process
on/off
is
mapped
to
O.Data[5],
Set
Point
is
mapped
to
O.Data[6],
Selection
of
Manual/Auto
Mode
is
mapped
to
O.Data[7]
and
a
clean
ICV
feature
is
mapped
to
O.Data[6].
Please
note
the
units
as
expressed
in
“Status”
bit
I.Data
[5].
Tag
Mapping
Data
Sent
To
the
PLC
Commands
Sent
from
the
PLC
Rate
Totalization
Zero
Readback
Product
Remote
Alarm
Current
Temp.
Valve
Position
Setpoint
%
Setpoint
ENG
Status
Remote
Reset
Remote
Zero
Remote
mCal
Remote
dCal
Remote
Alarm
Start/Stop
Valve
PID#1
Setpoint
Manual/Auto
Select
Clean
ICV
