Method
Description
Setup
Polling
The meter polls an external
device for pressure data.
a. Choose
Menu
>
Configuration
>
Process Measurement
>
Pressure
>
External Pressure
.
b. Set
External Pressure
to On.
c. Choose
Poll External Device
.
d. Select
Polled Variable 1
or
Polled Variable 2
.
e. Set
Variable
to External Pressure.
f. Set
Polling Control
to Poll as Primary or Poll as Secondary.
Option
Description
Poll as Primary
No other HART masters will be on the
network. The Field Communicator is
not a HART master.
Poll as Secondary Other HART masters will be on the
network. The Field Communicator is
not a HART master.
g. Set
External Device Tag
to the HART tag of the external
pressure device.
mA Input
An external device sends
pressure data to the meter via
the mA Input.
a. Choose
Menu
>
Configuration
>
Process Measurement
>
Pressure
>
External Pressure
.
b. Set
External Pressure
to On.
c. Choose
Menu
>
Configuration
>
Inputs/Outputs
>
Channel
D
.
d. Set
I/O Type
to MAI.
e. Set
Power
appropriately.
f. Choose
I/O Settings
.
g. Set
Assignment
to External Pressure.
h. Set
Lower Range Value
and
Upper Range Value
appropriately.
Digital
communications
A host writes pressure data to
the meter at appropriate
intervals.
a. Choose
Menu
>
Configuration
>
Process Measurement
>
Pressure
>
External Pressure
.
b. Set
External Pressure
to On.
c. Perform the necessary host programming and
communications setup to write pressure data to the
transmitter at appropriate intervals.
Postrequisites
Choose
Menu
>
Service Tools
>
Service Data
>
View Process Variables
and verify the values for External
Temperature and External Pressure.
Configuration and Use Manual
Configure process measurement applications
MMI-20025166
March 2019
Configuration and Use Manual
57