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.
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.
Need help?
If the value is not correct:
•
Ensure that the external device and the meter are using the same measurement unit.
•
For polling:
—
Verify the wiring between the meter and the external device.
—
Verify the HART tag of the external device.
•
For digital communications:
—
Verify that the host has access to the required data.
—
Verify that the host is writing to the correct register in memory, using the correct data type.
Configuration and Use Manual
Configure process measurement applications
MMI-20048166
April 2019
Configuration and Use Manual
47