Emerson Micro Motion 5700 Configuration And Use Manual page 59

Configuration and Use Manual
MMI-20039472
Procedure
1. Choose Device Tools → Configuration → Process Measurement → API Referral.
2. Choose the method to be used to supply temperature data, and perform the required setup.
Option Description
Polling The meter polls an external
device for temperature data.
This data will be available in
addition to the internal RTD
temperature data.
Digital A host writes temperature data
communications to the meter at appropriate
intervals. This data will be
available in addition to the
internal RTD temperature data.
Postrequisites
If you are using external temperature data, verify the external temperature value displayed in the Inputs
group on the ProLink III main window.
The current pressure value is displayed in the External Pressure field. Verify that the value is correct.
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
Setup
a. Set Line Temperature Source to Poll for External Value.
b. Set Polling Slot to an available slot.
c. 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.
d. Set External Device Tag to the HART tag of the
temperature device.
e. Click Apply.
a. Set Line Temperature Source to Fixed Value or Digital
Communications.
b. Click Apply.
c. Perform the necessary host programming and
communications setup to write temperature data to the
meter at appropriate intervals.
June 2019
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