Connect to a 4-wire HART transmitterFigure 3-15:
If you have a 250 Ohm resistor, you can insert it in between the device terminals and connect the lead set
across the resistor. Otherwise, you can enable the internal resistor in the device connection wizard.
Note
Ensure you review the device documentation for connecting/setting up HART communication. Devices
may have different terminals or requirements.
A. Voltage source
Device connection wizard prompts Answer
Do you intend to provide power from the
Trex unit?
No
Leads are attached to: Transmitter
Change Polling Option? Tap Yes if the device is not at address zero.
Increase loop resistance? Tap Yes if there is no external resistor between the
device terminals.
Power and connect to a HART positionerFigure 3-16:
Field Communicator application
User Guide 67
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