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Chapter 10
Configuring HART Devices
The process for identifying and using HART connected instruments are as follows:
• Connecting the HART instrument to 2920 FTT using the I.S. HART terminal board as
explained in “HART Junction Box”, or to the Ex d HART terminals in the main junction
box
• Searching for the HART instrument
• Configuring the HART instrument for the 2920 FTT
HART instruments can be used as level or temperature data acquisition devices and when
connected to the 2920 FTT can display the data from the HART instrument on the LCD.
After the HART instrument is connected to the 2920 FTT, you need to search for the
instrument.
Note All these parameters are located in the HART Master menu. The procedure below
details the steps to search for a HART instrument but can be used to set other HART Master
parameters by substituting the appropriate parameter name for Searching. Of course, the
number of times you press Minus or Plus to access a parameter will be different.
Searching for a HART Instrument
1. Press Enter to open the Main Menu.
2. Press Minus multiple times to select the HART Master menu.
3. Press Enter to open the HART Master menu.
4. Press Minus 2 times to select the Commands menu.
5. Press Enter to open the Commands menu.
6. Press Enter to open the Scan Cmd.
7. Press Minus 2 times to select Search.
8. Press Enter to begin searching for a HART instrument. When the search is complete, the
display changes to Enable.
9. Continue to verify communications with the HART instrument.
Verifying Communications with the HART Instrument
1. Follow steps 1 through 3 above to open the HART Master menu.
2. Press Minus one time to open the Display Only menu.
3. Press Minus to locate Num Inst List. The number displayed below Num Inst List is the num-
ber of HART instruments connected to the 2920 FTT. The number can be between 1 and 5.
A 0 (zero) indicates no HART instruments are connected.
Next, you can verify the type of instrument connected. With this release, only
temperature devices, RADAR devices, or generic HART devices are supported with the
2920 FTT.
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