Emerson Rosemount 644 Reference Manual page 45

Reference Manual
00809-0200-4728
test terminals on the terminal block, or shunting transmitter power through the meter at
some point in the loop.
Perform a loop test using a Field Communicator
From the HOME screen, enter the Fast Key sequence.
Device Dashboard Fast Keys
Perform a loop test using AMS Device Manager
Procedure
1. Right click on the device and select Service Tools.
2. In the left navigation pane select Simulate.
3. On the Simulate Tab find the Perform Loop Test button in the Analog Output
4. Follow the guided instructions and select Apply when complete.
Perform a loop test using LOI
Reference the
Figure 2-21: Performing a Loop Test with the LOI
VIEW CONFIG
SENSOR CONFIG
UNITS
RERANGE
LOOP TEST
DISPLAY
EXTENDED MENU
EXIT MENU
2.11.2 Simulate digital signal (digital loop test)
The simulate digital signal function adds to the analog loop test by confirming the HART
output values are outputting correctly. Digital loop test is only available in HART Revision 7
mode.
Simulate a digital signal using a Field Communicator
From the HOME screen, enter the Fast Key sequence.
Device Dashboard Fast Keys
Emerson.com/Rosemount
Verification group box.
Figure 2-21 to find the path to the loop test in the LOI menu.
3, 5, 1
SET 4 MA
SET 20 MA
SET CUSTOM
END LOOP TEST
BACK TO MENU
EXIT MENU
3, 5, 2
Configuration
March 2021
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