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Section
9
LTM-350 has HART Protocol
9.0 Hart Protocol: General Information
The LTM-350 is a HART registered and certified instrument. The section presents how the HART Communication
Protocol has been utilized in the LTM-350. This section does not explain what HART Protocol is, please visit
www.hartcomm2.org
to learn about HART.
The following is a flow chart of our HART menu structure. This flow chart can be utilized to access desired
parameters and operations when using a handheld communicator or a HART enabled host system.
HART Menu Flowchart for LTM350 Transmitter
Device
Setup>>>> >
Process
Variables>> > Level
PV Value (Note
1) Interface (Note 2 )
Loop Current Temper (Note 3)
LRV %Range
URV Loop Current
Diag/Service>>>>>
>> > Loop Test
Diagnostics>>>>>>>
>> > Device Status
Operation Status
Calibration Status
Level Alarm Status
Calibration>>>>>>>>
>> > D/A trim
Full Level trim
Full Temp trim (Note 3)
Calibration
Review>>>>>>>>>>> > Level Gain
Lvl UTP Value
Live
Measurements>>> > Level Pulse Sensor UTP Value
Interface Pulse (Note 4) Lvl LTP Value
Tic Limit Sensor LTP Value
Raw Temper A/D (Note 4)
Temperature Gain
(Note 3)
Temperature Offset
(Note 3)
RTD UTP Value
(Note 3)
A/D UTP Value (Note 3)
RTD LTP Value (Note 3)
A/D LTP Value (Note 3)
DAC Zero
DAC Full
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