Emerson Micro Motion 1700 Configuration And Use Manual page 101

Configure HART variables (PV, SV, TV, QV)
Display
ProLink III
Field Communicator Configure > Manual Setup > Inputs/Outputs > Variable Mapping
Overview
The HART variables are a set of four variables predefined for HART use. The HART variables
include the Primary Variable (PV), Secondary Variable (SV), Tertiary Variable (TV), and
Quaternary Variable (QV). You can assign specific process variables to the HART variables,
and then use standard HART methods to read or broadcast the assigned process data.
Restriction
The TV is automatically set to match the PV and cannot be configured independently.
Tip
The Tertiary Variable and Quaternary Variable are also called the Third Variable (TV) and Fourth
Variable (FV).
Options for HART variables
Table 6-6: Standard HART process variables
Process variable
Gas Standard Volume Flow Rate
Gas Standard Volume Inventory
Gas Standard Volume Total
Line (Gross) Volume Flow Rate
Line (Gross) Volume Inventory
Line (Gross) Volume Total
Mass Flow Rate
Mass Inventory
Mass Total
Configuration and Use Manual
• If you set Burst Mode Output to send four user-specified variables, set the four
process variables to be sent in each burst.
• If you set Burst Mode Output to any other option, ensure that the HART variables
are set as desired.
Not available
Device Tools > Configuration > Communications > Communications (HART)
Primary Varia-
ble (PV)
✓
✓
✓
Integrate the meter with the control system
Secondary Third Variable
Variable (SV) (TV)
✓ ✓
✓ ✓
✓ ✓
Fourth Varia-
ble (QV )
✓
✓
✓
✓
✓
✓
✓
✓
✓
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