Primary Variable (Pv); Analog Output (Ao); Lower Range Value (Lrv); Upper Range Value (Urv) - Emerson 375 User Manual

3-18
Primary
Variable (PV)
Analog Output
(AO)
Lower Range
Value (LRV)
Upper Range
Value (URV)
VIEWING THE
UTILITY MENU
Configuring
the HART
application
The Online menu displays critical process
information that is continuously updated. If the
primary variable and related engineering units are
too long, they will not appear on the Online menu.
Double-tap PV to view when the primary variable
and the related engineering units truncated on the
Online menu.
The analog output is the signal on the 4–20 mA
scale that corresponds to the primary variable.
This is a digital value sent from the field device.
Double-tap PV AO to view when the analog output
and its related engineering units are truncated on
the Online menu.
Double-tap PV LRV to view when the lower range
value and its related engineering units are
truncated on the Online menu.
Double-tap PV URV to view when the upper range
value and its related engineering units are
truncated on the Online menu.
The Utility menu allows you to set the polling
option, change the number of ignored status
messages, view the available Device Descriptions,
perform a simulation, and view HART diagnostics.

Changing the HART polling option

Use the HART polling option to configure your 375
Field Communicator to automatically search for all
or specific connected devices. Most HART device
installations contain one device per loop and the
device address equals zero.
To have more than one device per loop, wire the
devices in parallel and placed into "Multidrop"
mode. This mode is enabled by changing the
address from zero to any address between
1 — 15. After the mode is enabled, the analog
HART Functionality