l improve support for multi-variable and valve / actuator type devices;
l enhance status and diagnostics,
l increase interoperability;
l extended commissioning / troubleshooting capabilities; and
l security measures to confirm any configuration change.
HART 6.0 and later version device functionality that is supported Series C through Control Builder
includes the following:
Function Description
Device
variable
classification
Provides master applications with a simple mechanism to determine the number
and type of process related variables (pressure, temperature, etc.) within a device.
Extended
device status
Provides additional device status alerts such as 'Device Needs Maintenance.'
Device
variable
status
Enables field devices to self-validate and report on the quality of the data in the
command response (good, poor, bad, fixed).
Long Tag New Long Tag with international (ISO Latin 1) characters allows consistent
implementation of the longer tag names required by many industry users. The
specifications currently reflect the length of this tag to be 32 characters.
Configuration
change
counter
Improved mechanism for master applications to determine that a field device
configuration has been changed. Protects integrity of plant configuration
databases.
Device
Families
Establishes standard commands and status indicators for devices based on the
type of process measurement. Initial Device Families include Temperature and PID
Control.
Transducer
Trim
Commands
New Common Practice commands for performing transducer trim (calibration)
operations.
Sub-Devices Simple mechanism using Common Practice Commands to support 'HART device
within a HART device' functionality. Potential uses include flow computers and
multi-channel temperature devices.
Block Data
Transfer
An updated mechanism to support the movement of large blocks of data, such as
device configuration information, between masters and field devices.
Catch Device
Variable
Simple mechanism to support the sharing of process data between field devices on
the same HART network. Allows a listening field device to capture process data
from another field device to be used in calculations such as tank gauging, flow
computers or PID control functions.
Write Device
Variable
New Command to support forcing the digital value for any Device Variable to a
specific value to aid in commissioning and troubleshooting.
Lock Device New Commands to allow a master application to lock the 'local' front panel of a field
device while performing remote configuration functions.
Squawk and
Find Device
New commands to support commissioning and troubleshooting of HART devices in
multi-drop and multi-pair cable installations.
Series C I/O IOMs do not have an independent HART device block. Instead, the HART data is fully
contained within an AI or AO block and:
l enabled when HENABLE parameter is set to TRUE (This is done on the AI channel block HART
Configuration tab)
l becomes an Experion 'tagged' entity and can generate alarms based on its 'tagged' name in
Station.
