Motorola DH6200 Specifications download pdf (Page 63)

2-51Master Glossary of Terms and Symbols

TR4.0:PROVOXRevision A — April 1997

hardcoded

A type of intelligent sensor function

sequence table (FST) for a PROVOXr

system. All types of exported intelligent

sensors except parameterized FSTs are

hardcoded. Hardcoded means that the

scaling factors, limits, and weights are

unchangeable constants in the program.

The only way to change one of these

constants is to overwrite the p rogram with

another version of the program.

hard disk

A magnetic storage medium with a large

data storage capacity (as compared to

diskettes) on platters housed

permanently within the drive.

hardkey

A named keyboard key used to enter

information or to access, select, or

perform a specific function. An

explanation of the hardkey’s acronym or

function immediately follows the first

reference to it in the text. Hardkeys

usually are referred to simply as keys, but

occasionally as buttons.

hard manual mode (HMAN)

A special control mode associated with

controller backup: in some PROVOXr

systems, if a controller fails, additional

hardware lets the operator retain manual

mode control of the loop output.

HART

Acronym: Highway Addressable Remote

Transducer

HART_CHANNEL utility

The CHIP HART CHANNEL utility allows

the user to disable and re-enable digital

communication originated by a Type

CL6826 Smart Device Output Card

channel.

Currently, this utility needs to be used

only when specific FIELDVUE

ValveLinkt software off-line diagnostics

are being run on a PC connected at the

termination panel or to the FIELDVUE

valve itself.

HART Communication Foundation

The organization that establishes goals,

sets policies, and acts as the official

source of information worldwide

regarding HART communication

technology.

HART communicator

The Fisher-Rosemount Systems Model

275 HART Communicator is the

hand-held interface that provides a

common communication link to all HART

protocol-compatible,

microprocessor-based devices.

HCF

Acronym: HART Communication

Foundation

HDF

Acronym: Historical Data File

HDL

Acronym: Highway Data Link

HDLC

Acronym: High-Level Data Link Control

header

Information about the purpose, source

and version of the recipe such as recipe

and product identification, originator,

issue date, and so forth.

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