Emerson Bristol ControlWave Express Manual de usuario descargar pdf (Pagina 8)

Product Data Document

420DS-3d

July 16, 2007 - Page 8

Bristol

ControlWave

Designer

Remote Automation Solutions

Website: www.EmersonProcess.com/Remote

ACCOL III Function Blocks

Function Block

Name

Description

AGA 3, AGA3DENS,

AGA3I, AGA3TERM,

AGA5, AGA7, AGA-

8DETAIL, AGA-

8GROSS

Natural gas ow calculations for orice and turbine measurement complicant with

the appropriate American Gas Association specications.

ALARM

Analog, logical and change of state alarm detection and reporting.

ANOUT

Provides anit-reset windup track and reset feedback to PID controller.

ARCHIVE

Allows variables to be time-stamped and stored in historical Archive les as raw or

pre-calculated values

AUDIT

Provides a history of signicant events for selected process variables and alarm

variables

AUTOADJUST

Performs adjusted volume calculations and self-check calculations for an Invensys

(Equimeter) Auto-adjust Turbine Meter

AVERAGER

Computes the time-average and integral of an analog or logical input.

CLIENT/SERVER

Provides peer-to-peer and master/slave communication between ControlWave

nodes

COMMAND

Provides a exible startup control for a wide range of equipment such as motors,

valves or pumps. This Function Block initiates a programmable delay period be-

tween an input and output change

COMPARATOR

Compares two analog inputs to determine selection of an output.

CRC Allows the user to calculate a Cyclic Redundancy Code (CRC) for a given data ar-

ray of type USINT. Used to provide CRC checking with the Generic Serial Protocol

Function Block.

CUSTOM Allows the user to congure an Emerson controller to communicate with other

manufacturer’s programmable logic controllers and networks.

DACCUMULATOR Allows certain arithmetic operations to be performed on double-precision oating

point numbers.

DB_LOAD Loads variable information from text les. These les are created in the resource

directory of the application and downloaded automatically as part of the project.

DB_LOAD supports large variable lists and minimizes memory requirements.

DEMUX Performs a demultiplex operation by sending an input value to a selected location in

an output list.

DIAL_CTRL Allows establishing a communication link between two compatible modems on the

public telephone system network. At present only the external modems are sup-

ported.The Modem interface is independent and not part of any communication pro-

tocol. This allows the DIAL_CTRL FB to perform dialing / modem setup operations

independent of the underlying communication protocol, BSAP, Custom, Generic Se-

rial, etc., at the target port. Application has full control over the dial/hang-up and/or

modem setup functions.

1 2 3 4 5 6 7 8 9 10

ControlWave 1
Designer 1

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