A1.5 parameters of os block, A1.5, A-11 – Yokogawa YVP110 User Manual

Page 122

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<Appendix 1. Function Block Parameters>

A-11

IM 21B04C01-01E

A1.5 Parameters of OS Block

Relative

Index

Index

Parameter Name

Default

(factory setting)

Write

Description

0

14000

Block Header

Block tag

= O/S

Information about this block, including the block

tag, DD revision, execution time.

1

14001

ST_REV

0

Incremented when a change in made to the

parameter settings for the OS block to indicate

the revision level of the settings, and used to see

whether or not there is a change in parameter

settings

2

14002

TAG_DESC

Spaces

Universal parameter storing the description of the

tag.

3

14003

STRATEGY

1

Universal parameter used by an upper-level

system to classify the function blocks.

4

14004

ALERT_KEY

1

Universal parameter used as a key to identify

the point from which an alert is issued; normally

used by an upper-level system to select alerts

to provide to a particular operator who covers a

specific area of the plant.

5

14005

MODE_BLK

O/S

Universal parameter that indicates the block

operation conditions and is composed of actual

mode, target mode, permitted modes, and normal

mode.

6

14006

BLOCK_ERR

Indicates the error statuses related to the block

itself

7

14007

SP

Auto

Indicates the setpoint for the block.

8

14008

OUT_1

O/S

Indicates the value and status of output 1.

9

14009

OUT_2

O/S

Indicates the value and status of output 2.

10

14010

OUT_1_RANGE

0-100%

Defines the range of OUT_1 (output 1).

11

14011

OUT_2_RANGE

0-100%

Defines the range of OUT_2 (output 2).

12

14012

GRANT_DENY

0

Option to control access from the host computer

and local control panel to tuning and alarm

parameters.

13

14013

STATUS_OPTS

0

O/S

Defines block actions depending on block status

conditions.

14

14014

CAS_IN

Cascade input.

15

14015

BKCAL_OUT

Value returned to BLCAL_IN of the upstream

block; used by the upstream block to prevent

reset windup and perform bumpless transfer to

closed-loop control.

16

14016

IN_ARRAY

(0, 0, 0, 0)

O/S

Settings used to convert SP to OUT_1

17

14017

OUT_ARRAY

(0, 0, 0, 0)

O/S

Settings used to convert SP to OUT_2

18

14018

LOCKVAL

2

Defines the value of OUT_1 outside the set

endpoints of operation characteristic. 2 = Lock

19

14019

BKCAL_IN_1

Read-back value of OUT_1 returned from the

downstream block.

20

14020

BKCAL_IN_2

Read-back value of OUT_2 returned from the

downstream block.

21

14021

BAL_TIME

0

Defines the balancing time. After the cascade

connection to one downstream block has already

been established, the cascade connection to the

other downstream block will be established over

the time period defined by this parameter.

22

14022

HYSTVAL

0

Defines the hysteresis for LOCKVAL. When it is

set to ‘No Lock.’

23

14023

UPDATE_EVT

Shows the contents of an update event (a change

to the setpoint) upon occurrence.

24

14024

BLOCK_ALM

Shows the contents of a block alarm upon

occurrence.

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