A1.8 parameters of ar block, A1.8, A-16 – Yokogawa YVP110 User Manual

Page 127

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<Appendix 1. Function Block Parameters>

A-16

IM 21B04C01-01E

A1.8 Parameters of AR Block

Relative

Index Index

Parameter

Name

Valid

Range

Default

(factory

setting)

Write

Description

0

17500 BLOCK_

HEADER

TAG: “AR” O/S Information relating to this function block, such as block

tag, DD revision, and execution time.

1

17501 ST_REV

0

Indicates the revision level of the set parameters

associated with the AR block. If a setting is modified,

this revision is updated. It is used to check for parameter

changes, etc.

2

17502 TAG_DESC

Null

A universal parameter that stores comments describing

tag information

3

17503 STRATEGY

1

A universal parameter intended for use by the high-level

system to identify function blocks.

4

17504 ALERT_

KEY

1-255

1

Key information used to identify the location where an

alert has occurred. Generally, this parameter is used

by the high-level system to identify specific areas in a

plant that are under the control of specific operators,

to distinguish necessary alarms only. This is one of the

universal parameters.

5

17505 MODE_BLK

AUTO

A universal parameter representing the operation status

of the AR block. It consists of the actual, target, permit,

and normal modes.

6

17506 BLOCK_

ERR

0

Indicates the error status relating to the AR function

block. The bit used by this function block is as follows;

Bit 1: Block Configuration Error

Bit 15: O/S mode

7

17507 PV

0

The result of a range extension function is substituted

into this.

When viewed from the computing equation, PV is the

main input.

8

17508 OUT

0

MAN Block output

9

17509 PRE_OUT

0

Always indicates the calculation result. The value is

substituted into OUT in auto mode.

10

17510 PV_SCALE

O/S Indicates PV scaling (for making a memo).

11

17511 OUT_

RANGE

Output scaling for the host (for making a memo).

12

17512 GRANT_

DENY

0

The parameter used to check if various operations

have been executed. The bits in the GRANT parameter

corresponding to various operations are set before any

of them are executed. After the operations are complete,

the DENY parameter is checked to find out if any bit

corresponding to the relevant operation has been set. If

no bit is set, it is evident that the operations have been

executed successfully.

13

17513 INPUT_

OPTS

0

Determines whether an input is used as a “good” input

when the input status is “bad” or “uncertain.”

Bit

Function

0 Handles IN as “good” input if its status is

“uncertain.”

1 Handles IN_LO as “good” input if its status is

“uncertain.”

2 Handles IN_1 as “good” input if its status is

“uncertain.”

3 Handles IN_1 as “good” input if its status is “bad.”
4 Handles IN_2 as “good” input if its status is

“uncertain.”

5 Handles IN_2 as “good” input if its status is “bad.”
6 Handles IN_3 as “good” input if its status is

“uncertain.”

7 Handles IN_3 as “good” input if its status is “bad.”

8 to

15

Reserved

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