Yokogawa EJA115 User Manual

Page 42

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IM 01C22T02-01E

A-4

APPENDIX 1. LIST OF PARAMETERS FOR EACH BLOCK OF THE EJA

19

4019

4119

FIELD_VAL

TA0102-2.EPS

20

4020

4120

UPDATE_EVT

Raw value of the field device in percent of thePV
range, with a status reflecting the Transducer
condition, before signal characterization (L_TYPE)
or filtering (PV_FTIME).

21

4021

4121

BLOCK_ALM

The block alarm is used for all configuration,
hardware, connection failure or system problems in
the block. The cause of the alert is entered in the
subcode field. The first alert to become active will
set the Active status in the Status attribute. As soon
as the Unreported status is cleared by the alert
reporting task, another block alert may be reported
without clearing the Active status, if the subcode
has changed.

22

4022

4122

Enable

ALARM_SUM

The current alert status, unacknowledged states,
unreported states, and disabled states of the alarms
associated with the function block.

23

4023

4123

0xFFFF

ACK_OPTION

Selection of whether alarms associated with the
block will be automatically acknowledged.

AUTO

24

4024

4124

0.5%

ALARM_HYS

Amount the PV must return within the alarm limits
before the alarm condition clears. Alarm Hysteresis
is expressed as a percent of the PV span.

AUTO

AUTO

25

4025

4125

0

HI_HI_PRI

Priority of the high high alarm.

AUTO

26

4026

4126

+INF

HI_HI_LIM

The setting for high high alarm in engineering units.

AUTO

27

4027

4127

0

HI_PRI

Priority of the high alarm.

AUTO

28

4028

4128

+INF

HI_LIM

The setting for high alarm in engineering units.

AUTO

29

4029

4129

0

LO_PRI

Priority of the low alarm.

AUTO

30

4030

4130

–INF

LO_LIM

The setting for the low alarm in engineering units.

AUTO

31

4031

4131

0

LO_LO_PRI

Priority of the low low alarm.

AUTO

32

4032

4132

–INF

LO_LO_LIM

The setting of the low low alarm in engineering units.

33

4033

4133

HI_HI_ALM

The status for high high alarm and its associated time stamp.

34

4034

4134

HI_ALM

The status for high alarm and its associated time stamp.

35

4035

4135

LO_ALM

The status of the low alarm and its associated time stamp.

36

4036

4136

LO_LO_ALM

The status of the low low alarm and its associated
time stamp.

This alert is generated by any change to the static data.

17

4017

4117

Linear: 0%
Square root: 10%

LOW_CUT

Limit used in square root processing. A value of
zero percent of scale is used in block processing if
the transducer value falls below this limit, in % of
scale. This feature may be used to eliminate noise
near zero for a flow sensor.

AUTO

18

4018

4118

2sec

PV_FTIME

Time constant of a single exponential filter for the
PV, in seconds.

AUTO

Relative

Index

Index

AI1

Explanation

Write Mode

Factory Default

Parameter Name

Index

AI2

14

4014

4114

0

STATUS_OPTS

Options which the user may select in the block
processing of status

O/S

15

4015

4115

AI1: 1
AI2: 2

CHANNEL

The number of the logical hardware channel that is
connected to this I/O block. This information
defines the transducer to be used going to or from
the physical world.

O/S

16

4016

4116

Specified at the
time of order

L_TYPE

Determines if the values passed by the transducer
block to the AI block may be used directly (Direct)
or if the value is in different units and must be
converted linearly (Indirect), or with square root (Ind
Sqr Root), using the input range defined by the
transducer and the associated output range.

MAN

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