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Parameter

Rel.

Index

Description Type Store

Size

byte

RO /

R/W

Min Max Default

OUT

The primary analog value calculated as a result of executing

the function.

DS-65 N 5 R/W

SIMULATE

Allows the transducer analog input or output to the block to be

manually supplied when simulate is enabled. When simulation

is disabled, the simulate value and status track the actual value

and status.

DS-82

D 11 R/W Disable

XD_SCALE

The high and low scale values, engineering units code, and

number of digits to the right of the decimal point used with the

value obtained from the transducer for a specified channel.

DS-68 SRC 11 R/W 0-100%

OUT_SCALE

The high and low scale values, engineering units code, and

number of digits to the right of the decimal point to be used in

displaying the OUT parameter and parameters which have the

same scaling as OUT.

DS-68 SRC 11 R/W 0-100%

GRANT_DENY

Options for controlling access of host computer and local con

trol panels to operating, tuning and alarm parameters of the

block.

DS-70 SRC 2 R/W

IO_OPTS

Options which the user may select to alter input and output

block processing.

Bit

String

SRC 2 R/W 0

STATUS_OPTS

Options which the user may select in the block processing of

status.

Bit

String

SRC 2 R/W 0

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.

Un-

signed

SRC 2 R/W 1 or 2

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.

Un-

signed

SRC 1 R/W 0

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.

Float SRC 4 R/W 0

PV_FTIME

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

onds.

Float SRC 4 R/W 0

FIELD_VAL

Raw value of the field device in percent of thePV range, with a

status reflecting the Transducer condition, before signal char-

acterization (L_TYPE) or filtering (PV_FTIME).

DS-65 D 5 RO

UPDATE_EVT

20 This alert is generated by any change to the static data. DS-73 D 14 RO

BLOCK_ALM

The block alarm is used for all configuration, hardware, con

nection 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.

DS-72

D 13 R/W

ALARM_SUM

The current alert status, unacknowledged states, unreported

states, and disabled states of the alarms associated with the

function block.

DS-74 Mix 8 R/W

ACK_OPTION

Selection of whether alarms associated with the block will be

automatically acknowledged.

Bit

String

SRC 2 R/W 0

ALARM_HYS

Amount the PV must return within the alarm limits before the

alarm condition clears. Alarm Hysteresis is expressed as a per-

cent of the PV span .

Float SRC 4 R/W 0% 50% 0.5%

HI_HI_PRI

25 Priority of the high high alarm.

Un-

signed

SRC 1 R/W 0 15 0

HI_HI_LIM

26 The setting for high high alarm in engineering units. Float SRC 4 R/W +INF

HI_PRI

27 Priority of the high alarm.

Un-

signed

SRC 1 R/W 0 15 0

HI_LIM

28 The setting for high alarm in engineering units. Float SRC 4 R/W +INF

LO_PRI

29 Priority of the low alarm.

Un-

signed

SRC 1 R/W 0 15 0

LO_LIM

30 The setting for the low alarm in engineering units. Float SRC 4 R/W -INF

LO_LO_PRI

31 Priority of the low low alarm.

Un-

signed

SRC 1 R/W 0 15 0

LO_LO_LIM

32 The setting of the low low alarm in engineering units. Float SRC 4 R/W -INF

HI_HI_ALM

33 The status for high high alarm and its associated time stamp. DS-71 D 16 R/W

HI_ALM

34 The status for high alarm and its associated time stamp. DS-71 D 16 R/W

LO_ALM

35 The status of the low alarm and its associated time stamp. DS-71 D 16 R/W

LO_LO_ALM

36 The status of the low low alarm and its associated time stamp. DS-71 D 16 R/W

1 2 ... 25 26 27 28 29 30 31 32 33 34 35 36 37

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Wika T53 Manuel d'utilisateur Page 30

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