Flowserve MX FOUNDATION Fieldbus Field Unit Instrukcja Użytkownika Pobierz pdf (Strona 51)

MX/QX FOUNDATION Fieldbus Field Unit FCD LMENIM2330-01 – 08/11

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Transducer Block Parameters Description

ST_REV The revision level of the static data associated with the function block.

The revision value is incremented each time a static parameter value in

the block is changed.

TAG_DESC The user description of the intended application of the block.

STRATEGY The strategy ﬁeld can be used to identify grouping of blocks. This data

is not checked or processed by the block.

ALERT_KEY The identiﬁcation number of the plant unit. This information may be

used in the host for sorting alarms, for example.

MODE_BLK The actual, target, permitted, and normal modes of the block.

Target This is the mode requested by the operator. Only one mode from those

allowed by the permitted mode parameter may be requested.

Actual This is the current mode of the block, which may differ from the target

based on operating conditions. Its value is calculated as part of block

execution.

Permitted Deﬁnes the modes, which are allowed for an instance of the block. The

permitted mode is conﬁgured based on the application requirement.

Normal This is the mode, which the block should be set to during normal

operating conditions.

BLOCK_ERR This parameter reﬂects the error status associated with the hardware or

software components associated with a block. It is a bit string, so that

multiple errors may be shown.

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

Unacknowledged A discrete enumeration which is set to Unacknowledged when an

update occurs, and set to Acknowledged by a write from a human

interface device or other entity which can acknowledge that the alarm

has been noticed.

Update State A discrete enumeration, which gives an indication of whether the alert

has been reported.

Time Stamp The time when evaluation of the block was started and a change in

alarm/event state was detected that is unreported. The time stamp value

is maintained constant until alert conﬁrmation has been received —

even if another change of state occurs.

Static Rev The static revision of the block whose static parameter was changed

and is being reported. It is possible for the present value of static revi-

sion to be greater than this because static can be changed at any time.

Relative Index The OD index of the static parameter whose change caused this alert,

minus the FB starting index. If the update event was caused by a write

to multiple parameters at the same time, then this attribute will be zero.

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.

TRANSDUCER_DIRECTORY A directory that speciﬁes the number and starting indices of the

transducers in the transducer block. For further information, please

refer to the Transducer Block Application Process – Part 1 (FF-902)

speciﬁcation.

TRANSDUCER_TYPE Identiﬁes the transducer that follows.

1 2 ... 46 47 48 49 50 51 52 53 54 55 56 ... 83 84

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