Flowserve MX FOUNDATION Fieldbus Field Unit Manuale Utente Scaricare il pdf (Pagina 52)

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

Transducer Block Parameters Description

XD_ERROR One of the transducer error codes deﬁned in the FF Transducer

Speciﬁcations. Refer to Section 4.8 of FF-903.

COLLECTION_DIRECTORY A directory that speciﬁes the number, starting indices, and DD Item IDs

of the data collections in each transducer within a transducer block. For

further information, please refer to the Transducer Block Application

Process – Part 1 (FF-902) speciﬁcation.

FINAL_VALUE The proposed valve position and status written by an analog Function

Block.

Status Digital transducers, unlike their analog versions, can detect faults that

make the measurement bad or prevent the actuator from responding.

This additional, valuable information is passed along in the form of a

status attribute with each transmission of a data value.

Value A numerical quantity received by the block parameter from another

block parameter to which this block is linked. Or a default or user

entered value if the parameter has not been linked.

FINAL_VALUE_RANGE The High and Low range limit values, the engineering unit’s code, and

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

display the Final Value.

EU at 100% The engineering unit value that represents the upper end of range of the

associated block parameter.

EU at 0% The engineering unit value that represents the lower end of range of the

associated block parameter.

Units Index Device Description units code index for the engineering unit descriptor

for the associated block value.

Decimal The number of digits to the right of the decimal point that should be

used by an interface device in displaying the speciﬁed parameter.

FINAL_VALUE_CUTTOFF_HI If the FINAL_VALUE is more positive than this value, the value is forced

to its maximum high value (fully opened).

FINAL_VALUE_CUTTOFF_LO If the FINAL_VALUE is more negative than this value, the value is forced

to its maximum low value (fully closed).

FINAL_POSITION_VALUE The actual valve position and status, could be used at the READBACK in

an AO block.

Status Digital transducers, unlike their analog versions, can detect faults that

make the measurement bad or prevent the actuator from responding.

This additional, valuable information is passed along with each

transmission of a data value in the form of a status attribute.

Value A numerical quantity received by the block parameter from another

block parameter to which this block is linked. Or a default or user

entered value if the parameter has not been linked.

ACT_FAIL_ACTION Speciﬁes the action the actuator takes in case of failure.

ACT_MAN_ID The actuator manufacturer’s identiﬁcation number as deﬁned by the

Fieldbus Foundation.

ACT_MODEL_NUM The actuator model number.

ACT_SN The actuator serial number.

VALVE_MAN_ID The valve manufacturer’s identiﬁcation number as deﬁned by the

Fieldbus Foundation.

VALVE_MODEL_NUM The valve model number. Reference Bulletin LMENIM2306 for the MX

or LMENIM3306 for the QX.

VALVE_SN The valve serial number. Reference Bulletin LMENIM2306 for the MX or

LMENIM3306 for the QX.

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Flowserve MX FOUNDATION Fieldbus Field Unit Manuale Utente Pagina 52

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