KROHNE H250 M40 FOUNDATION FIELDBUS - Manual (Page 61)

OPERATION
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H250 M40
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BKCAL_IN BKCAL_IN BKCAL_IN BKCAL_IN
Back Calculation Back Calculation Back Calculation Back Calculation
Input Input Input Input
RW The value and status used for backwards tracking of the
output, provided by a link to the back calculation output
parameter of a downstream block.
Status RW Status of BKCAL_IN
Value RW Value of BKCAL_IN
BKCAL_IN BKCAL_IN BKCAL_IN BKCAL_IN
Back Calculation Back Calculation Back Calculation Back Calculation
Input Input Input Input
R The output value and status provided to an upstream block for
output tracking when the loop is broken or limited, as
determined by the status bits. This information is used to
provide bumpless transfer to closed loop control and to
prevent windup under limited conditions when that becomes
possible.
Status R Status of BKCAL_OUT
Value R Value of BKCAL_OUT
BLOCK_ALM BLOCK_ALM BLOCK_ALM BLOCK_ALM
Block Alarm Block Alarm Block Alarm Block Alarm
RW 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.
Unacknowledged RW A discrete enumeration which is set to "Unacknowledged"
when an alarm occurs, and set to "Acknowledged" by a write
from a human interface device or other entity which can
acknowledge that the alarm/event has been noticed.
Uninitialized
Setting:
Uninitialized / Acknowledged / Unacknowledged
Alarm State R A discrete enumeration which gives an indication of whether
the alert is active and whether it has been reported.
Uninitialized
Setting:
• Uninitialized
• Clear - reported: Alarm not active and reported
• Clear - not reported: Alarm not active and not reported
• Active - reported: Alarm active and reported
• Active - not reported: Alarm active and not reported
Time Stamp R 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 will be maintained constant until alert
confirmation has been received - even if another change of
state occurs.
Uninitialized
Setting:
MM / DD / YY (Month / Day / Year)
HH:MM:SS (Hour:Minute:Second)
Proportional Integral Derivative Block
Parameter
DD Name Access Description
settings Initial Value
AD_H250_M40_FF_R02_en_4001208201_PRT.book Page 61 Friday, February 21, 2014 11:25 AM