Справочник Пользователя для Emerson Process Management 3420

3-9000-743 Rev S

June 2013

C.4.8

Inactive chords

The Mark II 

ChordInactv

 (bitfield) parameter is converted to the Mark III 

IsInactiveA...IsInactiveD data points as follows:

C.4.9

AlarmDef

In the Mark II, the 

AlarmDef

 parameter is used for two purposes:

•

It specifies the number of consecutive batches that a chord must be failed before the 
chord failure is indicated in the 

DataQlty

 register.

•

It specifies the number of consecutive batches that all active chords must be without 
failure for updating the chord proportions.

The Mark III provides a separate data point for each of these purposes: 

AlarmDef for the first 

purpose and 

PropUpdtBatches for the second. Since the Mark III batch update period is much 

faster than that of the Mark II, the Daniel MeterLink configuration conversion feature does not 
modify the Mark III 

AlarmDef or PropUpdtBatches data points (which should be at default 

values). These points’ values can be read and modified via the Daniel MeterLink 

Edit/Compare 

Configuration

 screen.

0

0

IsInactiveA

0 (FALSE)

1

1  (TRUE)

1

0

IsInactiveB

0 (FALSE)

1

1  (TRUE)

2

0

0 (FALSE)

1

1  (TRUE)

3

0

0 (FALSE)

1

1  (TRUE)