Rockwell Automation 1756-CFM ControlLogix Configurable Flowmeter Module User Manual

Page 102

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102

Rockwell Automation Publication 1756-UM010B-EN-P - December 2011

102 Configuring the Configurable Flowmeter Module

4. Change only the tags listed in

Table 8

. Ignore all other tags; they do not

affect totalizer mode prover function.

Table 8 - Tag Changes Required for Totalizer Mode Using Prover Function

Name

Style

Data type

Definition

Enter this

Value

C.ProgToFaultEn

Decimal

BOOL

Sets outputs to selected Fault state when

the owner-controller is in Program mode.

0 = outputs use Program mode setting

1 = outputs use fault mode settings

0

C.Operations[0].FilterControl.0

Decimal

SINT

bit 0 = 1 - apply filter to F0

bit 1 = 1 - apply filter to G0

bit 2 = 1 - apply 1second debounce to G0

0

C.Operations[0].MeterSamples

Decimal

SINT

50

C.Operations[0].ThresholdControl

Decimal

SINT

Sets flowmeter input threshold control

0 = 50mV threshold (magnetic pickup)

1 = 1.3V threshold (TTL)

2 = 4.0V threshold (PreAmp)

0

C.Operations[0].CalculationType

Decimal

SINT

Sets calculation type

0 = Counts/K-factor x MeterFactor correction

x CCF

1 = Counts/K-factor x MeterFactor correction

x AGA 7 compensation or CCF if CCF is not

equal to 0.0

0

C.Operations[0].AccelCalculation

Decimal

SINT

Number of past samples to use to calculate

an acceleration value.

Sample range is 0 to 255.

50

C.Operations[0].MinDetectableFreq

Float

REAL

User-defined value from 0 - 120,000.

Sets FreqAverage, FreqPeriod, Speed,

GrossRate, and NetRate reading to 0 when

calculated value is less than value entered.

GrossVolume, and NetVolume do not

increment below this value even though

TotalCounts increments over time.

5

C.Operations[0].HighestAllowedFreq

Float

REAL

User-defined value between

MinDetectableFreq and 120,000

When the frequency reaches this level, it

sets the overspeed alarm limit

3700

C.Operations[0].AccelAlarmValue

Float

REAL

Sets Acceleration alarm limit
-Maximum acceleration (cycles per second

2

)

<AccelAlarmValue< +Maximum acceleration
(cycles per second

2

)

100

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