Rockwell-automation 1756-CFM ControlLogix Configurable Flowmeter Modul Uživatelský manuál stáhnout pdf (Strana 101)

101Rockwell Automation Publication 1756-UM010B-EN-P - December 2011

Configuring the Configurable Flowmeter Module 101

Sample Configuration for

Totalizer Mode

Prover Function

In the Totalizer Mode Prover function, the CFM module interfaces to a prover

and counts pulses using a Flowmeter or positive displacement meter. The

module then scales pulse count to engineering units. The CFM module also

calculates frequency over a user-defined time period.

When using totalizer mode (with prover or fill function), you may apply a

K-factor as a function of frequency, as shown below.

This section offers a sample configuration to configure your CFM module for

totalizer mode prover function. In this configuration, channel 0 is configured

and channel 1 is left unused. For a detailed explanation of the features available

in this mode, see page 42

Follow the steps below to configure your CFM module for totalizer mode

prover function.

1. Create a new module, see page 80

2. Set all communications options, including:

 name

 communication format

 slot number

 minor revision

 electronic keying

 RPI - For this application, the minimum RPI = 50 ms

See pages 81

to 84.

3. Access the module tags via the Tag Editor, see page 85

K-Factor

Frequency

0100 150

550

600

1 2 ... 96 97 98 99 100 101 102 103 104 105 106 ... 167 168

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Rockwell-automation 1756-CFM ControlLogix Configurable Flowmeter Modul Uživatelský manuál Strana 101