Configure Frequency Output Mode (Dual-Pulse Mode) - Emerson Micro Motion 5700 Configuration And Use Manual

Configuration and Use Manual
MMI-20025166
Procedure
Set Frequency Output Direction as desired.
Option Description
Positive Flow Only •
•
Negative Flow •
Only
•
Both Positive and The Frequency Output reports the absolute value of the flow rate according to the
Negative Flow configured scaling method. It is not possible to distinguish between forward flow and
reverse flow from the Frequency Output alone. This setting is typically used in
combination with a discrete output configured to report flow direction.
Related information
Configure Sensor Flow Direction Arrow
Configure Discrete Output Source

8.4.4 Configure Frequency Output Mode (dual-pulse mode)

Menu > Configuration > Inputs/Outputs > Channel x > I/O Settings > Dual-Pulse Mode
Display
Device Tools > Configuration > I/O > Outputs > Frequency Output Mode
ProLink III
Configure > Manual Setup > Inputs/Outputs > Channel x > Frequency Output x > Mode
Field Communicator
If you have two frequency outputs, Frequency Output Mode defines the relationship between their signals.
Frequency Output Mode is used to implement dual-pulse mode or quadrature mode.
Restriction
If you do not have two frequency outputs on your transmitter, Frequency Output Mode is set to Independent
and cannot be changed.
Important
If Frequency Output Mode is set to anything other than Independent, the configuration of
Frequency Output 1 is applied to Frequency Output 2. Any configuration parameters set for
Frequency Output 2 are ignored. Also, status information for Frequency Output 2 is ignored.
Prerequisites
If you want to use dual-pulse mode:
• Channel C must be configured as Frequency Output 1.
• Either Channel B or Channel D, or both, must be configured as Frequency Output 2.
Procedure
Set Frequency Output Mode as desired.
Configuration and Use Manual
Forward flow: The Frequency Output reports the flow rate according to the
configured scaling method.
Reverse flow: The Frequency Output is 0 Hz.
Forward flow: The Frequency Output is 0 Hz.
Reverse flow: The Frequency Output reports the absolute value of the flow rate
according to the configured scaling method.
Integrate the meter with the control system
March 2019
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