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DFA400 Rev150730

Code 321 Flow Calibration (Single Point)

Factory programmed value: Precalibrated to Pipe Size

Options: 1 Calibration Point

This code starts the calibration program for a single ow rate.

Refer to Calibration Section.

Code 322 Flow Calibration (Multiple Point)

Factory programmed value: No Values Entered

Options: 9 Calibration Points

This code starts the calibration program for multiple ow rates. This function is

used when the ow sensor is installed in a difcult plumbing location where ow is

not linear. It corrects for nonlinear ow to provide an accurate ow rate display.

Refer to Calibration Section.

Code 340 CAN Terminator

Factory programmed value: On

Options: On, Off

This code sets the datalink terminating resistor for the module. When the datalink

is not used all module terminating resistors are set to On. When the datalink is daisy-

chained between two modules, the terminating resistors are set to On. When the datalink

is daisy-chained between multiple modules, only the two modules on the end of the

chain have the terminating resistor set to On. All other modules need the terminating

resistors set to Off.

With a Datalink Daisy-Chain

More Than Two Modules

Terminator Resistors Off Except for the Two

Modules at Each End of the Chain

With a Datalink Daisy-Chain

Primary-to-Remote Only

Terminator Resistors On

Each Module is at the End of the Chain

No Datalink Daisy-Chain

Terminator Resistors On

FRC DFA400 User Manual

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