National Instruments NI DIDS-2003, Manual, Page: 76 / 214

National Instruments Direct Injector Driver System Manual
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PFI_ModuleEnable
Tip Strip: Enables PFI Driver module operation
Detail: If a PFI driver module is inserted in the assigned slot , externally powered , and PFI_ModuleEnable is
ON , then the controller begins communicating with the module and allows the module to operate.
PFI_Mode
Tip Strip: Selects operating mode for PFI Driver module
Detail: Operating mode applied to the PFI Driver module.
The PFI Driver module can be assigned a mode of operation which will apply to all PFI channels. The
lowside channels are not affected by this mode parameter. The PFI_Mode refers to the mode of sending
injection commands to the channels of the module.
Direct Mode: The PFI Driver module PFI channels are commanded directly by external digital inputs of the
NI 9411 modules. The digital input which commands each channel can be configured via the Digital Input
Setup window. The digital input level which commands the PFI channel ON is configured via the Invert
buttons of the Digital Input Setup window. The duration of the injection command is determined by the direct
duration of the digital input.
Calibration Mode: Calibration mode is for the purpose doing injector flow calibrations. Calibration mode
is configured via the Calibration Mode Setup window for a specified number of injection events, command
duration and command period. Only one PFI channel of the module may be enabled for Calibration Mode. If
more than one channel is enabled, then commands will not be delivered.
Triggered Multi-Pulse (TMP) Mode:
The PFI Driver module PFI channels are commanded by a specified
sequence of pulses and triggered by an external digital rising or falling edge to the assigned 9411 digital
input channel. The pulse sequence is configured via the PFI tab of the Pulse Generation Setup window. The
external trigger channel is assigned via the Digital Input Setup window.
Engine Position Tracking (EPT) Mode: The PFI Driver module PFI channels are commanded by a
specified sequence of pulses and triggered by crankshaft angle events for each pulse, with respect to an
assigned Top Dead Center (TDC) reference value. The pulse sequence is configured via the PFI tab of the
Pulse Generation Setup window. The TDC reference value is configured via the TDC Channel Mapping tab
of the Engine Position Tracking Setup window. Engine position tracking parameters are configured via the
EPT tab of the Engine Position Tracking Setup window for a variety of crank and cam signal patterns.
PFI_OneShot
Tip Strip: Generates one-shot command to selected channel