National Instruments NI EDIDS-2400 Series, User Manual, Page: 184 / 314

184 | ni.com | NI EDIDS-2400 Series User Manual
Tip Strip: Auto-clears EPT errors during EngineStatus = CRANKING
Detail: Sometimes, as the engine stops, the crankshaft may spin in a way that causes an erroneous loss of sync as
the crankshaft comes to a rest and a fault flag will be set. This can often be prevented by increasing the StallSpeed
value. However, if an EPT fault flag is set when the engine stops, the DI Driver System can optionally automatically
clear any EPT fault flags during the next cranking of the engine for starting. When this button is ON , then EPT error
flags will be automatically cleared while EngineStatus indicates CRANKING .
CamOffsetEnable
Tip Strip: Enables the cam signal to be offset by a specified number of crank pulses
Detail: The DI Driver System provides an optional offset function applied to the cam signal selected by CamSelect .
The offset function offsets the cam signal by the number of crank teeth specified by CamOffset . The starting
reference for the offset is the rising edge of the cam signal input to the function. The resulting offset cam signal will
have a width equal to one crank tooth period. The offset cam signal will go high at the falling edge of the crankshaft
signal immediately following the specified CamOffset number of rising edges of the crank signal. The offset cam
signal will go low at the following rising edge of the crank signal. The resulting signal may need to be extended. The
input to the cam offset function is from the digital input assigned to the Cam1 or Cam2 signal via the Digital Input
Setup window. The output of the cam offset function is delivered to the cam extension function. When Enabled , the
cam signal is offset. When Disabled , the camshaft signal is unaltered. The offset and the extended cam signals may
be monitored in the EPT Diagnostics tab.
CamOffset
Tip Strip: Specifies the number of crank pulses to offset the cam pulse
Units: pulses
Detail: The DI Driver System provides an optional offset function applied to the cam signal selected by CamSelect .
The offset function offsets the cam signal by the number of crank teeth specified by CamOffset . The starting
reference for the offset is the rising edge of the cam signal input to the function. The resulting offset cam signal will
have a width equal to one crank tooth period. The offset cam signal will go high at the falling edge of the crankshaft
signal immediately following the specified CamOffset number of rising edges of the crank signal. The offset cam
signal will go low at the following rising edge of the crank signal. The resulting signal may need to be extended. The
input to the cam offset function is from the digital input assigned to the Cam1 or Cam2 signal via the Digital Input
Setup window. The output of the CamOffset function is delivered to the CamExtension function. The offset and the
extended cam signals may be monitored in the EPT Diagnostics tab.