National Instruments NI DIDS-2103 User Manual page 126

AutoClearFlagWhileCranking
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
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
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
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
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
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
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
function is delivered to the
monitored in the
126 | ni.com | NI DIDS-2100 Series User Manual
value. However, if an EPT fault flag is set when the engine stops, the DI Driver System
CamExtension
EPT Diagnostics tab.
Digital Input Setup
Digital Input Setup
function. The offset and the extended cam signals may be
EngineStatus
CamOffset number of rising
window. The output of the cam offset
CamOffset number of rising
window. The output of the
indicates
EPT
CamOffset