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Viewing and Saving Data (PIDs)
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NOTE
If three parameters are locked, one of them must first be unlocked before
another parameter can be locked.
z
To unlock parameters:
1.
Scroll through the data list and highlight the parameter to be unlocked, or
released.
2.
Select the
Lock/Unlock
icon on the toolbar.
The released parameter and the lock icon disappear from the list at the top of
the data list.
3.
Repeat Step 1 and Step 2 to release other parameters if needed.
5.4.4 About the Data Buffer
The diagnostic tool has the capability to collect, store and save PID data utilizing
internal storage memory and buffer memory.
When Data is displayed onscreen, a data buffer automatically starts to store it in
buffer memory. The data buffer runs continuously (storing data) until the Pause,
Clear, or Save icon is selected.
Buffer memory is limited to a predetermined “total” size. When buffer memory
reaches it’s full capacity, the data buffer will continue to store new data, however
earlier stored data will be removed to allow room for the new data being stored.
The most recent data is always available for review when Pause is pressed, and
can be reviewed using the toolbar controls.
The Data Buffer Indicator (
left arrow) can be used to visually see the
amount of stored buffer data. This graphical indicator uses a bar graph to show how
much stored data is in the memory buffer.
Figure 5-27
The Data Buffer Position Counter (
right arrow and
) indicates:
–
first value = the numerical position of the active data point as displayed within
buffer memory
–
second value = indicates the maximum data buffer size value (e.g. 4000)
(right arrows) shows the relationship between the graph scale and the
first value in the Position Counter.
During data review a slider on the bar graph (
left arrow), indicates the
position of the current data point as displayed in relation to the entire memory buffer
contents.
Figure 5-28