·194·
Operating manual
CNC 8055
CNC 8055i
10.
PLC
·T· MODEL
SOFT: V02.2X
Logic analyzer
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Shifts the cursor a screen to the right.
The information window of the CNC shows the position of the cursor, vertical green line, with respect
to the trigger position, vertical red line. That information is shown as "cursor offset:" and it is given
in milliseconds.
Analize trace
Once the data capture is done, the CNC, besides showing the trace in the status window, enables
the "ANALYZE TRACE" softkey.
This option may be used to position the cursor (vertical green line) at the beginning of the trace,
at the end or at a particular point of the trace. Likewise, it may be used to change the time base used
to draw the trace or calculate the time between two points of the trace.
To do so, the following softkey options are available:
Find init
It will show the beginning of the trace with the cursor positioned at the beginning of the trace.
Find end
It will show the last portion of the trace with the cursor positioned at the end of the trace.
Find trigger
It will show the trace area corresponding to the trigger area. The position where the trigger took place
will be shown with a vertical red line superimposed on the trace.
The CNC will execute this option when the trigger occurs while analyzing the trace.
Find time
When pressing this softkey, the CNC will request the desired cursor position with respect to the
trigger point. This value is given in milliseconds.
For example: If a "Time search" of -1000 milliseconds has been selected, the CNC will show the
portion of the trace for 1 second prior to the trigger instant.
If no trigger has occurred while analyzing the trace, the CNC will assume that the indicated position
is referred to the beginning of the trace.
Calculate times
This option may be used to calculate the time between two points of the trace; follow these steps
to define the starting and last points of the calculation.
Place the cursor at the first point of the calculation press the "MARK BEGINNING" softkey to validate
it. The cursor is moved using the [] [] keys, "previous page" and "next page".
Place the cursor at the last point of the calculation press the "MARK END" softkey to validate it.
The message window of the CNC will show the amount of time between them. This time is given
in milliseconds.
This feature may be very useful to calculate precisely flank times of a signal, time between the trigger
of two signals, time between the trigger of a signal and the beginning of the cycle, etc.
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