Tracing Data - Omron CJ2 - 02-2010 User Manual

10 CPU Unit Functions

10-7-6 Tracing Data

The Data Trace function samples specified I/O memory data under specified conditions using any one
of the following timing methods, and it stores the sampled data in Trace Memory, where they can be
read and checked later from the CX-Programmer, as well as saved as files.
The following two trace methods can be used.
Normal Trace
Use this method mainly when high-speed data collection is performed for a short time, such as for
debugging. If the trace memory capacity is exceeded, the trace will stop, the trace result currently in
trace memory will be displayed, and the data will be stored at the same time in a CSV file.
CX-Programmer
If the trace memory capacity
is exceeded, the trace will
stop and the trace data will be
sent to the CX-Programmer
and displayed.
Continuous Trace
A continuous trace is used mainly for high-speed data collection over long periods of time. Even if
the trace memory capacity is exceeded, the trace will continue, and the trace data will continue to be
read to the CX-Programmer. The data will automatically be saved in CSV files whenever the display
buffer becomes full. This enables storing long-term trace result data from the start of the trace until
the end in multiple CSV files.
CX-Programmer
The latest data will be displayed
on the CX-Programmer even if
the trace data capacity is
exceeded. All of the data in the
display buffer will be
automatically saved to a CSV file.
10-68
CJ2 CPU Unit
Data to be traced
Trace
Trace memory
I/O
Sent once
CJ2 CPU Unit
Data to be traced
Trace
Trace memory
I/O
Continued
The newest data
is saved after the
oldest is deleted.
CJ2 CPU Unit Software User's Manual