Panasonic FP7 User Manual page 55

 Flow of trace operation
STEP 1: Startup of trace Operation
 The trace operation is started by any of the following methods; Tool software operation,
Instruction in a user program, and Autostart setting.
STEP 2: Data logging
 After the startup of the trace operation, tracing data is executed with a specified condition
when the specified trigger condition (bit device ON, cycle, or instruction) is met.
 Traced data is stored in the logging buffer memory (RAM) in the CPU unit.
 After that, the trace operation continues until the trace stop condition is met.
STEP 3: Stop of trace Operation
 The trace operation stops when either condition is met, bit or buffer full.
 When the trace stop condition is bit, the trace operation stops after the logging performed for
the specified number of samplings after the condition was met.
 When the trace stop condition is buffer full, the trace operation stops immediately.
 When the trace operation is complete successfully, the trace data acquisition done flags
(SR109, SR119 ...) turn on. At that time, a time chart can be displayed on the programming
tool FPWIN GR7 by reading the logged data.
 When "Write file after completion of trace" is set, all the data in the buffer memory in the
CPU unit is written into the file in the SD memory card and determined. The time stamp
information is the time data at the time of the occurence of stop trigger.
KEY POINTS

In the data logging process into the buffer memory, when Bit or Cycle has
been specified, the bit or the cycle is checked at the end of scan, and data
is stored in the buffer memory when the condition is met. When Instruction
has been set, data is stored into the buffer memory when the instruction is
executed.

If the trace operation is stopped by the tool software operation or the
LOGED instruction while the trace stop condition has not been met, logged
data is not saved in either the buffer memory (RAM) or an SD memory card.
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5.1 Flow of Trace Operation