Operation And Readout Of Capture Done Flag (X4/X5) - Panasonic FP7 User Manual

8.5.3 Operation and Readout of Capture Done Flag (X4/X5)

 Basic operation
• On the completion of capturing, the capture done flag is reflected in the operation memory of
the CPU (X4/X5) at the time of I/O refresh.
• In case of the capture function, the capture done flag is reset by executing the capture
enable request signal (Y7).
Scan time
CPU
unit
Capture enable
(Y7)
Capture trigger
(Control signal)
Count value
High-
speed
counter
unit
Capture 0 register
Capture 0 done
internal signal
Scan time
Capture 0 done
CPU
flag (X4)
unit
Read out data to
operation memory
using program
(Note 1) Turn on the capture enable signal using the user program.
(Note 2) The high-speed counter unit performs the capture operation without synchronizing with the operation of the
CPU unit every time control signals turn on as the capture trigger. The capture done internal signal used for the
system in the high-speed counter unit is reset at the time of I/O refresh of the CPU unit.
(Note 3) The capture done flag of the CPU unit is reflected in the operation memory (X4/X5) at the time of I/O refresh.
It is read to an arbitrary operation memory with the user program using the capture done flag. It is read at the
timing of an appropriate operation processing.
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I/O refresh
Operation
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I/O refresh
Operation
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I/O refresh
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I/O refresh
Operation
2
(Note 1)
(Note 2)
(Note 3)
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