Mitsubishi L02CPU User Manual page 115

(2) Precautions
• The minimum unit of measurement time is 0.01ms. If the measurement time is less than 0.01ms, 0.000ms is
displayed.
• When between the FOR and NEXT instructions is specified, the execution time of one scan between the
specified steps is displayed.
• If a subroutine program call instruction (CALL instruction) exists within the scan time measurement range,
processing time for the subroutine program is included in the scan time.
• If an interrupt/fixed scan execution type program is executed within the scan time measurement range,
program execution time is added to the scan time.
• Scan time from one program file to another cannot be measured. Also, scan time cannot be updated on the
"Scan Time Measurement" dialog box in the following cases.
When the branch instruction is specified in the end step
Ex. Ex.
The JMP instruction is specified in the end step.
When the end step is executed before the start step
Ex. Ex.
The start step is specified as the next step of the CALL instruction and
the end step is specified in a subroutine program executed by the CALL
instruction.
The start step is executed
after the end step by the CALL
instruction.
Main
program
Subroutine
program
Measurement range
Start step: 3
End step: 6
Start step: 3
End step: 8
CHAPTER 3 CPU MODULE FUNCTIONS
Measurement range
When only the start step is executed
Ex. Ex.
The specified end step is not executed by the JMP instruction.
The end step is
skipped by the JMP
instruction.
When the start step is executed continuously
Ex.
Ex.
Only the start step is specified between the FOR and NEXT instructions.
The start step is executed
continuously since it is specified
between the FOR and NEXT
instructions.
Start step: 3
End step: 9
Start step: 8
End step: 13
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