10
CPU MODULE PROCESSING TIME
10.1 Scan Time
10.1.1 structure and calculation of scan time
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(2) Calculation of scan time
The
scan time is calculated from the following formula.
SM = Tru + Tio + Tie + Tend + Ts + Tc (ms)
• SM :Scan time
• Tru :
Module refresh time
• Tio :I
/O refresh time
• Tie :
Instruction execution time
• Tend:
Execution time for each function processed by the END
• Ts :
Service processing time
• Tc :
Common processing time
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