CPU scan cycle monitoring time and program scan time - Database & Sql Blog Articles

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As shown in the figure, the program is executed 500 times. Would you like to ask how long it takes? The scan cycle time of the CPU is 150ms. Is it possible to report the failure beyond the monitoring time of the CPU? What is the time for the CPU to scan a network1? The CPU315-2DP is used.

Answer: 1. The program is executed cyclically 500 times. Would you like to ask how long it takes?
If the scan cycle time of the CPU is 150ms and the program loop is executed 500 times, it is a relationship of 150msX500.
2. Is it possible to report the failure beyond the monitoring time of the CPU?
If the watchdog function is enabled, a fault is reported.
3. What is the time for the CPU to scan a network1? The CPU315-2DP is used.
The number of instructions for a network1 is variable, and its scan time is a function of the number of instructions. The user does not need to consider the scan time of one instruction and one program segment. It is important to pay attention to the scan time of one cycle. The cycle time can be determined by the temporary variable of OB1.
The corresponding temporary variables are stored in the OB1 declared variable section and each corresponds to a different local address word.