What is the main impact of the Siemens S7-1200's processing speed on digital quantities?

Create Date: 2024-8-30 12:03:23|Source: Siemens/Siemens

The S7-1200's digital processing speed is limited by several factors:
What is the main impact of the Siemens S7-1200's processing speed on digital quantities?

A. Input hardware delay (from the moment the state of the input signal changes to the time when the CPU is able to recognize the change when the input image area is refreshed)

B. CPU's internal processing time, including:

1. Write the output value from the process image output area to the physical output

2. Read the physical input before the user program is executed, and save the input value to the process image input area

3. Execute the user program, perform logical operations, and update the output value in the process image output area

C. Output hardware delay (the time from the time the output buffer state changes to the time the true level of the output point changes)

The above three periods of time, A, B, and C, are the main factors that limit the response speed of the PLC to process digital quantities.
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