Hello,

RetroK

Hello

I want to know scantime of 412-5H  cpu?

How can I check?

 Scan time is the time that  is required for CPU to execute OB1 and all interrupts such as OB3X and others.The fast and easiest way is to write the user program and download it to actual CPU and measure the actual scan time.You can find it :

1. In module information-->Scan cycle time
2. In parameters of OB1

If you don't have the CPU, based on execution time mentioned for each instruction in the instruction set manual you can roughly calculate it.For specific complex, you need to consult the manual related.

I hope it helps,

hdhosseini

Hello RetroK;

There are many posts on the forum that refer to the S7 CPUs scan cycle, look for them using the search box at the right of this page. Or look on the web for documentation from other sources.

For example, this article refers to the S7-300/400 CPU scan cycle:

http://www.plccenter.cn/Siemens_Step7/bas00105.htm

For the runtime values of Min, Max and Actual scantime, refer ot the values of the OB1 parameters, or look at the CPU porperties, Scan Time tab.

This document shows the changes in the S7-1500 CPUs, the term "scan" is no longer used, the prefered tem is "Cycle and response time":

SIMATIC S7-1500, S7-1500R/H, ET 200SP, ET 200pro Cycle and response times

https://support.industry.siemens.com/cs/ww/en/view/59193558

Hope this helps,

Daniel Chartier