BS 121 122 123

Have i excute the cycle time in the OB1 ? and comment the FC1 ? 

Hello Hazzem;

In Step 5, BS 121 contains the average cycle time of te CPU, BS 122 poins to the Max. Cycle time, BS 123 shows the Min Cycle time.

In Step 7, these values are part of the local data of OB1 and can be easily read out. You do not need your FC1 for this purpose in a step 7 program.

See our friend Umencho's answer here:

https://support.industry.siemens.com/tf//ww/en/posts/about-of-bs-121-bs-122-bs-123/51706?page=0&pageSize=10

The screenshot below is taken from the System and Standard Functions for S7300/400 CPUs.

https://support.industry.siemens.com/cs/ww/en/view/109751826

Hope this helps,

Daniel Chartier

Thanks dchartier,

it's so clear and it works.