Dear Experts,

I created a project by using S7 300 and general PC in Wincc Professional V15.1 .

I tried to create a trend to view the clock memory bit No.7 in my S7 300 PLC and I thought the wave form in the trend will be like a square wave but the the wave form appeared in the trend like triangular wave as shown in attached video .

This is my first time doing a trend in Wincc professional so I don't know what is the wrong .

Kindly can you help me how can I display the correct form of the signals in the trend ? .

Best Regards 

Hi!

Please, find in the link below the part of the Manual for WinCC Professional v15.1 where it is explained the requirements and the steps to create trends.

Hope this can help.

-Creating trends for the trend window. (RT Professional)

https://support.industry.siemens.com/cs/es/en/view/109755202/22291455755

Br!

Hi,

Thanks for your reply.

I already did the steps requirements for doing trend but is it possible to display square wave in the trend? because I inserted two timers to generate square wave instead of clock memory and increased the time but also the square wave didn't look real .

Regards