Dear all

Please support me this problem :

Now I'm doing a project need to use real time clock for some motor, them are going to run with real time, and I was read 12h mode "hour 0 - 11" only. I don't know how to read correct 24h mode on from PLC

Note : I synchronous real time of PLC with my PC (on my PC is 24h mode) but when I synchronous real time on PLC again => It is 12h mode still. 

thanhke

Thanks for your support, I solved this problem. Simple to do, using Write RTC to PLC.

Hi.

I am glad you are happy with the solution you employed.
Do allow me to have a chat with you.

Above is a picture showing what you see when setting the time on the PLC. This is a false (processed) representation of how the PLC handles time. What you see in the picture is "eye candy", it is (in this case) a processed presentation of data to suit display needs of a user (according to Siemens designers). For you and I, it makes more sense to have 24hour representation - but there is nothing wrong with the design choice.

The data type that I showed you in my previous post, is how a time stamp can be extracted from the PLC. There are however other PLCs (S7-200?) that has a different way of giving a time stamp.

I do urge you to look at the different commands available to read time from the clock. Also notice there are OB code blocks that can generate "interrupts" at preset time-of-day moments. This may help your project.

Greetings.
w

Dear 

You can chat with me via Skype

Kế