S7 300 code

[Hakan Kilic]

Hi All

I would like to code following in my plc:

Read a timer(T 1) from a server (I have already modbus comm. running).
Take snapshot of the value
After 5 seconds later take a snapshot of the value again
And compare these two snap shot value and see if they are equal to each other.

Do you have any suggestion in STL?

Thanks in advance