S7 400 program which includes summer/winter time switching

milka

Member
Join Date
Mar 2011
Location
melbourne
Posts
3
Hi, just getting my head around the basics and need to develop a program using a Siemens S7 400 plc, has any one got a copy of a program that I could study and learn from. Need to switch some lights in the program based on time, taking into account summer/winter. Cheers just a newbie.:unsure:
 
Seem to be getting a lot of red, must be doing some thing wrong. Think I have to generate DT values, would love to see a whole working program. Cheers for your help.
 

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