Hi there I have an enquiry. We are looking to expand an exisitng Utility system that uses S7 400s and WinCC flexible on MP277. We were going to put in MP277s and S7400s on the expansion until the Declaration of maturity was issued. Now I am a bit confused of my options.....if i have to use TIA portal (instead of flexible) on the expansion spur with my new comfort panel do i have to purchase the new S71200 or S7 1500 PLC or can i use a S7400 ? If i can use an S7 400 with the TIA comfort software then what do i program the s7400 in? thanks
