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[?]: s7-300CPU to s7300CPU Communication using DP Only?
Posted: Wed Sep 26, 2007 3:48 am
by reymond_craig
Good morning, I just want to ask for some help on how to gather data on other s7300 cpu w/out using cp.
Is it posible to get using profibus DP only?
Do I need some Standard FC? Please, your help will be much appreciated.
Thank you very much in advance.
Posted: Thu Sep 27, 2007 2:45 pm
by lonzo
Posted: Fri Sep 28, 2007 5:11 am
by reymond_craig
Hi Sir,
Thanks for the useful links. This will help me to improve my knowledge on siemens automation system.
Thank you very much.
Warm regards,
Rey
Posted: Tue Oct 02, 2007 4:44 pm
by PrackeR
Hello,
You can use sfc14 and sfc15 to transfer consistent data via profibus to/from another cpu.
One cpu will be the master the other slave.
I'm using it very often to transfer a lot of data.
regards,
PrackeR
Posted: Thu Oct 04, 2007 2:45 am
by reymond_craig
Hello,
Thanks Pracker, I think I should try this too. It looks interesting. By the way, if I'm going to transfer many data does it means that I need to repeat to call this sfc's in my ladder editor, because i think it only transfer 1 byte per call. And I can't undrstand that much what should I put on the parameter LADDR? If you don't mind Can I have snapshot on where you get this address when you program this? I think I 'm taking some of your precious time but your help will make me a better one in my chosen field. Thank you.
Thank you very much.
Warm regards,
Rey