[?]: s7-300CPU to s7300CPU Communication using DP Only?

SIMATIC S7-200/300/400, Step7, PCS7, CFC, SFC, PDM, PLCSIM,
SCL, Graph, SPS-VISU S5/S7, IBHsoftec, LOGO ...
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reymond_craig
Posts: 139
Joined: Wed Sep 26, 2007 2:57 am
Location: Philippines

[?]: s7-300CPU to s7300CPU Communication using DP Only?

Post by reymond_craig » Wed Sep 26, 2007 3:48 am

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. :)

lonzo
Posts: 46
Joined: Tue Oct 03, 2006 7:09 am
Location: Europe

Post by lonzo » Thu Sep 27, 2007 2:45 pm


reymond_craig
Posts: 139
Joined: Wed Sep 26, 2007 2:57 am
Location: Philippines

Post by reymond_craig » Fri Sep 28, 2007 5:11 am

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

PrackeR
Posts: 3
Joined: Mon Oct 30, 2006 5:48 pm
Location: Netherlands

Post by PrackeR » Tue Oct 02, 2007 4:44 pm

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

reymond_craig
Posts: 139
Joined: Wed Sep 26, 2007 2:57 am
Location: Philippines

Post by reymond_craig » Thu Oct 04, 2007 2:45 am

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

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