Need S7-400 to s7-300 profibus communication example (db to db)

I need example for s7-416 to s7-300 data transmission.

For instance db10.dbd2 data transfer to db30.dbd4 to another plc via profibus.
Please give me some configuration examples , profibus couplers etc.

Thanks

Pasi Petteri Manninen

Is the S7-300 a DP CPU, or do you use a CP for the Profibus connection ?

S7-317T 2dp technology cpu and profibus coupler between 416 and 317.

Of course straight connection if possible.

These FAQs tells it all:

http://support.automation.siemens.com/WW/view/en/22327981

http://support.automation.siemens.com/WW/view/en/18852586
(tip: do use the mentioned bit to know that the conenction is OK).

http://support.automation.siemens.com/WW/view/en/19281019
(has sample project)

http://support.automation.siemens.com/WW/view/en/1179382
(the full manual)

edit:
Using a DP/DP coupler means that you cannot directly transfer a DB from one CPU to the other. Everything happens via I/O addresses.
If you do need to send one DB from one CPU to the other, you should look into connecting both CPUs as masters to the same network (no DP/DP coupler). Then you can configure an S7 connection between the two CPUs and use PUT/GET to transfer DBs. Notice that it is the S7-400 that must do the PUT'ing and GET'ing.

Yes i found little bit information and we have same example on our customer . Network side s7-300 is 12mbs and s7-400 side 1.5mbs.
Few servo drives needs faster profibus connection for real time data.

SFC14 and SFC15 same like a data transfer between ABB freqency converter via profibus.

But all informations are wellcome

Best regards

Pasi Petteri Manninen

Yes, you need to use SFCs if more than 4 bytes of data has to be consistent.

Hello pasimanninen,

If you just use Search engine on this site you will find what you need about DPDP coupler. Basicaly you can exchange data via bytes and words, what is input on the one side of the profibus network is the output on the other side.

Thank you Krcedinac

My problem is now resolved

Special thanks !

Thank you JesperMP, i got lots of information from you !

Now is very easy describe I/O adresses in hardware configuration on both PLC`s

Special thanks !