how to do send receive block from plc S7300 to prosoft DP profibus?

Hello guys,

I'm also doing the project related to simatic plc S7300 and plc Allen-Bradley. Currently, the HMI is placed in between these two plc. Soon the HMI will be removed and the both plc will connect directly via prosoft DP profibus. Do you have any example how to do send receive block from plc S7300 to prosoft DP profibus? And also example for the communication?Please show me step by step since I'm beginner in plc s7300. I really appreciate your help.

Regards,

Liza

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Split from Communication between SIMATIC S7 and Allen-Bradley via PROFIBUS.

NORLIZA

Hello guys,

I'm also doing the project related to simatic plc S7300 and plc Allen-Bradley. Currently, the HMI is placed in between these two plc. Soon the HMI will be removed and the both plc will connect directly via prosoft DP profibus. Do you have any example how to do send receive block from plc S7300 to prosoft DP profibus? And also example for the communication?Please show me step by step since I'm beginner in plc s7300. I really appreciate your help.

Regards,

Liza

 Hello Liza;

Since you are about to do a Profibus-DP project, I hope you have started looking into configuring and setting up Profibus-DP communications; this would really make ypur life easier. There are a few links in the preceding pots of this thread, and you can also search on Profibus.com, the download sectio has some links you should look at.

Now: what exact model of "prosoft DP profibus" are you going to be using? For each Platform of Rockwell PLCs there is a master and a slave Profibus module. To help you we need to know which role your Prosoft card will be playing. If it is the slave module, then you have very little to do in the S7-300 DP-master, simply connect to each slave register as if you were reading an I/O address.

If the S7-300 is a slave, then you have a bit more to do, setting up a data exchange area for the communication with te Prosoft master (using a gsd file) and then writing and reading to this area to transfer the data to /from the master.

So give us a bit more information if you wish more détails on our part.

Each Prosoft module comes with a few files, including a setup guide that shows how to integrate it in the Rockwell PLC Platform, along with some ladder logis to be imported to the PLC. Read those carefully, anfd have a llok at these training videos provided by Prosoft; there might be one for your module (start by selecting the correct Platform):

https://www.prosoft-technology.com/Landing-Pages/Training-Videos

Hope this helps,

Daniel Chartier

Hi Daniel Chartier,

For your information, the exact model Profibus DP is MV156-PDPS slave module.

Regards,

Liza

Hello Liza;

This video shows how to setup a s7-300 master to a Prolinx gateway Profibus slave module.

This is quite similar to what must be done to a MVI56-PDPS, once it has been configured to work with the Controllogix as a Profibus slave.

https://www.youtube.com/watch?v=cdSlu-bJtwY

Remember: this video shows that 16 words iN and 16 words OUT have been setup as an exchange table between the master and the slave. At some point your program must populate that exchange table, i.e.  write values to the IN words to be read by the master, and must read the OUT words coming from the master so the Controllogix can use them in its program.

Hope this helps,

Daniel Chartier