11/19/2017 7:59 PM | |
Joined: 9/27/2006 Last visit: 9/22/2024 Posts: 12282 Rating: (2685) |
Hello Ahmed; The easiest way to exchange data between 2 CPUs over Profibus-DP would be to set one as DP-master, the other as DP-slave, using the integrated Profibus-DP ports of the CPUs. That would enable you to exchange up to 244 bytes IN and OUT (as seen from the master) per Profibus cycle. In the following link you will find a description of the configuration steps between 2 s7 CPUs (simply open the sample program to get a good start, and change the CPU models to match your project), and it will show you how to setup the data exchanges between the 2 CPUs. DP link between CPU 315-2DP (slave) and S7-400 (master) with STEP 7 V5.3 Note that the data exchanges will be configured in the input/output addresses of the CPUs. To exchange data between DBs, for example, you will have to copy the data that you want to transfer to the appropriate addresses configured for the exchanges. Hope this helps, Daniel Chartier |
Last edited by: dchartier at: 11/19/2017 8:00:26 PM |
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