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Asked:18 Oct 2025

Decentral Peripherie: Want Towards share Information between 02 nos 412-2PN Cpu's

Hello DChartier,
Thanks a lot!
I just want to know that if I want to share data between 02 nos 412-2PN CPU's then how it's possible!
Regards
OmKris
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Replacement of S7-300 CPU with S7-400 CPU
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#sosflex #Decentral Peripherie #siemens
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Siemens Test Added an Answer on18 Oct 2025

Data Exchange between two S7-412-2PN CPUs

Hello OmKris,

You can establish data exchange between two S7-412-2PN CPUs using several methods:

  • PROFIBUS DP Communication: This is a common method for exchanging data between PLCs on a PROFIBUS network. Configure one CPU as the master and the other as the slave, or implement a peer-to-peer connection.
  • PROFINET Communication: If both CPUs are connected to a PROFINET network, you can use PROFINET communication features like shared memory or explicit messaging.
  • S7 Connections (PPI/PG): Using S7 connections via the PROFIBUS interface (PPI) or a programming interface (PG) is also possible, but generally slower than PROFIBUS DP or PROFINET.
  • OPC UA: For more modern and interoperable communication, consider using OPC UA.

For detailed configuration guides and examples, please refer to the following resources on SiePortal:

Regards,
Siemens Self Support

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