I am working with anS7-400 PLC in PCS 7 v9.0 SP3 (configured in SIMATIC Manager)and need to set up communication with anS7-1500 PLC (configured in TIA Portal).
The goal is to exchange data over Industrial Ethernet., The purpose of having S7-1500 is to have a server near in the field because the ES/ Client/ Server is away from the new area.

I would like to ask:

• What is the recommended method for communication? (S7 communication via PUT/GETover ISO-on-TCP orPROFINET IO?)

• Are manual TSAP settingsneeded? If yes, what values are typically used?

• What are the required settings for the CP443-1 module (S7-400)and theS7-1500 CPU(e.g., enabling “Permit PUT/GET access”)?

• Has anyone successfully implemented this setup?

If anyone has encountered this use case and can share an official Siemens manual, configuration guide, or working example, I would really appreciate it.

Thanks in advance!

Hi jericho_griarte154
Please refer to ID: 109778362. It contains information to help with configuring PLC-to-PLC communication (S7-1500 and S7-400).

PUT/GET over ISO-on-TCP works reliably for this type of setup, especially when real-time performance isn't a strict requirement. It's often used when integrating S7-1500 as a data server for remote stations.