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center. The Service Center is connected with the SINEMA RC server via LAN and can be
reached in this way.
To manage the tunnel connection, the SCALANCE M804PB device and a user for the service
technician are created on the SINEMA RC server.
The service technician and the SCALANCE M804PB device establish a separate connection to
the SINEMA RC. This is the SCALANCE M804PB via the "SINEMA RC" function and the service
technician via the SINEMA RC client.
The communication connection of the two TIA Portal Cloud Connectors (client and server)
goes through the VPN tunnel connection and is secured in this way.
Through this secure communication connection, the service technician accesses the
connected S7 automation system via the programming software and reads out the diagnostic
buffer.
The communication connection is established as follows:
Station 1
① SCALANCE M804PB automatically establishes a VPN tunnel to the SINEMA RC server at the
service center. The active TIA Portal Cloud Connector (Server) is waiting for a connection.
Service technician
Cloud Connector
Getting Started, 07/2020, C79000-G8976-C507-03
PROFIBUS connection
2.2 Remote service
21
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