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The function blocks cyclically communicate with the IE/WSN-PA Link via Modbus TCP/IP. Process values of WirelessHART devices as well as their status are read and made available at the building block outputs. Furthermore, selected status information of the IE/WSN-PA Link is also made available at another building block. This information includes connection status, condition of the wireless network and other diagnostics.
Precondition of the usage of these communication blocks is a TCP/IP connection, engineered in NetPro in the Engineering Station of Simatic PCS 7. Currently this requires a CP343 or a CP443-1.