Tuesday, May 13, 2014

Process Data exchange – IEC 61850, DNP3, IEC 60870-5-104, and Portal Solution

The discussion about communication mechanisms and how to get access to the most crucial information is going on. It seems to be clear that there are different requirements for different applications that need to exchange information with a specific IED (at any hierarchy level). There is not a single size that fits all. Modern IEDs will support multiple protocols to support various needs.

One mechanism is using a cloud server – often called a Portal. A simple and beautiful solution is provided by the com.tom (communication to machines) IEDs offered by Beck IPC:


See: http://com-tom.de/about.php 

The com.tom IEDs are supporting multiple protocols like IEC 61850, IEC 60870-5-104, Modbus, DNP3, … and a Portal. See the following figure for some details (it shows the web browser connected to the web server at the com.tom):


The Input and Output signals (including those configured with IEC 61850!!) will automatically be made available at the Portal as soon as the com.tom is online (trough a router: by Ethernet, WiFi, GPRS, UMTS, …):


The Logical Device “PQSrvLDPQ” is visible in the Web Browser (first figure), on the Portal (second figure), in the IEDScout (see next figure), and in IEC 60870-5-104 (last figure):


The values are also accessible through IEC 60870-5-104 through a binding of the process values (coming trough Modbus) to 104 messages (configured by the WEB PLC on the com.tom):


The different possibilities serve various needs.

It is quite interesting to see such a simple IED supporting these many possibilities – even supporting security (openVPN, firewall, …).

More to come.

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