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Serial communication, LON
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An optical network can be used within the Substation Automation system. This enables
communication with the terminal through the LON bus from the operator's workplace,
from the control center and also from other terminals.
LON-bus
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The LON protocol is specified in the LonTalkProtocol Specification Version 3 from
Echelon Corporation. This protocol is designed for communication in control networks
and is a peer-to-peer protocol where all the devices connected to the network can com-
municate with each other directly. For more information of the bay-to-bay communica-
tion, refer to the sections Event function and Multiple command function.
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The hardware needed for applying LON communication depends on the application,
but one very central unit needed is the LON Star Coupler and optical fibres connecting
the star coupler to the terminals. To communicate with the terminals from MicroSCA-
DA, the application library LIB 520 is needed.
The HV/Control and the HV/REx 500 software modules are included in the LIB 520
high-voltage process package, which is a part of the Application Software Library with-
in MicroSCADA applications.
Control Center
Micro SCADA
LIB 520
Gateway
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