ABB RELION 650 SERIES, Technical Manual

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messages, such as measuring values, status information, and interlocking/blocking
signals. Explicit messages are used to transfer longer pieces of information, such as
events and explicit read and write messages to access device data.
The benefits achieved from using the LON bus in protection and control systems
include direct communication among all terminals in the system and support for
multi-master implementations. The LON bus also has an open concept, so that the
terminals can communicate with external devices using the same standard of
network variables.
Introduction of LON protocol
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For more information, refer to LON bus, LonWorks Network in Protection and
Control, User’s manual and Technical description.
LON protocol
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Configuration of LON
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LON network tool (LNT) is a multi-purpose tool for LonWorks network
configuration. All the functions required for setting up and configuring a
LonWorks network, is easily accessible on a single tool program.
Activate LON Communication
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Activate LON communication in the Parameter Setting tool under Main Menu/
Configuration/Communication/Station communication/ LON/HORZCOMM:
1
, where Operation must be set to ON .
Add LON Device Types LNT
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A new device is added to LON Network Tool from the Device menu or by
installing the device from the ABB LON Device Types package for LNT 505 using
SLDT package version 1p2 r04.
LON net address
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To establish a LON connection, the IED has to be given a unique net address. The
net address consists of a subnet and node number. This is accomplished with the
LON Network Tool by creating one device for each IED.
Vertical communication
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Vertical communication describes communication between the monitoring devices
and protection and control IEDs. This communication includes sending of changed
process data to monitoring devices as events and transfer of commands, parameter
data and disturbance recorder files. This communication is implemented using
explicit messages.
Events and indications
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Events are sent to the monitoring devices using explicit messages (message code
44H) with unacknowledged transport service of the LonTalk protocol. When a
signal is changed in the IED, one message with the value, quality and time is
transmitted from terminal.
Binary events
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Section 17
1MRK 506 382-UEN A
Station communication
712 Line distance protection REL650 2.2 IEC
Technical manual