Hardware And Software Modules - ABB RET670 Installation And Commissioning Manual

1MRK 504 088-UEN C
10.2.2
Installation and commissioning manual
Establishing connection and verifying the LON communication

Hardware and software modules

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 IEDs. To interface the IEDs from
MicroSCADA, the application library LIB670 is required.
The HV Control 670 software module is included in the LIB520 high-voltage
process package, which is a part of the Application Software Library within
MicroSCADA applications.
The HV Control 670 software module is used for control functions in IEDs in the
670 series. This module contains the process picture, dialogues and a tool to
generate the process database for the control application in MicroSCADA.
Use the LON Network Tool (LNT) to set the LON communication. This is a
software tool applied as one node on the LON bus. To communicate via LON, the
IEDs need to know
• The node addresses of the other connected IEDs.
• The network variable selectors to be used.
This is organized by LNT.
The node address is transferred to LNT via the local HMI by setting the parameter
ServicePinMsg = Yes. The node address is sent to LNT via the LON bus, or LNT
can scan the network for new nodes.
The communication speed of the LON bus is set to the default of 1.25 Mbit/s. This
can be changed by LNT.
The setting parameters for the LON communication are set via the local HMI.
Refer to the technical reference manual for setting parameters specifications.
The path to LON settings in the local HMI is Main menu/Settings/General
settings/Communication/SLM configuration/Rear optical LON port
If the LON communication from the IED stops, caused by setting of illegal
communication parameters (outside the setting range) or by another disturbance, it
is possible to reset the LON port of the IED.
By setting the parameter LONDefault = Yes, the LON communication is reset in
the IED, and the addressing procedure can start from the beginning again.
Path in the local HMI under Main menu/Settings/General settings/
Communication/SLM configuration/Rear optical LON port
These parameters can only be set with the LON Network Tool (LNT).
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