Glass fibre Plastic fibre
Wavelength 820-900 nm 660 nm
Transmitted power -13 dBm (HFBR-1414) -13 dBm (HFBR-1521)
Receiver sensitivity -24 dBm (HFBR-2412) -20 dBm (HFBR-2521)
The LON Protocol
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 communicate with each other directly. For more information of the bay-to-bay
communication, refer to the section Multiple command function.
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 the MicroSCADA with
Classic Monitor, application library LIB520 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 in MicroSCADA
applications.
The HV Control 670 software module is used for control functions in the IEDs. The
module contains a process picture, dialogues and a tool to generate a process database
for the control application in MicroSCADA.
When using MicroSCADA Monitor Pro instead of the Classic Monitor, SA LIB is
used together with 670 series Object Type files.
The HV Control 670 software module and 670 series Object Type
files are used with both 650 and 670 series IEDs.
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.
1MRK 502 071-UEN - Section 20
Station communication
Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062 699
Application manual
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