The Lon Protocol; Hardware And Software Modules - ABB RELION 670 Series Commissioning Manual

Section 7
Establishing connection and verifying the LON communication
Table 10:
Cable connector
Cable diameter
Max. cable length
Wavelength
Transmitted power
Receiver sensitivity
7.1.2

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.
7.1.3

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 fibers 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.
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
Yes . The node address is sent to LNT via the LON bus, or LNT can scan the network for new nodes.
54
Specification of the fiber optic connectors
Glass fiber
ST-connector
62.5/125 m
1000 m
820-900 nm
-13 dBm (HFBR-1414)
-24 dBm (HFBR-2412)
The HV Control 670 software module and 670 series Object Type files are used with
both 650 and 670 series IEDs.
Plastic fiber
snap-in connector
1 mm
10 m
660 nm
-13 dBm (HFBR-1521)
-20 dBm (HFBR-2521)
Commissioning manual
1MRK 511 366-UUS A
M14804-32 v2
M14804-35 v4
ServicePinMsg =