September 2011
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V1.44
Copyright © 2011 Adept Systems, Inc. and Control Network Solutions Ltd All Rights Reserved.
of the operating parameters of the eNodeIV device. Configuration servers mostly manage the
device's channel. The channel is made up of other devices to which the eNodeIV device will
tunnel or send ANSI/EIA 709.1 data. In Normal mode the adding and deleting of devices is
managed exclusively by the assigned configuration server. The configuration server provides a
single interface to add and delete devices. Finally, Normal mode permits read access to
information by other devices and write access to information for the assigned configuration
server.
Note: Echelon’s LNS based VNI interface (LonMaker) only works in Normal mode. In order for a
eNodeIV device to communicate directly over an IP channel to a VNI interface requires that the
eNodeIV device be in Normal mode.
1.4. Applications of the eNodeIV Device
1.4.1. Multi-site building automation networks
The interfaces described here provide the management necessary for the ANSI/EIA 852 to
tunnel ANSI/EIA 709.1 packets successfully over IP. This ability provides wide area network
(WAN) support to ANSI/EIA 709.1 networks. This allows multi-building or multi-site connection
of automation networks.
Fig.1.5: Multi-site building automation network with internet connectivity
1.4.2. IP backbones for LON traffic aggregation
Furthermore, since the IP networks can support much higher traffic capacity, eNodeIV devices
can also be used to aggregate 709.1 traffic from several LON channels over one IP channel. The
ability to aggregate larger traffic volumes allows several eNodeIV devices and other 709.1 to IP
routers to be used as network backbones for 709.1 networks.
