eShark HD-PLC LON EVK
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2.2
LON
LON is a control network defined by ISO/IEC 14908. It can use different
transport layers by implementing the identic upper layers of addressing, transac-
tion processing and representation of data. This is a unique feature for a control
network. Because HD-PLC is implementing an Ethernet-like transport, LON can
be adapted to use HD-PLC easily.
•
Neuron-ID
This is the physical address of a LON node. It is implemented by a 6 byte
array, comparable with the MAC address in Ethernet.
The neuron ID of a eShark box is derived from its Ethernet MAC ad-
dress, by replacing the leading 0x00 byte with a 0xFE, which defines
a virtual Neuron-ID. The LON stack for the BlueChip dedicated for
production use comes with an individual and unique neuron ID
.
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MIP
MIP means Microprocessor Interface Program and was a firmware for a
LON neuron chip to build a LON PC interface. Nowadays it stands more
for a LON interface on LON layer 5. So a MIP interface already address-
ing and transaction handling.
•
VNI
VNI stands for Virtual Network Interface. A VNI allows accessing a
LON network on layer, so all LON messages can be received and sent. It
is the most flexible solution and offering best performance. Echelon’s
IzoT is using a VNI interface to access the network.
2.3
HD-PLC LON
With ANSI/CTA 709.8 HD-PLC LON is already standardized in the U.S and
Europe will follow with EN 14908-8.
•
HD-PLC LON master functionality
Finally this is implemented in the EPOS firmware. The device which is
the HD-PLC Master provides the HD-PLC LON master functionality au-
tomatically. In HD-PLC LON terminal devices will send the HD-PLC
LON message using unicast addressing to the master, which will mul-
ticast the message back into the network.
2.4
IP addressing
To simplify the setup of the EVK, it uses fixed IP addresses in the 192.168.0.x
network, default IP address is 192.168.0.249. The PC used for the work with the
EVK needs to have 192.168.0.1 as IP address.