L-Proxy User Manual
11
LOYTEC
Version 3.1
LOYTEC electronics GmbH
1 Introduction
1.1 Overview
The L-Proxy is a high performance network infrastructure component for CEA-709
networks. It is the first device that allows network variable bindings across multiple
domains, SNVT translation, address table expansion for CEA-709 nodes, firewall security
etc. The L-Proxy provides
five
communication ports and it translates packets between
these ports. Available ports are two FT ports, and three IP-852 ports. The three IP-852
ports are connecting to an IP-852 backbone channel. The L-Proxy’s unique architecture
very much supports well defined interfaces between various subsystems like HVAC,
lighting, and security in a typical building. Easy to understand diagnostic LEDs allow
installers and system integrators to install and troubleshoot this device without expert
knowledge and dedicated troubleshooting tools.
The basic operation of L-Proxy is to take an input network variable (NV) or configuration
property (CP) on one side, interpret the data in the variable and transmit a corresponding
output network variable on the other side. This concept is used to solve a great amount of
today’s communication problems in CEA-709 networks as explained in the following
chapters. The device is fully compliant with ANSI/CEA-709, and ANSI/CEA-852-A,
EN 14908.
Network variables (NVs) in the CEA-709 network can also be operated as “external NVs”.
External NVs are polled or explicitly written to without allocating static or dynamic NVs
on the L-Proxy. In this case, address information is supplied by the configuration software
by importing e.g., a CSV file. User-defined network variable types (UNVTs) can be used
as dynamic or external NVs. Configuration properties (CPs) on other devices can be
accessed through file transfer. To transfer CPs, the device supports both the L
ON
M
ARK
file
transfer and the read memory access method. For CPs, the standard SCPTs and user-
defined UCPTs are supported.
L-Proxy is configured over the network with an easy-to-use configuration tool. This
configuration tool can be used as a plug-in for LNS-based network installation tools or as a
standalone tool.
The built-in Web server allows convenient device configuration through a standard Web
browser such as the Internet Explorer or Firefox. The Web interface also provides statistics
information for system installation and network troubleshooting.
The L-Proxy is used for:
•
Binding of network variables (NVs) across multiple domains (up to 5 with a single
device),
•
mapping configuration properties (CPs) to network variables (NVs),
Summary of Contents for L-Proxy
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