L-INX/L-GATE User Manual
9
LOYTEC
LOYTEC electronics GmbH
1 Introduction
1.1 Overview
The L-INX product family consists of high performance, reliable and secure network
infrastructure components that implement an embedded automation server. The different
models of the L-INX family contain a number of components and network technologies. As
protocols on the control network side, the L-INX implements access to BACnet, CEA-709,
KNX, Modbus, and M-Bus. The BACnet models are BTL-certified B-BC devices.
The L-GATE product family is intended for use as universal gateways. They provide a
similar user interface and set of protocols as the L-INX family. The L-GATE provides data
access to a defined set of data points, which are mapped from one control network technology
to another control network technology. In particular, the CEA-709/BACnet Gateway
(LGATE-902) implements mappings between a set of CEA-709 network variables (NVs)
and a set of standard BACnet server objects. Which NVs are mapped to BACnet objects can
be configured by an LNS plug-in or stand-alone configuration software. The LGATE-902 is
equipped with a 100-BaseT Ethernet port (IP), an FT-10 port (CEA-709), and an RS-485 port
(MS/TP). The device is fully compliant with ANSI/CEA-709 and ENV14908,
ANSI/ASHRAE-135-2004 and ISO 16484. The LGATE-95X extends the 902 model with a
number of additional protocol ports and supports more data points for the gateway.
Data from the supported network technologies are available as data points in the automation
server. Those data points are freely configurable via configuration software, which provides
a fast and easy way to configure the L-INX and L-GATE using online network scans,
import/export features or device templates. Data points between different network
technologies can be connected to each other for data transfer between those network
technologies (gateway). Data points are also subject to alarming, trending and scheduling
(AST) functions of the automation server. The usage of math objects allows basic
calculations and the built-in E-mail client allows the L-INX and L-GATE to transmit e-mails
on certain conditions. Generated alarms can be configured to send e-mails to predefined
addresses. Alarms can also be stored in a historical
alarm log.
Trended data collected by the
device and is available in CSV format and through a dedicated Web service.
An embedded OPC server exposes a defined set of data points as OPC tags. It implements
the OPC XML-DA standard OPC XML-DA 1.01, which lets OPC clients access the data
points via Web services. For secure OPC communication some L-INX models add an OPC
UA server. Which native data points are exposed to OPC can also be configured by the
configuration software. AST objects such as schedules are exposed as a set of OPC tags.
Using the supplied L-WEB designer, users can easily generate a Web-based visualization for
the L-INX.
Only the L-INX family contains a freely programmable controller that can operate on all
L-INX data points. The controller application is developed using the provided IEC-61131
compliant design tool.