Safety Instructions

SYMEO LPR
®
LPR-1D
Product Documentation
System Description
Copyright © Symeo GmbH 2010
Page 12 of 87
2.3 System Configuration
The LPR
®
1D system consists of two, three, four or five LPR
®
units. Each of these units can
be configured either as a transponder or as a base station. A system consists of exactly one
LPR
®
unit configured as a transponder and between one and four LPR
®
units configured as
base stations.
For pure 1D distance measurement two units are required and are arranged as shown in
Figure 3. The distance information is available at both stations.
Base Station
(Station 2)
Distance Measurement
Data Transmission (Distances,
User data, etc.)
Data out, i.e.
PC or PLC
Data in
Data in
LPR 1DX System
Transponder
(Station 1)
Data out, i.e.
PC or PLC
Allocate a Time Slot for
Distance Measurement
Figure 3: 1D system
Besides the distance information, smaller volumes of user data can also be passed between
the units. These are fed in on the serial port of a unit and output in corresponding manner on
the other side.
Each unit consists of a basic unit, corresponding antenna cable, antenna, as well as power
supply and ports.
Further options for arranging LPR
®
units are described in the section 2.6 "Application
Examples".
2.4 System Design
Each LPR
®
1D station has parameters to provide an explicit allocation to a system and also
to ensure the functionality of a system. These parameters are explained in the following:
2.4.1 Station-ID (SID)
Each station has an explicit Identification Number in one system. If using more than one
LPR
®
1D systems in your environment same station numbers could be used. BUT: In one
system all station numbers are different.
A system consists at least of 2 stations, at most of 5 stations. The first station has the station
number 1 (SID 1), die second station has the station number 2 (SID 2), etc.
Station 1 (SID 1) is the LPR
®
Transponder, also known as the coordinator of the system.
Stations 2  5 (SID 2-5) are LPR
®
Base Stations. A transponder (SID 1) can only measure
with a base station (SID 2  SID 5) and vice versa, but NEVER with another transponder or
a base station with another base station. But the transponder (coordinator) can measure with
up to 4 base stations.
Keep in mind: