Safety Instructions

SYMEO LPR
®
LPR-1D
Product Documentation
Protocol Description Binary XP (1D messages)
Copyright © Symeo GmbH 2010
Page 73 of 87
If data is sent to the LPR
®
unit the data has to be packed in a fixed data length (i.e. 15 bytes
as for TCP fixed frame option). This data packet is sent as UDP packet to the LPR
®
unit. The
port number of the receiver is the same as for the PC.
In general bidirectional data communication is not recommended for UDP due to loosing
singular data packets.
7.4 Remarks
7.4.1 LPR
®
-B Address
LPR
®
-B station addresses are completely defined by a 16 bit value:
15 11 10 1 0
group ID BBstation ID
BB  Base station Bit:
Indicates, if the LPR
®
-B station is defined as a base station
or as a transponder (1=base station, 0=transponder)
group ID:
group ID of the station (1..1022)
station ID:
station ID of the station (0..30)
In multi cell applications, group ID is the cell ID of the cell.
7.4.2 Distance Error codes
The distance data contains an error field which indicates the status of the distance
measurement. The following errors can occur:
Value
Content
Source
Description
0x00
no error
Measurement valid
0x01
no peak detected
Base Station
No measurement signal
0x02
peak too low
Base Station
Measurement signal is imprecise
0x03
nothing received
Transponder
No measurement data received
0x04
implausible speed
Base Station
Velocity is to high
0x05
measurement botched
Base Station
Measurement is not feasible.
0x06
no occupying received
Master
Transponder
Measurement channel is not
reserved
0x07
no results received
Master
Transponder
No measurement data received
0x08
trigger
Transponder
Unit did not attend the measurement