User's Manual

LX-80 User Manual
Page 16 of 32
5. Data Interface
Geolux LX-80 level meter offers multiple data interfaces, in order to make the
integration of the device with existing SCADA/telemetry systems easy.
5.1. Serial RS-232 interface
Serial RS-232 interface is used for direct connection of a single level meter unit
with the computer. The serial interface is used both for retrieving live level measurements
and for configuration of the level meter device. Geolux provides PC application for unit
configuration and level monitoring free of charge.
Default communication parameters are:
Bitrate: 115200 bps
Data bits: 8
Stop bits: 1
Parity: None
A NMEA-like communication protocol is used to deliver level measurements over
RS-232 interface. Detailed description of the protocol is given in the Chapter 6 of the
User Manual.
5.2. Serial RS-485 interface
Serial RS-485 interface is used for connecting multiple level meters to a single data
logger. RS-485 interface uses a different protocol then the protocol used over RS-232
interface, in order to allow multiple level meters connected on a single RS-485 bus. The
main difference from the protocol used over RS-232 interface is that the level
measurements are not reported automatically but are instead reported only after being
requested by the master device (data logger unit). LX-80 supports Modbus protocol over
RS-485 bus. Detailed description of the protocol is given in the Chapter 6 of this User
manual. da
Default communication parameters are:
Bitrate: 9600 bps
Data bits: 8
Stop bits: 1
Parity: Even