Overview
The ELPRO 805U is a high-speed industrial radio modem designed for wireless communication using RS232 or RS485 connections. It serves as a cost-effective solution for connecting PLCs, data loggers, supervisory computers, and intelligent transducers. The modem operates on a licence-free 868MHz radio band, making it suitable for use in most European countries.

Key Features

• Radio data rate up to 76,800 bits/sec and RS232/RS485 up to 115,200 bits/sec.
• Single hop distance of 5 km line-of-sight, with repeater function for extended range.
• Forward error correction and CRC error checking with ARQ.
• Configurable via Hayes AT commands or Windows software.
• Supports transparent broadcast mode, peer-to-peer, addressed mode, multipoint, and point-to-point communication.
• Low power mode with DTR control and on-line dial-up control using AT commands.
• Security features to prevent cross-talk between systems.

Power Supply

• Operates on 10-30 VDC or 10-24 VAC.
• Normal current drain is 70mA/12VDC or 50mA/24VDC, with higher consumption during transmission.
• Low power mode reduces current drain significantly.

General Specifications

• Environmental tolerance from -40 to 60°C and 0 to 99% RH.
• EMC compliant with ETS 300 683 standards.
• Housed in a durable aluminium case with DIN rail mounting.
• LED indicators for operational status.

Serial Port

• Supports data rates from 1200 to 115200 baud.
• RS232 and RS485 interfaces with asynchronous NRZ format.
• Full duplex operation for RS232 and half duplex for RS485.
• Input and output buffers of 2Kbyte.

Radio Transceiver

• Single channel, synthesised transceiver operating between 869.4 - 869.65 MHz.
• Transmit power of 500mW with an expected range of 5 km at 19200 bits/sec.
• RF data transmission rates of 19200, 38400, and 76800 baud.
• Range extension possible with repeaters.
• Conforms to EN 300 220 standards.

Data Transmission

• Transparent mode allows data transmission with system and group addresses.
• Controlled mode includes error checking and acknowledgment features.
• Auto-connect and dial-up-control modes available.
• CTS/RTS flow control based on buffer availability.

Configuration and Diagnostics

• Configurable via freeware software or Hayes AT commands.
• Includes diagnostics for radio noise, signal strength, and bit error rate (BER).

Contact Information
Elpro Technologies, 9/12 Billabong Street, Stafford, Qld 4053, Australia. Telephone: +61 7 3352 4533, Facsimile: +61 7 3352 4577, Email: [email protected], Website: www.elpro.com.au

Certification
ISO 9001 Certified. Specifications are subject to change without notice.