ELPRO 505U-K
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The 505U-K has an internal 869MHz radio transmitter which operates on a license-free radio band in Europe. The 505U-K has an operating range of up to 5km. It is suitable for monitoring in utility industries such as electricity, water and gas; and is also a cost effective solution for short range applications in factories and plants.
Mode of Operation
The 505U-K is compatible with the 105U/869 range of wireless I/O products* - 105U units may be used to output the process signals, or act as a wireless interface connected to a PLC, DCS or PC. The 505U-K transmits the value of its input signals whenever the signal changes, or after a pre-configured update time. Each transmission message includes error-checking to confirm the validity of the message. The 505U-K can be configured to repeat the transmission several times to ensure that the transmission is received correctly. The input signal is output at a 905U unit either as an identical signal or across a serial data link (RS232 or RS485).
905U units may also be used as repeaters to extend the radio range of the 505U-K - up to five intermediate 905U modules may be used as repeaters in any radio path.
More than 10 000 505U-K units may operate together in a single system.