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IRIS-RS485 – Getting started
IRIS RS-485 is part of the IRIS product series and is developed for relaying data via radio from
RS-485 systems to other RS-485 systems or systems connected to other IRIS products. The IRIS
series contains several models that provide solutions to all kinds of applications. All IRIS models
can communicate with each other via radio - in pairs or in more complex radio networks.
IRIS-RS485 – Product description
IRIS-RS485 can be used with both RS-422 and RS-485 systems depending on the configuration.
The most common use of IRIS-RS485 is a pair of IRIS-RS485 that relays data between two RS-
485 systems. This is however not the only application where an IRIS-RS485 can be used. The
data can be directed to a PC via an IRIS-RS232 or an IRIS-USB, to a database on the Internet
via an IRIS-CUW or it can be used to control the outputs on an IRIS-IO. With functions like timers,
counters and text matching the IRIS-RS485 can be setup to fit many different applications.
Power
Getting started
Connect the serial interface (half duplex or full duplex, see picture below).
Connect the power supply. The polarity of the power does not matter.
Connect the signal ground pin.
If needed connect the termination jumper. (See IRIS-RS485-Manual for more information)
Place the IRIS-RS485 so that the antenna is not shielded.
Avoid metal plating close to and between the antennas.
Full duplex
IRIS RS-485
Half duplex
IRIS RS-485
Inside IRIS RS-485
Serial interface
Other
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RS-485 unit
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RS-485 unit
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Receiver termination
(120 ohm)
RS-485
Signal ground
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Table of Contents
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Summary of Contents for IRIS IRIS-RS485
- Page 1 485 systems. This is however not the only application where an IRIS-RS485 can be used. The data can be directed to a PC via an IRIS-RS232 or an IRIS-USB, to a database on the Internet via an IRIS-CUW or it can be used to control the outputs on an IRIS-IO. With functions like timers, counters and text matching the IRIS-RS485 can be setup to fit many different applications.
- Page 2 The radio channel is set to channel 1 (433.075 MHz) and the IRIS-RS485 is set to send and receive broadcast messages. All data sent to the serial interface on IRIS-RS485 will with this setup be sent as broadcast messages over the radio. A broadcast message can be received of all IRIS-modules on the same channel, regardless of model, that are set up to receive broadcast messages.
- Page 3 The LED of the transmitting IRIS unit indicates radio communication but the LED on the receiving IRIS unit does not. The radio connection is not working properly. · Check the radio link by moving the two IRIS units closer together and make sure that there is a free line of sight between them.
- Page 4 RS-485 Technical data Radio communication: Frequency: 433.050 - 434.775 MHz; 439.700 - 439.975 MHz Channel pattern: 25 kHz channel spacing 70 channels from 433.050 to 434.775 MHz (12 channels from 439.700 to 439.975 MHz for the Swedish market) Sensitivity: -112 dBm @ 50 ohm Modulation type: Bit rate: 4800 bit/s...
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