Analog and Switch DAQ Products use Modbus RTU protocol.

Press Release Summary:



Control unit, DR9050, interfaces to Modbus RTU RS485 network and allows user's Modbus® Controller to access 1-247 remote units (DR9051), which are available with dual 4-20 mA inputs, RTD input, or strain gauge input. Each DR9051 also has 4 discrete inputs for monitoring switch status. RF connection can be 900 MHz or 2.4 GHz, where former provides communications over line of sight distances up to 20 miles. Both wireless RF systems use spread spectrum frequency hopping technology.



Original Press Release:



Wireless Analog and Switch Data Acquisition Products Offer Modbus® RTU Protocol with 1 to 247 Remote Units and Line of Sight Ranges to 20 Miles



One DR9050 control unit interfaces to a standard Modbus RTU RS485 network and allows the user's Modbus® Controller to access from 1 to 247 remote units. Each of the remote units use 1 of the 247 possible addresses allowed by Modbus® protocol.

The DR9051 remote unit is available with dual 4/20mA inputs, RTD input, or strain gauge input. The strain gauge input also provides 10V excitation for 4 bridges in parallel. Each DR9051 also has 4 discrete inputs for monitoring switch status.

The RF connection can be 900 MHz or 2.4 GHz. Both RF systems use spread spectrum frequency hopping technology which allows multiple systems in close proximity.

The 900 MHz RF link can provide reliable communications over line of sight distances to 20 miles.

For complete specifications and technical information, download the SensoRAD product literature and the RF Engineering Manual from www.wici.com.

These products are designed and manufactured by Wilkerson Instrument Co., Inc., 2915 Parkway Street, Lakeland, FL 33811. Tel 800 234 1343 - Fax 863 644 5318 - Email sales@wici.com

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