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Modbus Link

Modbus Link. Advantages Sutron's SDI/MODBUS Wireless Sensor Networks. Sites where wiring is not practical (across a river, on rotating spindle etc). Avoids expensive wiring, conduits, installation and maintenance. Makes system easily scalable (add more sensors)

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Modbus Link

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  1. Modbus Link

  2. Advantages Sutron's SDI/MODBUS Wireless Sensor Networks • Sites where wiring is not practical (across a river, on rotating spindle etc). • Avoids expensive wiring, conduits, installation and maintenance. • Makes system easily scalable (add more sensors) • Less susceptible to vandalism. • Highly reliable, scalable, secure, robust, cost effective • Multiple sensor types • Complex data processing/analysis available w/9210 Master

  3. Key Technical Specifications • Operating Frequency: 2.4 Ghz • Network type: Ad-hoc homogenous mesh • Range: 300m per hop • Latency: 1s per hop • Power Consumption: 450 µA @ 3.6v (average) • Internal Battery: 19Ah Lithium D-cell • External Power: 8-16v dc • Operating Temp: -40C to +60C • Enclosure: NEMA rated (4.72”x 3.15” x 2.17”) • Protocol : Modbus RTU • Interfaces: RS-232, RS-485

  4. ModbusLink Features (RF/Hardware) • 2.4 GHz license free radio band. • Extremely low power (~5 years with included Lithium battery) • NEMA enclosure for external mounting • LEDs FOR Status, RF, error indications • Supports Modbus (RTU mode) over RS232/RS-485 • RP-SMA connector for higher gain antennas (increased range) • External 8-16v power input • Optional power input via Pin-9 of RS232 port

  5. Compatible Equipment • ModbusLink-M • 9210 Data Logger via available RS232 or RS485 port • 8310 Data Logger via available RS232 or RS485 port (version TBD) • PLC or PC with serial port • ModbusLink-S • Sutron Radar Level Sensor – RLR-0003-1 • Constant Flow Bubbler – 56-0133-25, 56-0134 • Stage Discharge Recorder (SDR) - SDR-0001-1 • Submersible Pressure Sensor INW-PT12 • Any Modbus Sensor with RS232 or RS485, up to 57600 baud.

  6. Installation Configurations Simple Installation with 1 Master & 1 Slave

  7. Sample Installation Configurations

  8. Installation Configurations

  9. ModbusLink – Network Features • All nodes are capable of routing messages while remaining in low power mode • Multiple ModbusLink networks can co-exist without interference. • Ad-Hoc mesh network (Automatic route formation) • Most efficient route to destination will be used • Routes periodically refreshed to improve reliability • Dynamic route tables, no RF/memory overhead for maintaining unnecessary routes. • Robust - New routes discovered if intermediate routes fail • Simple Network commands to maintain/query Network status(Network Scan, Blink Remote LEDsetc) • Simple command line interface to configure network / Modbus parameters

  10. ModbusLink Antenna Internal Battery Modbus(RS485)/ Power LEDs Modbus (RS-232)/ Power

  11. Competitive Analysis Compare Sutron with Banner Engineering

  12. Future Support • Temperature measurement (Thermistor) • Extended range ( ~1 mile per hop) • Support SDI-12 Sensors • Digital IO

  13. St. Marys Dam, MD

  14. System Configuration • 1 x ModbusLink – Master • Sutron 9210 Datalogger • 8 x ModbusLink - Slaves • 8 x INW Pressure sensors (Water Level + temperature)

  15. Master Station ModbusLink Master

  16. Slave Station

  17. Thank You

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