1 / 23

Modbus Link/Plus

Modbus Link/Plus. 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)

bryanjackson
Download Presentation

Modbus Link/Plus

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Modbus Link/Plus

  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: 1mile 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 • Status indicators: 3 LED (red/green/orange)

  4. Sensor Inputs • 3 independently switched 12v supplies • Programmable warmup for each supply • 24 bit ADC • Built in 2.5v precision reference • 2 x Single ended analog inputs (0-5v) • 3 x Differential Inputs • 2 x SDI Sensors • 1 x Frequency input • 1 x Digital Input (Rain Gauge)

  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. Network basics 3 4 G 2 6 5 Logger

  11. Network basics • 3 types of Network Route messages • Route Request (RREQ) • Route Response (RREP) • Route Error (RERR)

  12. Network basics 3 4 G 2 6 5 • Example Gateway -> 6 • G broadcast RREQ for addr 6 • 2,3,5 receive RREQ from G • 2,3,5 update route table (2->G …) • 2,3,5 rebroadcast RREQ • 4 receives RREQ from 2 & 3 • 4 Discards 2nd RREQ as hop cnt not less • 4 rebroadcasts RREQ

  13. Network basics 3 4 G 2 6 5 • 6 receives RREQ from 2 • Forward Route complete (Unicast) • Update Table (6->2----->G) • RREP to 2 (dest G) • 2 receives RREP, updates Table (2->6) • 2 fwds RREP to G Logger

  14. Network basics 3 4 M 2 6 5 Message Delivery • Route Formation Complete • Route Table (G) => 6,2,Sq#,HopCnt • Route Table(2) => 6,6,Sq#,HopCnt => G,G,Sq#, HpCnt • Route Table (6) => G,2,Sq#,HopCnt • Min RSSI threshold for reliability • Route’s refreshed every 48hrs

  15. Competitive Analysis Compare Sutron with Banner Engineering

  16. ModbusLinkPlus • 3 independently programmable switched 12v power supplies for sensors. • 2 X Single ended analog • 2.5v reference voltage for bridge sensors • 3 x Differential inputs • 1 SDI-12 Sensor • 2x Digital inputs (frequency, counter)

  17. Ordering Part # Description MBLINKPLUS-1 Wireless network node with I/O (transceiver with built-in SDI-12, Analog & Digital Inputs). No Enclosure MBLINKPLUS-1E Wireless network node with I/O (transceiver with built-in SDI-12, Analog & Digital Inputs) With NEMA Enclosure & internal battery 6661-1325-1 External antenna Kit(3dBi antenna, 20’ low loss cable, mounting kit)

  18. Future Support • Wireless Radar • Wireless Tipping bucket

  19. St. Marys Dam, MD

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

  21. Master Station ModbusLink Master

  22. Slave Station

  23. Thank You

More Related