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Industrial Data Communication Experts

GE FANUC. Redundant Wireless Data Communication Systems. www.data-linc.com DATA-LINC GROUP 33535 Factoria Blvd SE Suite 100 Bellevue, WA 98006 Phone: (425) 882-2206 Fax: (425) 867-0865 Email: info@data-linc.com. Industrial Data Communication Experts. DATA-LINC Overview.

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Industrial Data Communication Experts

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  1. GE FANUC Redundant Wireless Data Communication Systems www.data-linc.com DATA-LINC GROUP 33535 Factoria Blvd SE Suite 100 Bellevue, WA 98006 Phone: (425) 882-2206 Fax: (425) 867-0865 Email: info@data-linc.com Industrial Data Communication Experts

  2. DATA-LINC Overview • GE Fanuc Accompany Partner • Manufacturer of communication solutions for industrial markets • Broad line of solutions (private RF, dial-up/leased line, dedicated wire & fiber optics) • Factory pre-configuration prior to shipping • On-site GE PLCs for testing & support

  3. Wireless Technology • Why consider wireless? • Cable installation/maintenance is expensive (ROI) • Cable installation is impossible • Moving/spinning platforms • Remote locations • Phone company reliability is questionable • RF back-up to a wired system

  4. Wireless Technology Smart Spectrum • Designed for industrial applications • Spread spectrum (no FCC/DOC site license) • 902-928 MHz or 2.4 GHz band • Advanced frequency hopping techniques • Field proven predictable performance in high interference and harsh environments • Range to 20 miles without repeaters

  5. Wireless Technology • Tolerant of multi-path reflections for indoor applications • Supports 15 separate systems in the same location (ideal for redundancy) • Provides automatic modem linking • Back-up modem connects without intervention

  6. Wireless Technology • Radio modems for SNP, CCM, Modbus ASCII/RTU (SRM6000) and Ethernet (SRM6200E) • Non-deterministic by nature (10-30 msec latency-varies based on interference level) • Ideal for 90-30 & 90-70 PLC SCADA, remote diagnostics/programming and control applications

  7. Multi-point Wireless PLC Example GE 90-30/70 PLC GE 90-30/70 PLC GE 90-30/70 PLC Serial or Ethernet interface DATA -LINC RADIO MODEM Slave Slave PLC Serial or Ethernet interface DATA -LINC RADIO MODEM Master Master PLC or PC DATA -LINC RADIO MODEM Slave Slave PLC Range of 20 miles with line-of-sight antenna placement

  8. Wireless as a Back-up • Radio modems may be used to back-up a hard wired system • Provides insurance in case of cable damage

  9. Wireless Back-up of PLC Communications GE 90-30/70 PLC GE 90-30/70 PLC Copper or Fiber Cable DATA -LINC SRM6000 RADIO MODEM DATA -LINC SRM6000 RADIO MODEM Master Slave Slave PLC Master PLC or PC Normal Operation

  10. Wireless Back-up of PLC Communications GE 90-30/70 PLC GE 90-30/70 PLC Cable break Copper or Fiber Cable DATA -LINC SRM6000 RADIO MODEM DATA -LINC SRM6000 RADIO MODEM Master Slave Slave PLC Master PLC or PC Back-up Mode Over RF Link

  11. Radio Modem Redundancy • Most common radio modem failures: • Lightning hit on/near antenna • Static electricity build-up on antenna • Surge from power source • Ground loop surges via interface cable • Redundancy should take into account these causes

  12. Common Causes of Communications Failure Lightning Hit PLC Antenna DATA Interface RF Static Build-up Ground Loop Lightning Arrestor Radio Modem DC Power Source Power Surge Earth Ground

  13. Radio Modem Redundancy • Ideal radio modem redundancy • Separate primary/secondary radio modems • Separate antennas with masts at least 50 feet apart • Separate power sources • Optical isolation on data interfaces (especially on long cable runs)

  14. Ideal Radio Modem Redundancy DC Power (Primary) Redundant GE PLC Radio Modem (Primary) Lightning Arrestor Primary Optical isolation Secondary Radio Modem (Secondary) DC Power (Secondary) Lightning Arrestor

  15. Radio Modem Redundancy • Modem activation methods • PLC program controls modem power • Apply power to the appropriate modem

  16. Redundant Slave with Power Switching GE 90-30/70 PLC GE 90-30/70 PLC Redundant GE PLC DATA -LINC RADIO MODEM Slave Slave PLC DATA -LINC RADIO MODEM Power On Master Master PLC or PC DATA -LINC RADIO MODEM Primary Active Primary Primary Secondary DATA -LINC RADIO MODEM Secondary Power Off

  17. PLC System with Redundant Slave GE 90-30/70 PLC GE 90-30/70 PLC Redundant GE PLC DATA -LINC RADIO MODEM Secondary DATA -LINC RADIO MODEM Slave Slave PLC DATA -LINC RADIO MODEM Power Off Master Master PLC or PC DATA -LINC RADIO MODEM Primary Primary Secondary Secondary Active Power On

  18. Radio Modem Redundancy • Modem activation methods (continued) • All slave modems active • Master PLC/PC must poll appropriate slave PLC • Only one slave PLC may respond at a time

  19. PLC System with Redundant Slaves Redundant GE PLC Redundant GE PLC DATA -LINC RADIO MODEM Primary Primary Slave Secondary DATA -LINC RADIO MODEM DATA -LINC RADIO MODEM Master Secondary Slave HMI or Programming Station DATA -LINC RADIO MODEM Primary Primary Slave All Slaves Active Secondary DATA -LINC RADIO MODEM Secondary Slave

  20. Radio Modem Redundancy • Modem activation methods (continued) • Combination master & slave • Master selected by power • All slaves active

  21. PLC System with Redundant Master & Slave Redundant GE PLC Redundant GE PLC Redundant GE PLC Primary Secondary DATA -LINC RADIO MODEM Primary Primary Slave Power On Secondary DATA -LINC RADIO MODEM DATA -LINC RADIO MODEM Secondary Slave Primary Master Power Off DATA -LINC RADIO MODEM DATA -LINC RADIO MODEM Primary Secondary Master Primary Slave Primary Master Active Secondary DATA -LINC RADIO MODEM Secondary Slave

  22. PLC System with Redundant Master & Slave Redundant GE PLC Redundant GE PLC Redundant GE PLC Primary Secondary DATA -LINC RADIO MODEM Primary Primary Slave Power Off Secondary DATA -LINC RADIO MODEM DATA -LINC RADIO MODEM Secondary Slave Primary Master Power On DATA -LINC RADIO MODEM DATA -LINC RADIO MODEM Primary Secondary Master Primary Slave Secondary Master Active Secondary DATA -LINC RADIO MODEM Secondary Slave

  23. Summary • RF may be an effective back-up to copper or fiber optic cable • Smart Spectrum ideal for redundant PLC applications • Linking technique provides automatic modem synchronization • 15 separate systems may operate in same area

  24. Summary • Future DATA-LINC Product Innovations • The SRM6000 & SRM6200E are intelligent micro-processor controlled modems • Modem features can be added via firmware program changes • What are your requirements?

  25. GE FANUC The Industrial Data Communication Experts DATA-LINC GROUP 3535 Factoria Blvd SE Suite 100 Bellevue, WA 98006 Phone: (425) 882-2206 Fax: (425) 867-0865 Email: info@data-linc.com www.data-linc.com

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