Industrial Data Communication Experts DATA-LINC GROUP Factoria Blvd SE Suite 100 Bellevue, WA Phone: (425) Fax: (425) GE FANUC Redundant Wireless Data Communication Systems

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

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

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

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

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

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

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

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

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

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

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

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

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

15 Radio Modem Redundancy n Modem activation methods u PLC program controls modem power F Apply power to the appropriate modem

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

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

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

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

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

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

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

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

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

25 The Industrial Data Communication Experts DATA-LINC GROUP 3535 Factoria Blvd SE Suite 100 Bellevue, WA Phone: (425) Fax: (425) GE FANUC