Industrial Data Communication Experts Redundant Wireless Data Communication

Industrial Data Communication Experts 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 GE FANUC

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

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

Wireless Technology Smart Spectrum n Designed for industrial applications n Spread spectrum (no FCC/DOC site license) u 902 -928 MHz or 2. 4 GHz band Advanced frequency hopping techniques n Field proven predictable performance in high interference and harsh environments n Range to 20 miles without repeaters n 4

Wireless Technology 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 n 5

Wireless Technology Radio modems for SNP, CCM, Modbus ASCII/RTU (SRM 6000) and Ethernet (SRM 6200 E) n Non-deterministic by nature (10 -30 msec latency-varies based on interference level) n Ideal for 90 -30 & 90 -70 PLC SCADA, remote diagnostics/programming and control applications n 6

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

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

Wireless Back-up of PLC Communications Copper or Fiber Cable GE 90 -30/70 PLC DATA -LINC SRM 6000 RADIO MODEM Slave PLC DATA -LINC SRM 6000 RADIO MODEM GE 90 -30/70 PLC Master PLC or PC Normal Operation 9

Wireless Back-up of PLC Communications Cable break Copper or Fiber Cable GE 90 -30/70 PLC DATA -LINC SRM 6000 RADIO MODEM Slave DATA -LINC SRM 6000 RADIO MODEM GE 90 -30/70 PLC Master Slave PLC Master PLC or PC Back-up Mode Over RF Link 10

Radio Modem Redundancy 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 n 11

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

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) 13

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

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

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

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

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

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

Radio Modem Redundancy n Modem activation methods (continued) u. Combination master & slave FMaster selected by power FAll slaves active 20

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

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

Summary 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 n 23

Summary n Future DATA-LINC Product Innovations u. The SRM 6000 & SRM 6200 E are intelligent micro-processor controlled modems u. Modem features can be added via firmware program changes u. What are your requirements? 24

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 25 GE FANUC