From all the articles on "fieldbuses", that is - Profibus, DeviceNet, CAN, ModBus, and others, one would think that these busses dominate. NOT TRUE! Good old RS-232 and RS-485 are still used in over 75% of process control networks.To connect and protect devices on RS-485, Dataforth offers a fully isolated DIN rail converter / line driver, our DCP485. Dataforth's compact DIN package features a complete electrical isolation barrier and heavy-duty surge protectors rated to 1500Vrms (continuous) isolation, 6000 VDC (1 minute) surge and inherent 15KV ESD protection.Links:DCP485 SelectionDCP485 (PDF) specification sheetPlease feel free to contact our applications engineers at support@dataforth.com should you need any product selection assistance. The DCP485 series provides many benefits over older designs: Operates at the signal level No addresses to set or program Transparent to software and operating system Data rates of 0 to 115.2K baud (bits per second) Full duplex operation over two wire pairs Four diagnostic LED indicators May be powered from +10 to +30 VDC Connections are made through pluggable screw terminals You may multidrop up to 32 units Provides RTS, DTR, or Auto RS-485 transmitter control Operation over -40C to +60C temperature range MTBF exceeds 100,000 hours Block diagram / instructions on the nameplate Competitively priced (call factory for details)