... J2284 stard fieldbus etc.Independent dual bus electric interface 2 fiber interfaces, with redundancy dual-bus structure fiber optic redundancy ring ... ST optional, SC preferable.Power and ProtectionØ Power: dual-power redundancy input, DC(9-36)V, typical DC24V, power consumption ... portsTwo independent standard can interface, two optical interface, DIP switch set the rate, use for chain, star, ring, ...