... 12M, profibus standard, DB9-F interface,DIN Rail 2.support redundancy dual networks system,for SIEMENS Profibus DP ... is Profibus protocol fieldbus fiber optic repeaters, support PROFIBUS DP fieldbus, independent dual bus electrical interface ... Rail installation.[Specifications]Electrical Interface:Ø 9-pin Sub_D, socket connector, definition of pins conform to Profibus DP protocol standard.Ø Support ...