D-sub connector, 9-pole, pin, two cable entries less than 35 °, bus system: MODBUS, MODBUS PLUS, BITBUS, ARCNET, MULT / Mininet (B & R) System 2003 (B & R), P-Net, pin assignment: 1, 2, 3, 5, 6, 8 over two thread for each connection terminals. Phoenix Contact.