2 Installation2.8 Connect field bus36 Gateway XN-312-GW-CAN 06/16 MN050003-EN www.eaton.eu2.8 Connect field busCANopenFigure 22: Connection of CANopenThe following CAN bus cable is recommended in line with the requirementsin ISO 11898:• UNITRONIC bus LD, Messrs. LAPPKABEL• 2 x 2 x 0.22 mm²• Surge impedance: 100 – 120 Ohm• Effective capacitance: 800 Hz, max. 60 nF/kmTo connect the CANopen field bus, follow the steps below:▶ Insert the CAN bus cable's wires into the push-in terminals on the three-pin FMC 1.5/3-ST-3.5 contact plug.▶ Connect the contact plug to the X1 field bus interface on the gateway.▶ You can use the X2 field bus interface on the gateway to connect addi-tional field bus modules.2.8.1 Maximum cable lengthThe maximum cable length for a CAN bus cable depends on the baud ratebeing used. The following table provides an overview of the possible Baudrates and the corresponding maximum cable lengths:Table 2: Max. cable lengthsGW GWCANSTI/OON OFFUSBS1X1HADDRBRSTLGHLGX2Baud rate (kBaud) Maximum cable length (m)10 500020 250050 1000
