ConnectorsNoticeRisk of confusion: supply voltages and EtherCATDefect possible through incorrect insertion.Observe the color coding of the connectors: black: Supply voltages green: EtherCATConnectors for supply voltagesM8 connectorContactFunctionDescriptionCore color 1)1 US Control voltage Brown 2 UP Peripheral voltage White 3 GNDS GND to US Blue 4 GNDP GND to UP Black 1) The core colors apply to cables of the type: Beckhoff ZK2020-3xxx-xxxx