INCON-M84/M86/M86R Integration Manual2 Modules Connection2.3 ESU: Servo/Spindle driver interface unit 2.3.2 IN, OUT: EtherCAT Ethernet Communication Connector IN:EtherCAT cable IN Connect to the previous EtherCAT device. OUT:EtherCAT cable OUT Connect to the next EtherCAT device. IN, OUT EtherCAT Ethernet Communication Connectors IN, OUT Placement Drawing