6. EtherCAT Settings This section describes the procedure for connecting the PLC to the Digital Sensor Communication Unit via EtherCAT. 6.1. EtherCAT Communications Settings The settings required for communications between the PLC (Position Control Unit) and the Digital Sensor Communication Unit are given below. 6.1.1. EtherCAT Communications Setting Contents The settings required for EtherCAT communications are given below. Additional Information The node addresses 17 onwards are set for CJ1W-NC[]82 when EtherCAT-compatible devices other than G5-series Servo Drives are connected.
The setting required for communications between the Digital Sensor Communication Unit and the Distributed Sensor Unit is given below. 6.2.1. DS-Bus Communication Setting Contents The settings required for communications through the Inter-Unit DS-Bus network are given below. *The Sensor unit numbers are automatically assigned after turning ON the power supply to the Digital Sensor Communication Unit and to the Distributed Sensor Unit. In this document, one Fiber Amplifier is connected to the Digital Sensor Communication Unit and another one to the Distributed Sensor Unit.
The Sensor unit number 1 is assigned to the Fiber Amplifier that is connected to the Digital Sensor Communication Unit, and the Sensor unit number 2 is assigned to the Fiber Amplifier connected to the Distributed Sensor Unit. Additional Information For details on the Inter-Unit DS-Bus network, refer to A-2 Using Distributed Sensor Units of the EtherCAT ® Digital Sensor Communication Unit Operation Manual (Cat. No. E429). 6 6. EtherCAT Settings PLC (Position Control Unit) Digital Sensor Communication Unit Unit number 0 - Node address - 017 6.2. DS-Bus Communication Settings Distributed Sensor Unit Unit address 1 Termination setting ON