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Figure 1 Diagram of CPU module interfaces
Interface Name Function
DB9 (CN1)/(receptacle) 2 RS485 ports, supporting MODBUS protocol
DB9 (CN2)/(receptacle) 1 CANopen/CANlink port
Network port (CN4) EtherCAT protocol
Network port (CN3)
1. MODBUS TCP protocol
2. Standard Ethernet functions
3. System program commissioning
4. User program download and commissioning (IPv4 only)