plcpn端口跟以太網端口一樣嗎？

PN是代表PLC集成了PROFINET口，也可以說是以太網口。DP是代表PLC集成了PROFIBUS-DP口。3PN/DP是：X1: MPI/DP X2: DP X3: PN-IO 兩個端口2PN/DP是：X1: MPI/DP X2: PN-IO 兩個端口（PROFINET IO-Controller; supports RT/IRT; PROFINET interface and 2 ports; MRP; PROFINET CBA; PROFINET CBA-Proxy; TCP/IP transport protocol; combined MPI/DP connection (MPI or DP master or DP slave); ）