PROFINET is an Ethernet based industrial network protocol adapting Ethernet hardware and protocols to the real time needs of industrial automation.

SM-PROFINET features:

Dual 100 BASE-TX RJ45 connectors with support for shielded twisted pair, full-duplex 10/100 Mbps connectivity
Both RJ45 ports operate in full duplex mode as a network switch
Auto-negotiation
Auto crossover detection
LED indication of network port activity
PROFINET RT functionality