#format wiki
#language en
= Profinet =
 * Goal is to combine REAL Time control and ethernet.
   * take advantage of the improvements of Ethernet networks in terms of transmission bandwidth and network span.
   * provide more predictable and reliable real-time data transfer and means for support of precise synchronization of automation equipment.
     * real-time,
     * synchronized actions between field devices like drives,
     * efficient, frequent exchange of very small data records.

 * Normal - Ethertype:0x0800
 * RT - Real-Time: Factory Automation (5-10ms) TCP  Ethertype:0x8892
 * IRT - Isochronous Real-Time: drive control , HW support (<1ms)+ Vlan-Tag 

 * http://www.profibus.com
 * http://www.cisco.com/c/en/us/td/docs/switches/lan/cisco_ie3000/software/release/12-2_52_se/configuration/guide/ie3000scg/swprofinet.html


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