Is there a function like the rack optimisation in CIP EthernetIP for head devices in PROFINET?
Posted: 22 Mar 2024, 13:21
Is there a function like the rack optimisation in CIP EthernetIP for head devices in PROFINET?
Basically, we do not need this function with PROFINET. The performance of the controllers and the network is so good, even at 100 MBit/s transmission speed, that 64 devices, e.g. servo drives or modular field devices with 20 analogue channels can be updated per millisecond. In addition, another 50% of the 100 MBit/s are free for TCP data exchange, e.g. an HMI or a connection to the ERP system or camera data or OPC UA or ...Webinar_Question wrote: ↑22 Mar 2024, 13:21 Is there a function like the rack optimisation in CIP EthernetIP for head devices in PROFINET?
Performance can be further increased by a function that was provided with the PROFINET Perfromance Upgrade (since ~2012). The PROFINET Perfromace Upgrade makes it possible to transfer data optimised via the bus using the DFP (Dynamic Frame Packing) function. For example, 256 drive axes can be transmitted in one millisecond, which are distributed across 256 individual axis drives. There are therefore 256 real PROFINET participants.
It should be noted that this function is unfortunately not offered by all devkits.