Subscribe to our free newsletter and stay updated about the latest Sercos news.
Custom Ethernet protocols from office technology rely on user data being sent as individual packets to each device, embedded in a defined framework made from protocol overheads.
The overhead in data traffic is disproportionately high in small user data packets such as simple setpoint targets. For example, if status data of 4 bytes per device for 20 devices were sent individually, that would take up 1,680 bytes = 20*84 bytes altogether (smallest packet size with Ethernet: 64 bytes). However, only 80 bytes would be used productively for the application - that’s approximately. 5% of the bandwidth, even during low-peak cycle times.
In Sercos telegrams, however, up to 1,494 bytes of all device user data is packed together with an additional 44 bytes of overhead. With packets that are a maximum size of 1,538 bytes, the bandwidth available for productive data increases to up to 97%.
Sercos’ efficient real-time protocols result in universal, consistent machine connection with fast reaction times and great accuracy.