Three Generations in Two Decades
The first generation of Sercos was introduced in 1989. It supported transmission rates of 2 and 4 Mbit/s and was mainly used in advanced machine tool applications. In the following years Sercos became more and more accepted worldwide and was used in all kinds of different servo-driven applications. In 1995, Sercos was established as international standard IEC 61491.
The second generation was launched in 1999. The transmission rate was increased to 8 and 16 Mbit/s and the service channel for the transmission of asynchronous data was extended. This technology
is based on the SERCON816 ASIC, while downward compatibility with the first generation was maintained.
The third generation, Sercos III, was introduced into the market in 2005. Its recipe for success is the combination of the proven mechanisms of Sercos with the physics and protocol of standard Ethernet. It maintains backward compatibility with previous versions in regard to profiles, synchronization, message structures and the standardized parameter set that describes all aspects of real-time motion and I/O control. It offers new and innovative options for the automation technology of the future.