Home Site Map Contact
News Technology Development Tools Certification Literature Support Organization Products
Introduction to Sercos interface
Applications Types
Sercos III
General Architecture
Sercos III Profiles
Blended Infrastructure
Additional Resources
Sercos I and II
Sercos Standardization


Sercos III has a substantial increase in transmission speed, compared to the first two Sercos implementations. It uses proven hardware synchronization with a sub-microsecond jitter, for precise real-time control. Some typical values are:

Size of Cyclic Data Cycle Time No of Drives Type of Cyclic Data
8 Byte 31.25 us 8 Torque command, actual position
12 Byte 250 us 70 Speed command and actual value, position command and actual value
32 Byte 1 ms 150 Numerous command and actual values
16 Byte 1 ms 254 Numerous command and actual values, transmitted between maximum number of drives in a ring

This table shows the performance of drives on a single ring. It's possible to combine multiple rings to create a distributed network in order to increase the overall performance of a system. Hundreds to thousands of drives can be linked using peer-to-peer communications.