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Introduction to Sercos interface
Advantages
Applications Types
Sercos III
Introduction
General Architecture
Features
Sercos III Profiles
Performance
Blended Infrastructure
Additional Resources
Sercos I and II
Sercos Standardization

Performance

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.