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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
  Introduction to Sercos III
  Summary of Sercos III Advantages
  Key Advantage: Communications Efficiency
  Key Advantage: Multi-Axis Distributed Control
  Key Advantage: Cross Communications Capabilities
Key Advantage: Enhanced Reliability
Key Advantage: Investment Protection


Key Advantage: Enhanced Reliability


In today's 24/7 world of highly competitive manufacturing, every step that can be taken to minimize machine or production downtime is crucial. Sercos III is engineered to enhance reliability by supporting either line topologies (all devices connected in a series to a master) or ring configurations. Sercos III devices feature a second Ethernet port to support an additional cable. When a cable is connected between the two ends of a line network, Sercos automatically initiates dual counter rotating telegrams across the resulting ring network. This improves fault tolerance by supporting redundant data transfer. In case of a break at any point in the ring, the Sercos III protocol automatically switches over to a dual-line structure. This bumpless recovery is nearly instantaneous: recovery occurs in 25 μs, which is less than one cycle.

This redundancy offers machine users an additional advantage: "hot" replacement or installation of devices during machine operation, without requiring machine shutdown or cycling of power -- allowing systems to be designed that continue operating using the new configuration and hardware.  Next >>