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Features of 
Industry Need CC-Link IE Feature Physical Ruggedness Redundant media
Multi-mode fiber optics High Reliability High immunity to EMF (due to use of fiber optics)
Uninterrupted service through cable, station failures
Automatic ID of segment failures
Uses standardized IEEE physical layer
Dual loop design Low Latency Guaranteed by design
No impact from intermittent services
Real-time communication with guaranteed QoS Ease of Use Daisy chain topology
Can encapsulate other protocols
Off-the-shelf Ethernet cables can be used
Off-the-shelf network analyzers can be used
Automatic identification of network fault location
Network communications transparent to applications Scalability 1 GB network speed
550 Meter segment length
Each network supports more than 100 stations
Networks can be joined to cover an entire plant
Capable of high data capacity transient messaging TOP↑ CC-Link IE cyclic (real-time) communication provides a transparent service to automation applications. The service is transparent because of the CC-Link IE shared memory model. Applications can be designed without being aware of any networked communications, which are managed by the network independently. Applications do not know (or need to know) which data originates on the network, where data is sourced from, or where data must be delivered. The cyclic communication service automatically handles this service. Since this cyclic communication service is automatically built-in, minimal configuration is required in order to start up the real-time communications. This is an important distinction between CC-Link IE and other industrial Ethernet automation networks. Using this shared memory model and communication, high reliability as well as easy configuration and set up is assured. Other industrial Ethernet protocols require longer transmission cycles and exponentially complicated configurations as the size and complexity of the network expands. Through the use of a token passing protocol, each CC-Link IE network controller passes the token and transmits the same data length. Since the data size is fixed, stable real-time network performance is assured. This also assures that real-time communication takes precedence over transient communication. Thus any spike in transient communication will have no impact on the real-time communication service; instead, the transient communication timing will vary should it exceed its allotted network capacity. Like the automatic backup Master capability of CC-Link, CC-Link IE also has an automatic network control switch capability, a key feature for network stability. Even if one control station fails, another station will automatically take over the control of the network and maintain communication. Going beyond the standard CC-Link functionality, if two CC-Link IE stations fail simultaneously, the network will separate and one station will take control of each segment. 
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