Speed
The importance of higher communication speeds is to enable greater and more accurate manufacturing and process monitoring & control. Speed is often specified in terms of bit-rate. However, the ability to affect high-speed performance is more accurately described by throughput and response time. CC-Link technology has been optimized for speed, throughput and response. A system consisting of 64 stations and thousands of input/output points can be updated in 4 ms. There are five speed options available based on the length of wired network cable required. These range from 10Mbps at 100 meters to 156Kbps at 1,200 meters. However, longer distances can be spanned by using optical repeaters (up to 4.3 Km at 10Mbps).
Determinism
Determinism is the measure of predictability and repeatability. It specifies the worst-case time uncertainty for the transmission of data (such as reading inputs, setting outputs). The ability of a network to provide for stabllosed-loop control of an automation system depends greatly on the deterministic properties of the network. CC-Link technology utilizes a master/slave architecture. Therefore, there is no timing uncertainty due to access arbitration (unlike some other network technologies). System designers can rely on CC-Link's fast, predictable, unvarying I/O response.
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Consider these important topics when selecting an Open Industrial Network:
Speed Products Openness Testing Ease of
Determinism Reliability Interoperability Implementation
