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Direct cross-traffic

Ethernet – and POWERLINK – communication works according to the broadcast principle: Every node is free to broadcast its own data across the network, and every other node is generally able to receive these broadcasts. Nodes use the destination address included with the data packets to determine whether the data is intended for them. This transmission principle enables direct cross-traffic among controllers, which means that communication does not have to be routed through a dedicated master or managing node. In synchronized production segments, for instance, this feature makes it possible to synchronize the rotary encoders on every drive with a master encoder. For distributed safety architectures, direct cross-traffic among safety components is a basic prerequisite. The advantages are many: time savings, simplified systems and a reduction in control tasks that allows the use of less expensive controllers in many areas.