Master slave industrial token passing network

Details Master slave industrial token passing network Master slave industrial token passing network

H - Electricity

04

L

340/84

H04L 5/14 (2006.01) H04L 12/417 (2006.01)

Patent

CA 2030604

A communications network is comprised of master and slave stations. The master stations may receive a master token allowing control of the network for sending messages, and a solicit token that allowing the master stations to solicit other master stations for entry into the network. A master station receiving a solicit message answers with an acknowledgement signal and may immediately begin soliciting for successors. The slave stations receiving a solicit message may not accept the master token ar the solicit token but must respond with a negative acknowledgement. Slave stations enter the network to respond to messages only. The use of slave stations allows for the implementation of simpler networks and improves network efficiency. The negative acknowledgement identifies the presence of the slave stations and allows detection of duplicate network nodes.

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