47results about How to "Eliminate DC component" patented technology

The invention discloses an industrial control system based on a field bus and a control network, comprising a master station, a slave station and a network communication protocol, wherein a master processor subsystem on the master station and a master communication protocol stack exchange data by double-port SRAM, and the master communication protocol stack and a slave communication protocol stack periodically and automatically communicate; the slave communication protocol stack of the slave station receives a control command sent by the master station, simultaneously can receive input terminal state information sent from other slave stations and can periodically send the input terminal state of an I/O controller to the network; the network communication protocol is coded by Manchester; in each communication period, the master communication protocol stack on the master station automatically sends an initial frame and successively sends a data frame to each slave station according to a set address sequence, and each slave station sends a response frame according to the same address sequence. The invention can effectively lower the performance requirement on the master station processor, has low cost and strengthens stability while hardware cost overhead is low.