![]() When developing a device which will communicate using Modbus, there may be value in using a master controller or a slave device simulator, or make use of readily-available utility software and libraries. non-profit trade association, now controls the Modbus protocol and provides free access to protocol specifications and technical resources. ![]() ![]() It was originally designed for communicating with programmable logic controllers (PLCs), but has since become popular for industrial sensors and instruments in general. Modbus is a communication protocol for industrial devices developed in 1979 by Modicon, now Schneider Electric. I needed to learn about Modbus recently, which although I’m in the heart of Canada’s SCADA-rich Oil and Gas country, has somehow eluded me up to now.
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