Setup serial modbus mach39/23/2023 ![]() I don't know why so few people are interested in other ways of controlling the VFD, perhaps it is because they think it is too complicated, or don't know better and do as they always done, or as others seem to do. ![]() That simple straight forward solution has been around for ages and widely spread, but has some disadvantages because it demands a good and reliable, very linear 0-10V PWM generator and several wires, all these may be noise sensitive, causing unexpected behavior as well as using up several digital inputs and outputs of the VFD and the BoB. Most people use 0-10V and inputs of their VFD to control the spindle speed and direction. So if you are not interested, save the time and leave now because it can be boring and too long for you. ![]() This thread is for those who are interested in trying out Modbus, using only two thin twisted pair wires and Mach3 brains feature.
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