This article I will use Revi Connect and Schneider Modicon M221 to build a  Modbus RTU network. Revpi Connect is Master and Schneider Modicon M221 is Slave, and a RS485>USB converter is used in the RevPIConnect. I will also create an IO Check program on the Schneider side and check the consistency of the data. Thanks! The RevPI Connect used in this article was lent by PILZ JAPAN. PILZ PILZ … Continue reading Project#Revpi Connect x Schneider Mdoicon M221 x Modbus RTU