what basic knowledge to learn plc?

Need to have an electrician, assemble secondary lines, and understand the basics of various relays.

Learning the PLC can be done as follows:

1. Buy this book about PLC, learn about electrician knowledge, understand the electrical appliances, and go to control and understand various actuators.

2, is to understand the working mode of PLC, find a PLC, according to the example on the book, consider a small project, to achieve a function.

3, practice the true knowledge, understand the corresponding process, do a PLC project independently, the project is completed, the PLC will also master the Siemens 200 series of small PLC is very suitable for novice learning, easier to get started.

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