What are the methods and steps for designing a PLC state transition diagram?

September 25, 2019 8:23 am

* Question

* Answer

(1) The entire control process is decomposed into several processes according to the task requirements, each of which corresponds to a state (ie, step), and a state relay is assigned.

(2) Find out the function of each state.The transition condition of the state may be a single contact, or a combination of a plurality of contact strings and parallel circuits.

(4) Draw a state transition diagram according to control requirements or process requirements.