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Academic Journal of Engineering and Technology Science, 2020, 3(5); doi: 10.25236/AJETS.2020.030503.

Research on Programming Failure of PLC Direct Translation Method


Wuxing Duan

Corresponding Author:
Wuxing Duan

Huizhou Technician Institute, Huizhou, Guangdong, China


Motor jog failure appears in the process of transforming relay control circuit into PLC ladder diagram with PLC direct translation. Taking the motor jog control system as an example, firstly analyze the root cause of failure according to PLC serial operation that is PLC contact soft component changes state after one scan cycle of its coil soft component. Then design solutions and improve program according to the functions of retention and memory of PLC auxiliary relay. Finally, the feasibility of the solution is verified through the experiment, and good results are achieved. The results supply some guidance for PLC programming in engineering.


Auxiliary relay, PLC direct translation, Serial operation, Motor jog

Cite This Paper

Wuxing Duan. Research on Programming Failure of PLC Direct Translation Method. Academic Journal of Engineering and Technology Science (2020) Vol. 3 Issue 5: 13-20. https://doi.org/10.25236/AJETS.2020.030503.


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