Maintenance department: maintenance industries circuit boards, machine equipment system, main board, controller, power supply, frequency converter, PLC and touch screen.
维修部：维修各行业电路板，机加工设备系统，主板，控制器，电源，变频器，PLC触摸屏等。
Proficient in PLC programming (Siemens), human-machine interface touch screen, frequency converter, servo driver, stepper motor.
精通PLC编程（西门子、三菱），人机接口触摸屏、变频器、伺服驱动器、步进电机。
"PLC, frequency converter and touch screen Practice Guide" (Chapter III).
《PLC、变频器和触摸屏实践教程》(第三章)。
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