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The design thoughts and theory of the new type of auto-controlling pull rope tired test set based on PLC are given,and the composing parts,controlling units and software are introduced.

拉绳自动回收装置被广泛应用于家用电器产品中,为了保证自动回收装置的质量和使用寿命,要求该类产品在出厂前必须做拉绳疲劳试验。