Based on the standard of environment light source requirement in the photoelectric proximity switch tests, and the practical tests complied with this standard, the judgement difference was presented.
基于光电式接近开关所有试验条件中环境光源要求部分标准的制定，以及实际的根据标准进行试验结果判定的差异性。
PLC is as the core of hardware system, and it comprises stepper motor, proximity switch, photoelectric switch, hot resistance, electromagnetic valve et al.
硬件部分采用PLC作为控制核心部件，由步进电机、接近开关、光电开关、热电阻、电磁阀等组成。
Input Mode: contact switch, proximity switch, Hall switch and photoelectric switch.
输入方式：触点开关，接近开关，霍尔开关，光电开关。
Input Mode: contact switch, proximity switch, Hall switch and photoelectric switch.
输入方式：触点开关，接近开关，霍尔开关，光电开关。
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