求翻译：用于连接外部的机械触点和电子数字式传感器。例如：现场行程开关、按钮等机械触点开关等。其通断信号通过数字量输入模块将现场传来的外部数字电平转换为PLC可接受的内部信号电平。是什么意思？

For connection to external mechanical contact and electronic digital sensors. For example: field trip mechanical contact switches such as switches, buttons, and so on. Its on off signals through digital input module will be broadcast from the external digital level translation is acceptable internal

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Uses in connecting exterior mechanical electronic contact and the electronic digital sensor.For example: Scene limit switch, button and so on mechanical electronic contact switch and so on.Its make-and-break signal through the digital quantity load module exterior digital level transformation which

For connection to external mechanical contact and electronic digital sensors. For example: field trip mechanical contact switches such as switches, buttons, and so on. Its on/off signals through digital input module will be broadcast from the external digital level translation is acceptable internal

For connection to external mechanical contact and electronic digital sensors. For example: field trip mechanical contact switches such as switches, buttons, and so on. Its on/off signals through digital input module will be broadcast from the external digital level translation is acceptable internal