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I understand that an analog input module (Type_ NP1AXH4-MR, etc.) has a signal line breakage detection function. How does it work?

I understand that an analog input module (Type_ NP1AXH4-MR, etc.) has a signal line breakage detection function. How does it work?
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Answer

For an analog input range (1 to 5 V or 4 to 20 mA), a line breakage detection function is provided.
An input voltage of 0.92 V or lower for the 1 to 5 V range and an input current of 3.68 mA or smaller for the 4 to 20 mA range are regarded as line breakage.