Mitsubishi Electric · MELSEC iQ-R I/O Module
A value outside the permissible range of 0 to 2 has been configured for the 'Input dark test pulse OFF time' parameter. This incorrect setting directly affects the duration of the OFF state during the input dark test, which is critical for accurate testing.
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Set the 'Input dark test pulse OFF time' parameter within the valid range from 0 to 2.