Omron NY532-5400 Reference Manual page 1447

Precautions for Correct Use
• Free-running counters start counting as soon as the power supply is turned ON. When the count
exceeds the valid range of ULINT data (18,446,744,073,709,551,615), it returns to 0 and counting
continues.
• This instruction only gets the current value of the free-running counter. It does not reset the counter
to 0.
• The first value of Out cannot be predicted. It will not necessarily start from 0.
NY-series Instructions Reference Manual (W560)
2 Instruction Descriptions
2-1395
2