Panasonic FP-X0 L14R User Manual page 185

The output is determined by the final operation results
If the same output is used by several instructions such as the OT, KP, SET, RST or data transfer
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functions, the output obtained at the I/O update is determined by the final results of the operation.
<Example> Output to the same output relay Y0 with OT, KP, SET and RST instructions.
When X0 to X2 are all on, Y0 is output as off at I/O update.
If you need to output a result while processing is still in progress, use a partial I/O update instruction
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(F143).
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