Omron FQM1-CM001, FQM1-MMA21, FQM1-MMP21 operation manual 280

Programming Appendix A

•Input Instructions (Logical Starts and Intermediate Instructions): The instruction reads bit status, makes comparisons, tests bits, or perform other types of processing every cycle and will output an OFF execution condition (power flow stops) when results switch from OFF to ON. The execution condi- tion will turn ON the next cycle.

Upwardly differentiated input instruction Example 0001.03

OFF execution condition created for one cycle only when CIO 0001.03 goes from OFF to ON.

•Downwardly Differentiated Instructions (Instruction preceded by %)

•Output instructions: The instruction is executed only during the cycle in which the input condition turned OFF (ON → OFF) and is not executed in the following cycles.

(%) Downwardly dif-	Example	0001.02
		%SET
ferentiated instruction

Executes the SET instruction once when

CIO 0001.02 goes ON to OFF.

•Input Instructions (Logical Starts and Intermediate Instructions): The instruction reads bit status, makes comparisons, tests bits, or perform other types of processing every cycle and will output the execution condition (power flow) when results switch from ON to OFF. The execution condition will turn OFF the next cycle.

Downwardly differentiated instruction Example 0001.03

Will turn ON when the CIO 0001.03 switches from ON → OFF and will turn OFF after one cycle.

Note Unlike the upwardly differentiated instructions, downward differentiation variation (%) can be added only to LD, AND, OR, SET and RSET instructions. To execute downward differentiation with other instructions, combine the instructions with a DIFD instruction.

•Input Instructions (Logical Starts and Intermediate Instructions): The instruction reads bit status, makes comparisons, tests bits, or perform other types of processing every cycle and will output an OFF execution condition (power flow stops) when results switch from ON to OFF. The execution condi- tion will turn ON the next cycle.

Downwardly differentiated input instruction Example 0001.03

OFF execution condition created for one cycle only when CIO 0001.03 goes from ON to OFF.

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