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6 BASIC INSTRUCTIONS
[Program Example]
(1) The present value stored in counter C0 to C20 is output to Y30 to Y3F as BCD data when X8
is on. (When present value is less than 9999)
[Ladder Mode]
[List Mode]
Steps
Instruction
(2) The following is a down counter program.
[Ladder Mode]
[List Mode]
Instruction
Steps
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Outputs the present value of C (D+Z1)
to Y30 to Y3F as BCD.
Executes Z1+1
With Z1=21 or X7 (reset input), sets Z to 0
Device
Transfers the value 100 to D8 when X7
is ON
When M38 is OFF, X8 goes from OFF to
ON, and 1 is decremented from D8.
At D8=0, M38 goes ON
Device
MELSEC-Q/QnA
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