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UDCNT1
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6.8 Other Convenient Instructions
6.8.1 Counter 1-phase input up or down (UDCNT1)
Program Example
(1) This program uses C0 (Up/Down counter) to count the number of times X0 goes from OFF
to ON after X20 has gone ON.
[Ladder Mode] [List Mode]
[Operation]
Step
Instruction
Device
X0
X20
X1
C0 present value
C0 contact
012345676543210123210 11-----
Down
UpUp