Counter (C) - Mitsubishi Electric Q01UCPU User Manual

4.2.11

Counter (C)

The counter (C) is a device that counts the number of rises for input conditions in sequence programs.
When the count value matches the set value, the counting stops and its contact is turned on.
The counter is of an incremental type.
(1) Counter type
The following counter is available.
• Counter that counts the number of rises for input conditions in sequence programs
(2) Counting
(a) When the OUT C
The coil of the counter is turned on/off, the current value is updated (the count value + 1), and the contact is
turned on.
In the END processing, the current counter value is not updated and the contact is not turned on.
[Ladder example]
[Processing at OUT C0 Instruction (X0: OFF to ON)]
(b) Current value update (count value + 1)
The current value is updated (count value + 1) at the leading edge (OFF  ON) of the OUT C
The current value is not updated while the coil is off, or when it remains on or turns off from on by the OUT C
instruction.
[Ladder example]
X0
[Current value update timing]
Sequence
program
X0
Coil C0
instruction is executed
X0
END
Sequence
program
K10
C0
END OUT C0
ON
OFF
ON
OFF
Current value
update
K10
C0
OUT C0 END
Processing
Coil ON/OFF
Current value update
Contact ON
END OUT C0 END
CHAPTER 4 DEVICES
instruction.
OUT C0
Current value
update
365
4