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 FAQ

  How many timers or counters can I use on one logic program?


The numbers of each instruction that you can use depends on the memory usage of the logic capacity (step). It is possible to use the timer or the counter within the range of the logic capacity (step).
The number of instruction steps of the timer or the counter are shown below.
* Timer Instructions
Category
Instruction Name
Pro EX
Instruction Notation
Number of Steps in Instructions
Number of Operands
Ladder Symbol
Timer Instruction
On Delay Timer
TON
2 STEP
1
Off Delay Timer
TOF
2 STEP
1
Pulse Timer
TP
2 STEP
1
Accumulate On Delay Timer
TONA
2 STEP
1
Accumulate Off Delay Timer
TOFA
2 STEP
1

* Counter Instructions
Category
Instruction Name
Pro EX
Instruction Notation
Number of Steps in Instructions
Number of Operands
Ladder Symbol
Counter
Instruction
Up Counter
CTU
2 STEP
1
CTUP
2 STEP
1
Down Counter
CTD
2 STEP
1
CTDP
2 STEP
1
Up/Down
Counter
CTUD
2 STEP
1
CTUDP
2 STEP
1

NOTE
* You can confirm the current logic capacity (step) by following [Project (F)] on the menu bar -> [Property (I)] -> [Project Information (I)] -> [Memory Usage].

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