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5 Basic Instruction
5.4 Operating Timer
67
FXCPU Structured Programming Manual
[Basic & Applied Instruction]
1
Outline
2
Instruction List
3
Configuration of
Instruction
4
How to Read
Explanation of
Instructions
5
Basic Instruction
6
Step Ladder
Instructions
7
Applied Instructions
(Program Flow)
8
Applied Instructions
(Move and
Compare)
9
Applied Instructions
(Arithmetic and
Logical Operation)
10
Applied Instructions
(Rotation and
Shift Operation)
Cautions
1) When a timer device is specified in a program, use the following depending on the locations of use.
- Used as contacts: TS
- Used as a coil: TC
- Used as a current value: TN
2) Use the timer T192 to T199 within a subroutine or interrupt routine. This timer counts the time when
executing a coil instruction or END instruction.
When the set value is reached, the output contact operates when the coil instruction or the END
instruction is executed.
A general purpose timer counts the time only when the coil instruction is executed. Such a timer does not
operate normally because it does not count the time if used in a subroutine or an interrupt routine where
the coil instruction is executed only under certain conditions.
3) Note: If a 1 ms integrating timer is used in a subroutine or an interrupt routine, the output contact operates
when the first coil instruction is executed after the set value is reached
(FX
1N, FX1NC, FXU, FX2C, FX2N, FX2NC, FX3S, FX3G, FX3GC, FX3U and FX3UC PLCs)
4) Some restrictions to applicable devices
S1: The FX
3G, FX3GC, FX3U and FX3UC PLCs only are applicable.
S2: The target device can be indexed only by the FX3U and FX3UC PLCs.