Installation manual
CNC 8060
CNC 8065
INTRODUCTION TO THE PLC.
3.
(REF: 1402)
·229·
Operation of a timer.
Set the time constant.
The time constant is defined with a numeric value or with an internal value of a register R.
Its value must be within the 0 to 4294967295 ms range, which is the equivalent of 1193 hours
(almost 50 days).
Activating the timer.
The timer is activated according to the selected input number at an up-flank (0 to 1 transition)
or at a down-flank (1 to 0 transition).
Later on, this same section shows how to operate in each of these modes.
(T) Status output.
It indicates the logic state of the timer. It is referred to by the letter "T" followed by the timer
number. For example: T1, T25, T102, etc.
As the timer's logic state depends on the selected work mode (TG1, TG2, TG3 and TG4)
it will be explained later on.
(T) Elapsed time.
It indicates the time elapsed at the timer since it was triggered. It is referred to by the letter
"T" followed by the timer number. It is represented by T123 which is the same as the status
output, but is used in different types of instructions.
In binary instructions, it refers to the logic state of the timer.
In arithmetic and comparison instructions, it refers to the elapsed time.
TG1 20 100
Triggers timer T20 in Mono-stable mode (TG1) with a time constant of 100 ms.
TG2 22 R200
Triggers timer T22 in delayed activation mode (TG2) with the time constant stored in register R200
in ms.
T123 = M100
Assigns the state (1/0) of T123 to M100.
I2 = MOV T123 R200
Transfers the time elapsed at T123 to register R200.
CPS T123 GT 1000 = M100
Compares the time elapsed at T123 is greater than 1000. If so, it activates mark M100.
To Next Page
Loading...
