TMD
Function Block - Down-counting stop watch.
Inputs
|
Input |
Data type |
Description |
|
IN |
BOOL |
The time counts when this input is TRUE. |
|
RST |
BOOL |
Timer is reset to PT when this input is TRUE. |
|
PT |
TIME |
Programmed time. |
Outputs
|
Output |
Data type |
Description |
|
Q |
BOOL |
Timer elapsed output signal. |
|
ET |
TIME |
Elapsed time. |
Time diagram
Remarks
The timer counts up when the IN input is TRUE. It stops when the programmed time is elapsed. The timer is reset when the RST input is TRUE. It is not reset when IN is false.
ST Language
MyTimer is a declared instance of TMD function block.
MyTimer (IN, RST, PT);
Q := MyTimer.Q;
ET := MyTimer.ET;
FBD Language
LD Language
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