CTU
The function block CTU is an up counter.
Inputs
VAR_INPUT
CU : BOOL; (* Count Up *)
RESET : BOOL; (* Reset Counter to 0 *)
PV : WORD; (* Counter Limit *)
END_VARName | Type | Description |
|---|---|---|
CU | BOOL | Counting up |
RESET | BOOL | Reset the counter to 0. |
PV | WORD | Counter limit |
Outputs
VAR_OUTPUT
Q : BOOL; (* Counter reached the Limit *)
CV : WORD; (* Current Counter Value *)
END_VARName | Type | Description |
|---|---|---|
Q | BOOL | Q returns TRUE if CV is greater than or equal to the upper limit PV. |
CV | WORD | If RESET = TRUE, the counter variable CV is initialized with 0. If CU has a rising edge from FALSE to TRUE, then the function block CV is increased by 1 as long as CV is less than PV. (i.e. if no overflow is caused) |
Requirements
Development environment | Target platform | PLC library to include |
|---|---|---|
TwinCAT v3.0.0 | PC or CX (x86) | Tc2_Standard |