Function
A function calculates a result according to the current value of its inputs.
A function has no internal data and is not linked to declared instances. - Test a bit of an integer register.
Inputs
|
Input |
Data Type |
Range |
Unit |
Default |
Description |
|---|---|---|---|---|---|
|
IN |
ANY |
|
|
|
8- to 64-bit integer register. |
|
BIT |
DINT |
|
|
|
Bit number (0 = less significant bit). |
Outputs
|
Output |
Data Type |
Range |
Unit |
Description |
|---|---|---|---|---|
|
Q |
BOOL |
FALSE, TRUE |
|
Bit value. |
Remarks
- Types LINT, LREAL, REAL, STRING, and TIME are not supported for IN and Q.
- IN and Q must have the same type.
- In case of invalid arguments (e.g., bad bit number or invalid input type), the function returns FALSE.
FBD Language Example
FFLD Language Example
- In the FFLD Language, the operation is executed only if the input rung (EN) is TRUE.
- The output rung is the output of the function.
- The function is executed only if EN is TRUE.
IL Language Example
Not available.
ST Language Example
Q := TESTBIT (IN, BIT);
See Also
