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ALPHA-VISION® API-Interface to Technology program: FC173 |
FC173
SUMMARY
The AbvSpu provides functions to read and write process attributes (status, measuring value, alarm information) as well as to control process parameters (limits, delay times, etc.).PARAMETERS (IN)
- obj (INT)
- Object Number
- bVal (BOOL)
- Process Value
PARAMETERS (OUT)
- bOk (BOOL)
- Status (1=okay, 0=error)
- bChanged (BOOL)
- Input signal has changed
PARAMETERS (IN_OUT)
DESCRIPTION
SetValBool_ex - Writes input/output signal of the type <BOOL>.The value <bVal> is written to the S7-Address specified by the process connection of the object referenced by <obj>.
- The function is defined for Measuring Points (MP) and Process Variables (PV).
- The function works on signal addresses of the types <DB...>, <A> and <PAW> only.
- The parameter <bChanged> tells whether the value of the input signal has changed. For signal addresses of the type <A/PAW< it is undefined
- In case of an error <bOk=0> is returned.
- Possible Errors:
- a) Invalid Object Number
- b) illicitly signal address
Description of the Output Parameters
| Object/Signal Address | bOk | bChanged |
|---|---|---|
| Bin-MP (A) | 1 | x |
| Bin-MP (DBX) | 1 | 0/1 |
| Bin-MP (E) | 0 | x |
| Ana-MP (PEW) | 0 | x |
| Ana-MP (PAW) | 1 | x |
| Ana-MP (DBD) | 0 | x |
| Ana-MP (DBW) | 1 | 0/1 |
| PV (DBX) | 1 | 0/1 |
| PV (DBB) | 1 | 0/1 |
| PV (DBW) | 1 | 0/1 |
| PV (DBD, int) | 1 | 0/1 |
| PV (DBD, real) | 0 | x |
| PV (DBW, string) | 0 | x |