 |
ALPHA-VISION® API-Interface to Technology program: FC174 |
FC174
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
- rVal (REAL)
- Proczess value
PARAMETERS (OUT)
- bOk (BOOL)
- Status (1=okay, 0=error)
- bChanged (BOOL)
- Changed ?
PARAMETERS (IN_OUT)
DESCRIPTION
SetValReal_ex() - Writes input/output signal of the type <REAL>The value <rVal> ; 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).
- Function works only on Signal-Addresses of the types <DB...> and <PAW>
- 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
Beschreibung der Ausgangsparameter
| Object/Signal Address | bOk | bChanged | Remark |
|---|---|---|---|
| Bin-MP (A) | 0 | x | - |
| Bin-MP (DBX) | 0 | x | - |
| Bin-MP (E) | 0 | x | - |
| Ana-MP (PEW) | 0 | x | - |
| Ana-MP (PAW) | 1 | x | "rVal" is converted to raw value using lineare standardization. |
| Ana-MP (DBD) | 1 | 0/1 | - |
| Ana-MP (DBW) | 0 | x | - |
| PV (DBX) | 0 | x | - |
| PV (DBB) | 0 | x | - |
| PV (DBW) | 0 | x | - |
| PV (DBD, int) | 0 | x | - |
| PV (DBD, real) | 1 | 0/1 | - |
| PV (DBW, string) | 0 | x | - |