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ALPHA-VISION® API-Interface to Technology program: FC172 |
FC172
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
- wSts (INT)
- Status
PARAMETERS (OUT)
- bOk (BOOL)
- 1=okay, 0=error
- bChanged (BOOL)
- Input signal has changed
PARAMETERS (IN_OUT)
DESCRIPTION
SetSts_ex() - Set StatusThe value <wSts> is written to the S7-Address specified by the process connection of the object referenced by <obj>.
Originally the function was designed for the object type PO=Process Object.
For compatibility reasons to existing S7-Technology Programs the function is kept. Instead of POs it now is written to PV-Objects of the type BIT/BYTE/WORD.
- For Measuring Points <bOK=0> is returned (Error).
- The parameter <bChanged> tells whether the value of the input signal has changed.
Description of the Output Parameters
| Object/Signal Address | bOk | bChanged | Remark |
|---|---|---|---|
| MP | 0 | x | - |
| PV (DBX) | 1 | 0/1 | Bit is reset for wSts=0, otherwise it is set. |
| PV (DBB) | 1 | 0/1 | "wSts" is cut to the Byte-Area |
| PV (DBW) | 1 | 0/1 | "wSts" is cut to the Byte-Area |
| PV (DBD, int) | 0 | x | - |
| PV (DBD, real) | 0 | x | - |
| PV (DBW, string) | 0 | x | - |