ALPHA-VISION® API-Interface to Technology program: FC163

FC163

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

r4Lmt (REAL)

Limit

iLmtNo (REAL)

Limit # 1..7

PARAMETERS (OUT)

bOk (BOOL)

Status (1=okay, 0=Error)

PARAMETERS (IN_OUT)

DESCRIPTION

SetLimit() - Set Limit
The limit -specified by the parameter <iLmtNo>- of the analogue Measuring Point -referenced by <obj>- is set to the value <r4Lmt>.


The function is defined for analogue Measuring Points (MP) only.

• On setting a limit the rule 'G1>G2...>G7' must be achieved.
• All limits must lie within the defined range for the MP.
• For Objects of the type 'PV=Process Variables' and 'Binary-MPs' 'bOk=0 (Error)' is returned.
• Possible Errors:
  • a) Invalid Object Number
  • b) wrong Object Type
  • b) rule for limits not obeyed

Description of the Output Parameters

Object Type	bOk	Remark
MP (analogue)	1	rule for limits must be achieved.
MP (binary)	0	-
PV	0	-