Built-in DOP functions
General
Introduction
Illustration
The Built-in DOP functions are part of the procedure category; they do not return value, but they do possess several parameters, some of which have to be filled in.
The functions use three types of parameters: l l l in read only (IN) format, acknowledged at the start of function execution, in write only (OUT) format, set at close of function execution, in read and write format (IN/OUT), whose contents have been acknowledged at the start of function execution and are then updated by the function results.
The parameter type is displayed in the Type of Parameter of the … column located in the Library functions screen.
The illustration below gives an insight into the Library functions screen where the various parameters of the selected function are displayed.
PL7: Library functions
EF
Function information: Parameters Detail...
Family Lib.V.
App.V
Dates, Times, and Periods2.10
-
Diagnostics
Integrated DOP
Explicit exchanges
1.01
-
3.03 3.03
1.00
Call format
Name
ADJUST
ASK_MSG
ASK_VALUE
ASSIGN_K
PROCEDURE parameter:
Name Type
ADR AR_W
DATA AR_W
VAL AR_W
Kind
IN
IN
Comment
CCX17 address table
Table for data to be sent
OUT Table for data to be received
Comment
Read/write memory objects and I/O
Variable blocking entry on CCX
Variable blocking entry on >>
Dynamic key assignment >>
Entry field
?
Call display
ASK_MSG( )
OK Cancel
TLX DS 37 PL7 xxE
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