MC_LinTableImportFromAsciFile_BkPlcMc

The function block imports a linearization table from a file in ASCI format.

Inputs

VAR_INPUT
    Execute:     BOOL:=FALSE;
    FileName:    STRING(255):=’’;
END_VAR

Name	Type	Description
Execute	BOOL	A rising edge initiates the import.
FileName	STRING

Inputs/outputs

VAR_INOUT
    Axis:           Axis_Ref_BkPlcMc;
END_VAR

Name	Type	Description
Axis	Axis_Ref_BkPlcMc	Here, the address of a variable of type Axis_Ref_BkPlcMc should be transferred.

Outputs

VAR_OUTPUT
    Busy:           BOOL;
    Done:           BOOL;
    Error:          BOOL;
    ErrorID:        UDINT;
    LastIdx:        INT:=0;
END_VAR

Name	Type	Description
Busy	BOOL	Indicates that a command is being processed.
Done	BOOL	This indicates successful identification.
Error	BOOL	The occurrence of an error is indicated here.
ErrorID	UDINT	An encoded indication of the cause of the error is provided here.
LastIdx	INT

Behavior of the function block

The function block reads the contents of the file and interprets it line by line according to the following rules:

Leading spaces (blanks, tabs) are ignored.
The digits 0..9 are accepted and used as digits before the decimal point for the first value.
A point or comma is interpreted as a separator between digits before and after the decimal point.
The digits 0..9 are accepted and used as digits after the decimal point for the first value.
Spaces (blanks, tabs) are interpreted as separators between the first and second values.
The digits 0..9 are accepted and used as digits before the decimal point for the second value.
A point or comma is interpreted as a separator between digits before and after the decimal point.
The digits 0..9 are accepted and used as digits after the decimal point for the second value.
If unexpected characters are detected or expected elements are missing, the import is aborted with an error.
Each pair of numbers is entered as a point in the linearization table of the axis. LastIdx is thereby incremented. After a successful import, the number of table points read is available here.

Manipulation of the file

The ASCI format makes it easy to manipulate such a file with a simple editor. This is possible, but not recommended. A deviation from the expected structure of the file makes it impossible to import it. Even with the correct formatting, however, a linearization table can inadvertently be created that makes it impossible for the system to function correctly. In addition, persons may be endangered and the products or plant may be damaged.