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P3: Basic PLC Program for SINUMERIK 840D sl

13.13 Block descriptions

Basic Functions

Function Manual, 09/2011, 6FC5397-0BP40-2BA0

971

Any errors are displayed via the output parameters "Error" and "State".

Declaration of the function

Note

In order to read a double variable from the NCK without adapting the format, an ANY pointer

of the REAL 2 type must be specified in the target area for read data (e.g.: P#M100.0 REAL

2). If the basic program recognizes REAL 2 as the target type when reading a "double"

variable, the data is applied to the PLC data area as a 64-bit floating point number.

FB 5 can only write GUD variables if basic program parameter "NCKomm" has been set to

"TRUE" (in OB 100: FB1, DB7; see "FB 1: RUN_UP Basic program, startup section [Page

925]").

FUNCTION_BLOCK FB 5 //Server name

KNOW_HOW_PROTECT

VERSION : 3.0

VAR_INPUT

Req : BOOL;

Addr: ANY ; //Variables name string

Area BYTE ; //Area: NCK = 0, channel = 2

Unit : BYTE ;

Index1: INT; //Field index 1

Index2: INT; //Field index 2

CnvtToken: BOOL; //Conversion into 10-byte token

VarToken ANY ; //Struct with 10 bytes for the variable token

END_VAR

VAR_OUTPUT

Error : BOOL;

Done : BOOL;

State : WORD ;

END_VAR

VAR_IN_OUT

RD: ANY ;

END_VAR

BEGIN

END_FUNCTION_BLOCK

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