Siemens SINUMERIK 828D Function Manual page 971

Any errors are displayed via the output parameters "Error" and "State".
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, start­up section [Page
925]").
Declaration of the function
FUNCTION_BLOCK FB 5
KNOW_HOW_PROTECT
VERSION : 3.0
VAR_INPUT
Req : BOOL;
Addr: ANY ;
Area BYTE ;
Unit : BYTE ;
Index1: INT;
Index2: INT;
CnvtToken: BOOL;
VarToken ANY ;
END_VAR
VAR_OUTPUT
Error : BOOL;
Done : BOOL;
State : WORD ;
END_VAR
VAR_IN_OUT
RD: ANY ;
END_VAR
BEGIN
END_FUNCTION_BLOCK
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
//Server name
//Variables name string
//Area: NCK = 0, channel = 2
//Field index 1
//Field index 2
//Conversion into 10-byte token
//Struct with 10 bytes for the variable token
P3: Basic PLC Program for SINUMERIK 840D sl
13.13 Block descriptions
971