Detailed description
2.14 Useful tips on programming with STEP 7
Power Line Basic PLC Program (P3)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
2-261
Note
Address register AR2 is used in the block. However, this register is also used for multi-
instance DBs. For this reason, the relevant FB must not be declared as a multiinstance
DB.
FUNCTIONBLOCK FB 100 Comment
CODE_VERSION1 //To deactivate multi-instance DB with STEP 7 Version
2 and higher
VAR_INPUT
WhichAny : INT ;
Addr1 : ANY ; //Observe predetermined order
Addr2 : ANY ;
Addr3 : ANY ;
Addr4 : ANY ;
END_VAR
VAR_TEMP
dbchr : WORD ;
Number: WORD ;
type : BYTE ;
Temp_addr : ANY ;
END_VAR
BEGIN
NETWORK
TITLE =
L WhichAny;
DEC 1;
L P#10.0; //10 bytes per ANY
*I;
LAR2;
L P##Addr1;
+AR2; //Add ANY start addresses
L P##Temp_addr;
LAR1 ; //Retrieve pointer from VAR_TEMP
L DID [AR2,P#0.0]; //Transfer pointer value to VAR_TEM
T LD [AR1,P#0.0];
L DID [AR2,P#4.0];
T LD [AR1,P#4.0];
L DIW [AR2,P#8.0];
T LW [AR1,P#8.0];
CALL FB 101, DB 100
(ANYPAR := #Temp_addr); //ANYPAR is data type ANY
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