P3: Basic PLC Program for SINUMERIK 840D sl
13.13 Block descriptions
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
995
Declaration of the function
Structure for ring buffer
FUNCTION_BLOCK FB 29
VAR_INPUT
Func : INT ; //Function number: 0 = No function,
//1 = Signal recorder, 2 = Data trigger
Signal_1 : BOOL ; //Start of brake test
Signal_2 : BOOL ;
Signal_3 : BOOL ;
Signal_4 : BOOL ;
Signal_5 : BOOL ;
Signal_6 : BOOL ;
Signal_7 : BOOL ;
Signal_8 : BOOL ;
NewCycle : BOOL ;
Var1 : BYTE ;
Var2 : INT;
Var3 : INT;
BufDB : INT;
ClearBuf : BOOL ;
DataAdr : POINTER; //Area pointer to testing word
TestVal : WORD ; //Value for triggering
AndMask : WORD ; //AND mask to the testing word
END_VAR
VAR_OUTPUT
TestIsTrue : BOOL ;
END_VAR
VAR_IN_OUT
BufAddr : INT;
END_VAR
TITLE =
//Ring buffer DB for FB 29
VERSION : 1.0
STRUCT
Field: ARRAY [0 .. 249 ] OF STRUCT //can be any size of this struct
Cycle : INT ; //Delta cycle to last storage in buffer
Signal_1 : BOOL ; //Signal names same as FB 29
Signal_2 : BOOL ;
Signal_3 : BOOL ;
Signal_4 : BOOL ;
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