Detailed description
2.12 Block descriptions
Basic logic functions: PLC basic program solution line (P3 sl)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
175
Configuration steps
• Select function of diagnostics block.
• Define suitable data for the recording as signal recorder or data triggering.
• Find a suitable point or points in the user program for calling the diagnostics FB.
• Create a data block for the ring buffer, see call example.
• Call the diagnostics FB with parameters in the user program.
In function 1, it is advisable to clear the ring buffer with the "ClearBuf" parameter. When the
recording phase with function 1 is completed, read out the ring buffer DB in STEP7 with the
function "opening the data block in the data view". The content of the ring buffer DB can now
be analyzed.
Call example
FUNCTION FC 99: VOID
TITLE =
VERSION : 0.0
BEGIN
NETWORK
TITLE = NETWORK
CALL FB 29, DB 80 (
Func
:= 1,
Signal_1 :=M 100.0,
Signal_2 :=M 100.1,
Signal_3 :=M 100.2,
Signal_4 :=M 100.3,
Signal_5 :=M 10.4,
Signal_6 :=M 100.5,
Signal_7 :=M 100.6,
Signal_8 :=M 100.7,
NewCycle := TRUE,
Var1 := MB 100,
BufDB := 81,
ClearBuf :=M 50.0);
END_FUNCTION
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