The Logic Diagram - HEIDENHAIN iTNC 530 Service Manual

11.3.2 The LOGIC diagram

With the LOGIC DIAGRAM function, the time course of the dynamic change of PLC
operands (M, I, O, T, C) can be displayed.
Call
Selecting the
operands
In the displayed table the desired operands can be selected. The individual positions in the table
are interrogated using dialog. Incorrect entries can be deleted with the DEL key. A trigger
condition can be set for each operand. 512 states are recorded each before and after a trigger
event. The following trigger conditions are possible:
1
0
e.g.:
Figure: Example for the operand selection
July 2010
Soft key to call the LOGIC DIAGRAM function.
Display selection table.
Record when operand is logical on (Triggering on positive edge)
Record when operand is logical zero (Triggering on negative edge)
No trigger:
If no trigger condition is entered for any of the operands, the operand states are
traced the operands are recorded continuously. The 1024 most recent states
remain saved.
0 I5 1
1 O6 0
2 M2003
Note
The WATCH LIST can also be called before and with the ADD TO LOGIC DIAGRAM soft key
operands can be added to the logic diagram.
Trigger on positive edge
Trigger on negative edge
No trigger
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