Danfoss MCO 305 Design Manual

Also see for MCO 305: Operating instructions Operating instructions Design guide

MCO 305 Design Guide__ PC Software Interface __MG.33.L5.02 – VLT® is a registered Danfoss trademark 87 Single-SteppingTo single-step through the program, use Development → Singlestep or press [F9]. This will execute the nextstatement (i.e. the statement currently highlighted in yellow) and automatically stop before the nextexecutable statement is executed. This next statement will then be highlighted in yellow.While execution is stopped, the user is free to examine and modify the value of any program variable, setand clear breakpoints, etc.At any time, program execute can be continued without single stepping, by using Development → Go. Using BreakpointsBreakpoints are set by double-clicking anywhere on the statement in the program (except on the blue dot)where the breakpoint is to be set. The dot will change from blue to red to indicate that the breakpoint hasbeen set.Double-clicking on a statement that already contains a breakpoint will clear the breakpoint and the dot willchange back from red to blue.The user can set a “breakpoint” at any executable statement in the program. These are the statements withblue dots. When program execution encounters a breakpoint, execution is immediately stopped prior toexecuting the statement with the breakpoint. The statement will then be highlighted in yellow since this isthe next statement to be executed.While execution is stopped, the user is free to examine and modify the value of any program variable, setand clear breakpoints, etc.When ready, the user can click on Development → Go to continue program execution. The program will thenexecute up until it encounters another breakpoint. Note that it is also possible to single-step (usingDevelopment → Singlestep or [F9]) after stopping at a breakpoint.At any time during program execution, the user may also press the [Esc] key to stop execution. Executionwill then stop immediately rather than continuing to the next breakpoint. The next statement to beexecuted will be highlighted in yellow. Again, the user can continue with either Development → Go orDevelopment → Singlestep [F9].The diagram shows what the Edit Window mightlook like when breakpoints have been set beforeeach “print” statement. Note the red dot on thesestatements.NB!:A maximum of 10 breakpoints are allowed.NB!:#DEBUG commands have been replaced by breakpoints and are no longer necessary. Any existing#DEBUG commands need not be removed from the program; they will simply be ignored.