Advantech VisionNavi, User Manual

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VisionNavi User Manual 74
[Control(operation)]
Function name Overview Example of use
assign Assign a new value to a variable. u := sin(x) + cos(y)
assign_at
Assignment of one or several values to one
or several tuple elements. FileNames[0,2,4] :=
['f1','f2','f3']
break
Terminate loop execution or leave a switch
block.
for statement reference
case
Jump label that starts a branch within a
switch block.
switch statement reference
catch
Catches exceptions that were thrown in the
preceding try block.
try statement reference
comment Add a comment of one line to the program. *comment
continue Skip the current loop execution. For statement reference
default Alternative branch in a switch block. switch statement reference
else Alternative of conditional statement. for statement reference
elseif Conditional statement with alternative. for statement reference
endfor End statement of a for loop. for statement reference
endif End of if command. If statement reference
endswitch Ends a multiway branch block. switch statement reference
endtry
Ends a block where exceptions are han-
dled.
Try statement reference
endwhile End statement of a while loop. while statement reference
for
Starts a loop block that is usually executed
for a fixed number of iterations.
for i := 1 to Number by 1
Function name Overview Example of use
…
if (Area > 30)
break
elseif(Area > 20)
endfor
else
continue
endif
endfor
if Conditional statement. for statement reference
ifelse Conditional statement with alternative. for statement reference
import Import one or more external procedures. import ./the_one_dir
insert Assignment of a value to a tuple element. Areas[Radius-1] := Area
repeat Start statement of a repeat..until loop.
repeat
…
until(TRUE)
switch Starts a multiway branch block.
switch (Index)
case 1:
break
default:
break
endswitch
throw
Throws a user-defined exception or
rethrows a caught exception.
Try statement reference