Elmomc SimplIQ Software Manual Bedienungsanleitung PDF herunterladen (Seite 42)

SimplIQ Software Manual 4BThe SimplIQ User Programming Language

MAN-SIMSW (Ver. 1.4)

5-13

if - elseif - else - end Conditional expression.

switch-case-otherwise-end Case selection.

goto Go to a certain point in the program.

reset Kill the state of the executing program and jump to a certain

point in the program.

function-return Declare a function and its return point.

## Declare a label or an auto-routine.

#@ Declare a label or an auto-routine.

#@ - return Declare an auto-routine and its return point.

exit Terminate program execution.

continue Transfers control to next iteration of smallest enclosing for or

while loop in which it appears.

try-catch Used to react to an expected fault.

5.7.1 Labels (Entry Points) and Subroutines

Labels denote that program execution can start from that location, or that program

execution can be branched to that location.

Label definition has the following syntax:

##<LABEL_NAME>

#@<LABEL_NAME>

A maximum of 12 characters — letters and/or digits (not leading) and underscore (not

leading) only — may be used for a label. The label name must be unique.

Labels can reside inside or outside function bodies, but not within a program flow structure,

such as a for iteration. Labels inside function bodies are regarded as local to the function

and serve as targets for goto instructions with the same function. Labels in the global text

scope serve as possible execution starting points, and also as targets for reset and global

scope goto.

A subroutine is a global label in which the body ends with a return keyword. A subroutine

is similar to a function without input and output arguments. It can be called from any place

in the program and may serve as a target for a reset instruction.

An auto-routine is a subroutine whose return keyword is an instruction to return to the next

line in the code, from where the subroutine was called.

DummyLabel is a keyword used internally by the Compiler. It is not a legal label or

subroutine name.

The XQ and the XC program launch commands use labels to specify where to start program

execution and where to terminate. For example, the command XQ ##LOOP2 is used to

begin execution at ##LOOP2.

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Elmomc SimplIQ Software Manual Bedienungsanleitung Seite 42