RAPID reference manual - Technology

RAISERobotWare-OSInstructionProgram executionProgram execution continues in the routine’s error handler. After the error handler hasbeen executed, program execution can continue with:- the routine that called the routine in question (RETURN),- the error handler of the routine that called the routine in question (RAISE).If the RAISE instruction is present in a routine’s error handler, program execution continuesin the error handler of the routine that called the routine in question. The sameerror number remains active. A RAISE instruction in a routine’s error handler has alsoanother feature, it can be used for long jump (see “Error Recovery With Long Jump”).With a long jump it is possible to propagate an error from an error handler from a deepneested call chain to a higher level in one step.If the RAISE instruction is present in a trap routine, the error is dealt with by the system’serror handler.Error handlingIf the error number is out of range, the system variable ERRNO is set toERR_ILLRAISE (see "Data types - errnum"). This error can be handled in the errorhandler.Syntax(EBNF)RAISE [] ’;’ ::= Related informationDescribed in:Error handlingError recovery with long jumpBooking error numbersBasic Characteristics - Error RecoveryBasic Characteristics - Error RecoveryInstructions - BookErrNo370 RAPID reference manual - part 1a, Instructions A-R