System Messages - Numerical List eV+Language Reference Guide, v2.x, 18319-000 Rev A Page 668 Code Message Text -425 *Calibration program not loaded* -426 *Can't find calibration program file* -450 *Can't interpret line* -451 *Unexpected text at end of line* -452 *Unknown instruction* -453 *Ambiguous name* -454 *Missing argument* -455 *Invalid program or variable name* -456 *Invalid number format* -457 *Reserved word illegal* -458 *Illegal expression syntax* -459 *Missing parenthesis* -460 *Missing quote mark* -461 *Invalid format specifier* -462 *Unknown function* -463 *Invalid statement label* -464 *Duplicate statement label* -465 *Variable type mismatch* -466 *Illegal use of belt variable* -467 *Illegal .PROGRAM statement*