- 501 – TOO MANY ASSIGNMENTS IN ONE BLOCK
- 502 – [ OR = NOT FIRST TERM IN EXPRESSN
- 503 – ILLEGAL MACRO VARIABLE REFERENCE
- 504 – UNBALANCED BRACKETS IN EXPRESSION
- 505 – VALUE STACK ERROR
- 506 – OPERAND STACK ERROR
- 507 – TOO FEW OPERANDS ON STACK
- 508 – DIVISION BY ZERO
- 509 – ILLEGAL MACRO VARIABLE USE
- 510 – ILLEGAL OPERATOR OR FUNCTION USE
- 511 – UNBALANCED RIGHT BRACKETS
- 512 – ILLEGAL ASSIGNMENT USE
- 513 – VARIABLE REFERENCE NOT ALLOWED WITH N OR O
- 514 – ILLEGAL MACRO ADDRESS REFERENCE
- 515 – TOO MANY CONDITIONALS IN A BLOCK
- 516 – ILLEGAL CONDITIONAL OR NO THEN
- 517 – EXPRSN. NOT ALLOWED WITH N OR O
- 518 – ILLEGAL MACRO EXPRESSION REFERENCE
- 519 – TERM EXPECTED
- 520 – OPERATOR EXPECTED
- 521 – ILLEGAL FUNCTIONAL PARAMETER
- 522 – ILLEGAL ASSIGNMENT VAR OR VALUE
- 523 – CONDITIONAL REQUIRED PRIOR TO THEN
- 524 – END FOUND WITH NO MATCHING DO
- 525 – VAR. REF. ILLEGAL DURING MOVEMENT
- 526 – COMMAND FOUND ON DO/END LINE
- 527 – = NOT EXPECTED OR THEN REQUIRED
- 528 – PARAMETER PRECEDES G65
- 529 – ILLEGAL G65 PARAMETER
- 530 – TOO MANY I, J, or K’S IN G65
- 531 – MACRO NESTING TOO DEEP
- 532 – UNKNOWN CODE IN POCKET PATTERN
- 533 – MACRO VARIABLE UNDEFINED
- 534 – DO OR END ALREADY IN USE
- 535 – ILLEGAL DPRNT STATEMENT
- 536 – COMMAND FOUND ON DPRNT LINE
- 537 – RS-232 ABORT ON DPRNT
- 538 – MATCHING END NOT FOUND
- 539 – ILLEGAL GOTO
- 540 – MACRO SYNTAX NOT ALLOWED
- 541 – MACRO ALARM
- 542 – OPERATION NOT AVAILABLE