Supported Codes and Parser Capabilities

The Supported Codes and Parser Capabilities section describes the full functionality of the G-code interpreter in NCPlayer, including supported command formats, modal groups, macro programming, arithmetic, conditions, loops, and advanced functions. The parser is designed to work with FANUC-style programs (specifically 0i-MB) but is also compatible with other controllers when properly configured.

1. Supported G/M Code Formats

• G-codes:
  • Standard modal groups:
    • G0 — rapid positioning.
    • G1 — linear interpolation.
    • G2 / G3 — circular interpolation CW/CCW with support for:
      • R parameter (arc radius).
      • I, J, K parameters (arc center in ABS or INC mode).
      • G17, G18, G19 planes.
    • G17 / G18 / G19 — plane selection.
    • G20 / G21 — unit selection (inch/mm).
    • G40 / G41 / G42 — cutter radius compensation.
    • G43 / G44 — tool length compensation.
    • G49 — cancel tool length compensation.
    • G54 – G59 — work coordinate systems (including extended G54.1 Px).
    • G90 / G91 — absolute / incremental mode.
    • G98 / G99 — return in drilling cycles (initial point / R-plane).
  • Drilling cycles: G73, G74, G76, G80, G81, G82, G83 with support for X, Y, Z, R, Q, F parameters.
  • Special codes: G65 (custom macro simple call with arguments).
• M-codes:
  • Spindle control: M3, M4, M5.
  • Coolant control: M7, M8, M9.
  • Program stops: M0, M1, M2, M30.
  • Subprogram handling: M98 (call), M99 (return).

2. Macro Programming Support

• Local variables: #1 – #33 (reset on M99 if the parameter is enabled).
• Common variables: #100 – #199.
• Global variables: #500 – #531.
• System variables: according to FANUC (e.g., #5001 for current X position).
• Mathematical operations:
  • Addition, subtraction, multiplication, division, exponentiation.
  • Parentheses precedence and nested calculations.
• FANUC functions:
  • SIN, COS, TAN, ASIN, ACOS, ATAN.
  • ABS, ROUND, FIX, FUP, MOD, SQRT.
  • Support for nested functions, e.g., SIN[FIX[#100+0.4]].
• Address substitution in commands: X[#500], F[#101+10], etc.

3. Logical Constructs

• IF [condition] GOTO Nxxx — jump to line number.
• IF [condition] THEN ... — execute command if condition is true.
• Logical operators: AND, OR, XOR (nested conditions up to 3 levels).
• Comparisons: EQ, NE, GT, LT, GE, LE.
• WHILE [condition] DOx ... ENDx — conditional loops.
• Loop counters and infinite loop protection.

4. Subprograms

• Subprogram definition: Oxxxx.
• Call: M98 Pxxxx Lnn — with L argument support.
• Return: M99 (with local variable reset if the parameter is enabled).
• Support for G65 Pxxxx with argument passing (A, B, C... H, I, etc.) directly into local variables.
• Recursive calls with stack depth control.

5. Other Features

• Support for both absolute (G90) and incremental (G91) modes within the same program.
• Automatic code normalization: spacing alignment, removal of extra EOBs, correct comment handling.
• Direct arc format conversion:
  • R → IJK (ABS or INC mode).
  • IJK → R.
• Parsing with pre-substitution of variables before simulation.
• Inline expansion of subprograms for full toolpath simulation.