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OMIOCNC Offline Controller Parameter Definition Guide

This document defines all editable parameters for the OMIOCNC offline controller. The parameter file is fully editable but must follow the formatting rules below. Each parameter has a predefined default value and a valid range — please stay within the specified range. If you are unsure about a parameter's purpose, keep the default value.

Parameter File Editing Rules

  • Only one parameter per line.
  • Format: #parameter_number=value. The # must be the very first character on the line, followed immediately by the parameter number, then =, then the value.
  • Any explanatory text after the value assignment is optional and unrestricted.
  • Each parameter has a defined assignment range — strictly follow the specified range.
  • Each parameter comes with a preset default value. Keep the default unless you fully understand its purpose.

1. Motor Configuration Parameters

Param # Definition Default Unit Range Notes
#33 Motor start speed 50 mm/min 0–200 First step speed of motor
#34 X-axis pulse equivalent 640 pulses/mm 100–10000
#35 Y-axis pulse equivalent 640 pulses/mm 100–10000
#36 Z-axis pulse equivalent 640 pulses/mm 100–10000
#38 A-axis pulse equivalent 640 pulses/degree 100–10000
#390 X-axis direction level 0 BOOL 1/0 Direction signal level when axis coordinate increases
#391 Y-axis direction level 0 BOOL 1/0
#392 Z-axis direction level 1 BOOL 1/0
#393 A-axis direction level 0 BOOL 1/0
#416 Direction-to-pulse interval 300 ns 0–#417 Direction leads pulse
#417 Pulse signal width 2000 ns 0–10s Pulse width includes #416 value
#418 X-axis pulse level 0 BOOL 1/0 Pulse level signal; CP signal value when no pulse
#419 Y-axis pulse level 0 BOOL 1/0
#420 Z-axis pulse level 1 BOOL 1/0
#421 A-axis pulse level 0 BOOL 1/0

2. Manual Control Motion Parameters

Param # Definition Default Unit Range Notes
#41 X-axis manual max speed 16000 mm/min 0–20000 Upper limit for manual speed override adjustment
#42 Y-axis manual max speed 16000 mm/min 0–20000
#43 Z-axis manual max speed 16000 mm/min 0–20000
#44 A-axis manual max speed 16000 deg/min 0–20000
#45 X-axis manual start acceleration 600 mm/s² 0–2000 Start acceleration for manual motion
#46 Y-axis manual start acceleration 600 mm/s² 0–2000
#47 Z-axis manual start acceleration 600 mm/s² 0–2000
#48 A-axis manual start acceleration 600 deg/s² 0–2000
#100 X-axis manual speed 8000 mm/min 0–20000 Panel key jog speed for continuous motion
#101 Y-axis manual speed 8000 mm/min 0–20000
#102 Z-axis manual speed 4000 mm/min 0–20000
#103 A-axis manual speed 12000 deg/min 0–20000
#263 X-axis manual stop acceleration 1200 mm/s² 0–2000 Stop acceleration; can be set higher
#264 Y-axis manual stop acceleration 1200 mm/s² 0–2000
#265 Z-axis manual stop acceleration 1200 mm/s² 0–2000
#266 A-axis manual stop acceleration 1200 deg/s² 0–2000

3. Auto Processing Parameters

Param # Definition Default Unit Range Notes
#15 Processing speed selection 1 BOOL 1/0 0: program-defined; 1: default feed speed
#76 Default processing speed 1500 mm/min 0–20000
#77 Processing speed limit 8000 mm/min 0–30000 Limits actual speed after feed override adjustment
#78 Z-axis lift protection speed 3000 mm/min 0–20000 Independent speed limits for Z-axis
#79 Z-axis lower protection speed 3000 mm/min 0–20000
#80 G0 command speed 5000 mm/min 0–20000 Rapid traverse speed
#82 Z-axis return-to-zero safe height 5 mm 0–500 Auto lift height after processing ends
#89 Z-axis retract distance on pause 5 mm 0–99 Cannot be negative
#99 Processing linear acceleration 500 mm/min² 0–2000 Tangential acceleration
#435 X-axis processing protection speed 8000 mm/min 0–20000 X-axis speed protection
#436 Y-axis processing protection speed 8000 mm/min 0–20000 Y-axis speed protection

4. Coordinate System Parameters

Param # Definition Default Unit Range Notes
#16 Current coordinate system 1 BOOL 0–6 0–5: G54–G59; 6: MACH

5. Spindle Parameters

Param # Definition Default Unit Range Notes
#98 Maximum spindle speed 24000 rpm 0–50000 Full-scale speed corresponding to max PWM/voltage
#220 Spindle speed selection 1 BOOL 1/0 0: program-defined; 1: default speed
#221 Default spindle speed 12000 rpm 0–50000
#222 Program response to M3/M4/M5 1 BOOL 1/0 1: respond; 0: ignore
#224 M command response duration 3 s 0–100 Time allowed for spindle response
#227 Spindle ON active level 1 BOOL 1/0 Output level when spindle is ON
#422 Spindle PWM pulse level 0 BOOL 1/0 Output level at zero speed: 0 = 0V, 1 = 10V
#433 PWM ramp-up rate 1111 time unit 1–65535 Ramp-up time to full scale = #433 × 0.0005 s

6. I/O Output Parameters

Param # Definition Default Unit Range Notes
#223 M command response (M8/M9/M10/M11) 1 BOOL 1/0 0: ignore; 1: respond
#225 Coolant delay (M8/M9) 1 s 1–20 Delay after M8/M9/M10/M11 before executing next command
#226 Lubrication delay (M10/M11) 1 s 1–20
#228 Coolant ON active level 1 BOOL 1/0 Affects M8/M9 output
#229 Lubrication ON active level 1 BOOL 1/0 Affects M10/M11 output

7. Homing Function Parameters

Param # Definition Default Unit Range Notes
#52 X-axis homing enable 1 BOOL 1/0 0: disabled; 1: enabled. Affects HOME search for mechanical zero
#53 Y-axis homing enable 1 BOOL 1/0
#54 Z-axis homing enable 1 BOOL 1/0
#55 A-axis homing enable 1 BOOL 1/0
#56 X-axis homing speed 8000 mm/min 1–20000 Single-axis speed during HOME search
#57 Y-axis homing speed 8000 mm/min 1–20000
#58 Z-axis homing speed 8000 mm/min 1–20000
#59 A-axis homing speed 8000 mm/min 1–20000
#60 X-axis homing signal polarity 0 BOOL 1/0 Active level selection for HOME mechanical zero switch
#61 Y-axis homing signal polarity 0 BOOL 1/0
#62 Z-axis homing signal polarity 0 BOOL 1/0
#63 A-axis homing signal polarity 0 BOOL 1/0
#83 X-axis homing retreat distance 10 mm 0–1000 Distance each axis backs off from home switch after homing
#84 Y-axis homing retreat distance 10 mm 0–1000
#85 Z-axis homing retreat distance 10 mm 0–1000
#86 A-axis homing retreat distance 10 mm 0–1000

8. Tool Setting Parameters

Param # Definition Default Unit Range Notes
#68 Tool setting enable 1 BOOL 1/0 0: disabled; 1: enabled
#69 Tool setter thickness 20 mm 0–200
#70 Tool setting signal level 0 BOOL 1/0 Active level for tool setter input signal
#71 Tool setting position mode 0 BOOL 1/0 0: current position; 1: fixed position
#72 Fixed position X coordinate 0 mm 0–9999 Tool setter X position in machine coordinates
#73 Fixed position Y coordinate 0 mm 0–9999 Tool setter Y position in machine coordinates
#74 Fixed position Z coordinate 0 mm 0–9999 Z height above XY plane before tool setting
#75 Retreat distance after tool setting 10 mm 0–200 Distance to back off after touching tool setter

9. Hard Limit Switch Parameters

Param # Definition Default Unit Range Notes
#400 X-axis negative hard limit enable 1 BOOL 1/0 0: invalid; 1: valid
#401 Y-axis negative hard limit enable 1 BOOL 1/0 0: invalid; 1: valid
#402 Z-axis negative hard limit enable 1 BOOL 1/0 0: invalid; 1: valid
#403 A-axis negative hard limit enable 1 BOOL 1/0 0: invalid; 1: valid
#404 X-axis positive hard limit enable 1 BOOL 1/0 0: invalid; 1: valid
#405 Y-axis positive hard limit enable 1 BOOL 1/0 0: invalid; 1: valid
#406 Z-axis positive hard limit enable 1 BOOL 1/0 0: invalid; 1: valid
#407 A-axis positive hard limit enable 1 BOOL 1/0 0: invalid; 1: valid
#408 X-axis negative limit active level 0 BOOL 1/0 1: high active; 0: low active
#409 Y-axis negative limit active level 0 BOOL 1/0 1: high active; 0: low active
#410 Z-axis negative limit active level 0 BOOL 1/0 1: high active; 0: low active
#411 A-axis negative limit active level 0 BOOL 1/0 1: high active; 0: low active
#412 X-axis positive limit active level 0 BOOL 1/0 1: high active; 0: low active
#413 Y-axis positive limit active level 0 BOOL 1/0 1: high active; 0: low active
#414 Z-axis positive limit active level 0 BOOL 1/0 1: high active; 0: low active
#415 A-axis positive limit active level 0 BOOL 1/0 1: high active; 0: low active

10. Soft Limit Parameters

Param # Definition Default Unit Range Notes
#374 Soft limit enable 0 BOOL 1/0 0: disabled; 1: enabled
#375 X-axis negative soft limit -400 mm -2000–0 Triggers limit when exceeded in negative direction. Values refer to machine coordinates, not workpiece coordinates.
#376 Y-axis negative soft limit -400 mm -2000–0
#377 Z-axis negative soft limit -400 mm -2000–0
#378 A-axis negative soft limit -400 mm -2000–0
#379 X-axis positive soft limit 400 mm 0–2000 Triggers limit when exceeded in positive direction. Values refer to machine coordinates.
#380 Y-axis positive soft limit 400 mm 0–2000
#381 Z-axis positive soft limit 400 mm 0–2000
#382 A-axis positive soft limit 400 mm 0–2000

11. MPG Handwheel Parameters

Param # Definition Default Unit Range Notes
#428 MPG hardware reset enable 1 BOOL 1/0 0: disabled; 1: enabled
#429 MPG hardware reset active level 0 BOOL 1/0 Reset active level
#431 MPG resolution 0 BOOL 1/0 0: 100 steps/rev; 1: 24 steps/rev
#432 Standard MPG I/O active level 0 BOOL 1/0 Active level for each control bit

12. Expansion Function Parameters

Param # Definition Default Unit Range Notes
#423 Expansion hardware reset enable 1 BOOL 1/0 0: disabled; 1: enabled
#424 Expansion hardware reset active level 0 BOOL 1/0
#425 Expansion start/stop key enable 1 BOOL 1/0 0: disabled; 1: enabled
#426 Expansion START active level 0 BOOL 1/0
#427 Expansion PAUSE active level 0 BOOL 1/0

13. Backlash Compensation Parameters

Param # Definition Default Unit Range Notes
#437 X-axis backlash compensation enable 0 BOOL 1/0 When enabled, each direction change will first travel the set backlash distance empty.
#438 Y-axis backlash compensation enable 0 BOOL 1/0
#439 Z-axis backlash compensation enable 0 BOOL 1/0
#440 A-axis backlash compensation enable 0 BOOL 1/0
#441 X-axis backlash distance 0 mm 0–200 Set according to actual mechanical backlash of each axis.
#442 Y-axis backlash distance 0 mm 0–200
#443 Z-axis backlash distance 0 mm 0–200
#444 A-axis backlash distance 0 mm 0–200
#445 Backlash compensation speed 0 mm/min 0–2000

14. Other Parameters

Param # Definition Default Unit Range Notes
#1 Language setting 1 BOOL 1/0 0: English; 1: Chinese
#2 Interface refresh delay during processing 400 – 400–10000 For general relief files, set to 400. For small segment files, increase appropriately. Strongly recommended value: 4000.
#499 User permission key 888888 NA 0–999999

G-Code Instruction Set

Code Name Definition Example
G0 Rapid positioning Move to specified position at maximum system speed G0 X.. Y.. Z..
G1 Linear cutting Move to specified position at system or file-defined F value G1 X.. Y.. Z.. F..
G2 Clockwise arc cutting Clockwise circular interpolation Radius: G2 X..Y..Z..R..F.. / Center: G2 X..Y..Z..I..J..K..F..
G3 Counterclockwise arc cutting Counterclockwise circular interpolation Radius: G3 X..Y..Z..R..F.. / Center: G3 X..Y..Z..I..J..K..F..
G17 XY plane selection Select XY plane for interpolation G17
G18 ZX plane selection Select ZX plane for interpolation G18
G19 YZ plane selection Select YZ plane for interpolation G19
G20 Inch units Select inch as length unit G20
G21 Metric units Select metric as length unit G21
G54 G54 coordinate system Select G54 workpiece coordinate system G54
G55 G55 coordinate system Select G55 workpiece coordinate system G55
G56 G56 coordinate system Select G56 workpiece coordinate system G56
G57 G57 coordinate system Select G57 workpiece coordinate system G57
G58 G58 coordinate system Select G58 workpiece coordinate system G58
G59 G59 coordinate system Select G59 workpiece coordinate system G59
G81 Drilling cycle Standard drilling cycle G81 X..Y..Z..R..F..
G82 Drilling cycle with dwell Drilling cycle with pause at bottom G82 X..Y..Z..R..P..F..
G83 Peck drilling cycle Deep hole peck drilling cycle G83 X..Y..Z..R..I..F..
G90 Absolute dimension Absolute coordinate mode G90 X..Y..
G91 Incremental dimension Incremental coordinate mode G91 X..Y..
G98 Return to R point Return to R point in fixed cycle with timed feed
G99 Fixed cycle Used with G81/G82/G83

Note: ".." represents actual user-set values.

M-Code Instruction Set

Code Name Definition Example
M3 Spindle forward rotation Set spindle forward output control signal active M3
M5 Spindle stop Set spindle forward output control signal inactive M5
M8 Coolant start Set coolant output control signal active M8
M9 Coolant stop Set coolant output control signal inactive M9
M10 Lubrication ON Set lubrication output control signal active M10
M11 Lubrication OFF Set lubrication output control signal inactive M11
Tags: technical reference parameter guide offline controller