Siemens SINUMERIK codes
AxisMD

axismd.ai

Siemens SINUMERIK Controller

Servo/Axis · Intermediate · 30-60 minutes

Alarm 61801

Siemens 840D 61801 - Channel block: Wrong G code selected

In the program call CYCLE300<value> an impermissible numerical value was programmed for the entered CNC System, or in the Cycles Setting Datum an incorrect value for the G Code System was set.

Siemens SINUMERIKServo/AxisIntermediate30-60 minutes

61801

Siemens 840D 61801 - Channel block: Wrong G code selected

Channel block: Wrong G code selected

In the program call CYCLE300<value> an impermissible numerical value was programmed for the entered CNC System, or in the Cycles Setting Datum an incorrect value for the G Code System was set.

Safety

  • Refer to Siemens documentation
  • Ensure qualified technician performs repairs

Common Causes

  • CYCLE300 parameter value outside valid range for the configured G-code system
  • Mismatch between programmed G-code dialect and Cycles Setting Datum configuration
  • Incorrect G-code system selection in machine parameters or control settings
  • Program uses G-code syntax not supported by current CNC system configuration
  • Cycles Setting Datum corrupted or pointing to incompatible G-code variant

Troubleshooting Steps

  1. 1Verify CYCLE300 parameter value in the NC program matches valid range for your configured G-code system (ISO metric vs. inch, etc.)
  2. 2Check Cycles Setting Datum configuration in control settings to confirm correct G-code system is selected for your machine
  3. 3Compare programmed G-code syntax against machine documentation to ensure compatibility with current system configuration
  4. 4Reload or reinitialize Cycles Setting Datum from backup or factory defaults if corruption is suspected
  5. 5Test with a known working program to isolate whether issue is system configuration or specific program syntax

Seeing Multiple Alarms?

Seeing another alarm with this one? Enter the code.

Get machine-aware diagnosis

AxisMD logs alarms against your actual machines, tracks patterns, and gives AI context your manual doesn't have.

Start free

Was this guide helpful?

Always verify with your machine manual or a certified technician before performing service procedures.