Siemens SINUMERIK codes
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Siemens SINUMERIK Controller

Servo/Axis · Intermediate · 20-45 minutes

Alarm 12190

Siemens 840D 12190 - Channel block variable of type ARRAY has too many dimensions

Array with variables of type STRING may be no more than 1-dimensional, and with all other variables no more than 2-dimensional.

Siemens SINUMERIKServo/AxisIntermediate20-45 minutes

12190

Siemens 840D 12190 - Channel block variable of type ARRAY has too many dimensions

Channel block variable of type ARRAY has too many dimensions

Array with variables of type STRING may be no more than 1-dimensional, and with all other variables no more than 2-dimensional.

Safety

  • Refer to Siemens documentation
  • Ensure qualified technician performs repairs

Common Causes

  • Program declares a 3D or higher dimensional array when only 1D or 2D is supported
  • STRING array defined with more than 1 dimension
  • Incorrect array syntax in NC program or subroutine
  • Array declaration copied from incompatible source without dimension adjustment
  • Use of nested array structures that exceed dimension limits

Troubleshooting Steps

  1. 1Review the NC program at the specified block number and identify the array variable declaration
  2. 2Check array dimensions: STRING arrays must be 1D max; all other data types must be 2D max
  3. 3Modify the array declaration to reduce dimensions or restructure the data storage approach
  4. 4If complex data structures are needed, consider using multiple 2D arrays instead of 3D arrays
  5. 5Recompile and load the corrected program, then verify the alarm clears

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