Siemens SINUMERIK codes
AxisMD

axismd.ai

Siemens SINUMERIK Controller

Parameter · Intermediate · 20-45 minutes

Alarm 12030

Siemens 840D 12030 - Channel block invalid parameter or data type in

In polynomial interpolation, polynomials must not be greater than the 3rd degree (refer to Programming Guide). f(p) = a0 + a1 p + a2 p2 + a3 p3 The coefficients a0 (the starting points) are identical to the end points of the preceding block and need not be programmed. In the polynomial block, a maxi

Siemens SINUMERIKParameterIntermediate20-45 minutes

12030

Siemens 840D 12030 - Channel block invalid parameter or data type in

Channel block invalid parameter or data type in

In polynomial interpolation, polynomials must not be greater than the 3rd degree (refer to Programming Guide). f(p) = a0 + a1 p + a2 p2 + a3 p3 The coefficients a0 (the starting points) are identical to the end points of the preceding block and need not be programmed. In the polynomial block, a maxi

Safety

  • Refer to Siemens documentation
  • Ensure qualified technician performs repairs

Common Causes

  • Polynomial degree exceeds 3rd order in interpolation block
  • Incorrect coefficient count or missing coefficients in polynomial definition
  • Invalid data type for polynomial coefficients (non-numeric values)
  • Coefficient a0 explicitly programmed when it should be derived from preceding block endpoint
  • Syntax error in polynomial parameter specification within the block

Troubleshooting Steps

  1. 1Verify polynomial equation in block %2 uses maximum 3rd degree (a0 + a1*p + a2*p² + a3*p³ format only)
  2. 2Check all coefficient values (a1, a2, a3) are numeric; remove any alphabetic or special characters
  3. 3Confirm a0 coefficient is omitted from programming as it automatically inherits from preceding block endpoint
  4. 4Review parameter syntax in %3 section; ensure proper spacing, decimal notation, and comma/semicolon delimiters match machine configuration
  5. 5Cross-reference block %2 against Programming Guide polynomial interpolation examples; validate complete coefficient set is present with no gaps

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.