Siemens SINUMERIK codes
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Siemens SINUMERIK Controller

Servo/Axis · Basic · 10-20 minutes

Alarm 14090

Siemens 840D 14090 - Channel block invalid D number

A value less than zero has been programmed under address D. A set of parameters with 25 correction values has been automatically assigned to each active tool. Each tool can have 9 sets of parameters (D1 - D9, initial setting is D1). When the D number changes, the new parameter set is active (D0 is u

Siemens SINUMERIKServo/AxisBasic10-20 minutes

14090

Siemens 840D 14090 - Channel block invalid D number

Channel block invalid D number

A value less than zero has been programmed under address D. A set of parameters with 25 correction values has been automatically assigned to each active tool. Each tool can have 9 sets of parameters (D1 - D9, initial setting is D1). When the D number changes, the new parameter set is active (D0 is u

Safety

  • Refer to Siemens documentation
  • Ensure qualified technician performs repairs

Common Causes

  • Negative D number programmed in NC code (D values must be positive integers D1-D9)
  • Typo or syntax error in part program with minus sign before D address
  • Incorrect tool offset group selection using D0 instead of valid D1-D9 range
  • CAM post-processor generating invalid D number values in output file
  • Memory corruption or file transfer error causing malformed D address data

Troubleshooting Steps

  1. 1Review the NC program at the indicated block number and verify D address value is positive and within valid range D1-D9
  2. 2Check CAM post-processor settings and regenerate part program to ensure correct D offset group syntax
  3. 3Load a known-good program to rule out machine parameter or control issues
  4. 4Verify part program file integrity by comparing source CAM output against loaded code using editor or list function
  5. 5If error persists across multiple programs, backup and reload control software or contact Siemens service for potential memory issue

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