Siemens SINUMERIK codes
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Siemens SINUMERIK Controller

Parameter · Intermediate · 20-45 minutes

Alarm 12510

Siemens 840D 12510 - Channel block too many machine data

In the part program, in the machine data file (._TEA) and in the initialization file (._INI), no more than 2 machine data may be used per block. Example: N. N 100 $MN_OVR_FACTOR_FEEDRATE [10] = 15, $MN_OVR_FACTOR_FEEDRATE [11] = 20 N.

Siemens SINUMERIKParameterIntermediate20-45 minutes

12510

Siemens 840D 12510 - Channel block too many machine data

Channel block too many machine data

In the part program, in the machine data file (._TEA) and in the initialization file (._INI), no more than 2 machine data may be used per block. Example: N. N 100 $MN_OVR_FACTOR_FEEDRATE [10] = 15, $MN_OVR_FACTOR_FEEDRATE [11] = 20 N.

Safety

  • Refer to Siemens documentation
  • Ensure qualified technician performs repairs

Common Causes

  • Part program block contains more than 2 machine data assignments in a single line
  • Machine data file (_TEA) has multiple machine data declarations exceeding the 2-per-block limit
  • Initialization file (_INI) contains more than 2 machine data parameters in one block
  • Incorrect syntax combining multiple $MN_ parameters without proper block separation

Troubleshooting Steps

  1. 1Review the part program at the specified block number and identify all machine data assignments ($MN_ parameters) in that single line
  2. 2Count the machine data parameters in the problematic block; if more than 2 exist, separate excess assignments into additional sequential blocks
  3. 3Check the referenced machine data file (_TEA) and initialization file (_INI) for blocks exceeding the 2-per-block machine data limit and split as needed
  4. 4Verify proper block separation using line numbers (N-codes) between machine data assignments to ensure no more than 2 per block
  5. 5Reload the corrected program and verify the alarm clears on program restart

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