Siemens SINUMERIK codes
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Siemens SINUMERIK Controller

Program/G-code · Intermediate · 30-120 minutes

Alarm 20074

Siemens 20074 - Axis wrong index position

For a concurrent positioning axis declared as indexing axis, the PLC has given an index number that is not available in the table Control reaction: Alarm display. Alarms.

Siemens SINUMERIKProgram/G-codeIntermediate30-120 minutes

20074

Siemens 20074 - Axis wrong index position

Axis wrong index position

For a concurrent positioning axis declared as indexing axis, the PLC has given an index number that is not available in the table Control reaction: Alarm display. Alarms.

Safety

  • Only qualified personnel should diagnose and clear control alarms; follow the machine builder's safety procedures and lockout/tagout where hardware work is required.

Common Causes

  • For a concurrent positioning axis declared as indexing axis, the PLC has given an index number that is not available in the table

Troubleshooting Steps

  1. 1Please inform the authorized personnel/service department.
  2. 2Check the indexing axis number given by the PLC and correct this if necessary.
  3. 3If the indexing axis number is correct and the alarm results from an indexing position table that has been set too short, check the machine data for indexing axis declaration.
  4. 4Modify MD30500 $MA_INDEX_AX_ASSIGN_POS_TAB Modify MD10900 $MN_INDEX_AX_LENGTH_POS_TAB_1 Modify MD10910 $MN_INDEX_AX_POS_TAB_1 Modify MD10920 $MN_INDEX_AX_LENGTH_POS_TAB_2 Modify MD10930 $MN_INDEX_AX_POS_TAB_2
  5. 5Alarm display showing cause of alarm disappears. No further operator action necessary

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