Siemens SINUMERIK codes
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Siemens SINUMERIK Controller

Servo/Axis · Intermediate · 30-60 minutes

Alarm 7202

Siemens 840D 7202 - Missing option bit for: <hex>

Alarm for SIEMENS compile cycles. This alarm appears when the option bit required for a SIEMENS compile cycle is not set.

Siemens SINUMERIKServo/AxisIntermediate30-60 minutes

7202

Siemens 840D 7202 - Missing option bit for: <hex>

Missing option bit for: <hex>

Alarm for SIEMENS compile cycles. This alarm appears when the option bit required for a SIEMENS compile cycle is not set.

Safety

  • Refer to Siemens documentation
  • Ensure qualified technician performs repairs

Common Causes

  • Option bit not activated in machine parameters or control configuration
  • Software license for the required feature has expired or is not installed
  • Incorrect or incomplete control system firmware version
  • Machine parameter settings do not match the compiled cycle requirements
  • Control system backup or parameter file restored without proper option configuration

Troubleshooting Steps

  1. 1Verify the specific option bit requirement by reviewing the alarm message parameters (%1 and %2) and cross-reference with the cycle documentation
  2. 2Access machine parameters via HMI or SINUMERIK software and confirm all required option bits are activated for the compile cycle being used
  3. 3Check installed software licenses and feature keys in the control system to ensure the feature corresponding to the missing option bit is licensed and active
  4. 4Compare current control system firmware version against cycle requirements; update firmware if necessary and reconfigure option bits after update
  5. 5If parameters were recently restored from backup, manually re-enable required option bits or restore from a backup that includes proper option configuration

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Always verify with your machine manual or a certified technician before performing service procedures.