What causes Siemens SINUMERIK alarm 16790?

Part program contains an illegal or unsupported command for the current machine configuration. Channel or axis configuration does not support the programmed function. Required machine option not enabled for the commanded function. Axis assignment or transformation configuration error. Program execution sequence error.

How do I fix Siemens SINUMERIK alarm 16790?

1. Identify the program block that triggered the alarm — note the channel and block number. 2. Review the commanded function against the SINUMERIK programming manual. 3. Check if the required machine option is enabled for this function. 4. Verify axis assignments and transformation settings are correct for the application. 5. Consult the Siemens SINUMERIK alarm manual for alarm 16790 specific remedy.

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Siemens SINUMERIK Controller

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

Alarm 16790

Siemens 840D 16790 - Channel block Parameter is zero or missing

This alarm occurs when a coupling is activated with a parameter set to zero or missing, such as a transmission ratio denominator or slave axis. Fix by identifying and correcting the parameter in the specified block.

Siemens SINUMERIKProgram/G-codeIntermediate30-120 minutes

16790

Siemens 840D 16790 - Channel block Parameter is zero or missing

Channel block Parameter is zero or missing

Root Cause Summary

This alarm occurs when a coupling is activated with a parameter set to zero or missing, such as a transmission ratio denominator or slave axis. Fix by identifying and correcting the parameter in the specified block.

Safety

Refer to Siemens documentation
Ensure qualified technician performs repairs

Causes and Fixes

1
Locate the block
Refer to the block number in the alarm message and open the program to that line.
2
Verify parameters
Check for missing or zero values in coupling parameters like transmission ratio or slave axis.
3
Correct and test
Update the parameter with a valid value, clear the alarm, and restart the program.

DIY Feasiblehigh confidence

Call a technician if:

·If the alarm persists after parameter and syntax corrections
·If documentation for coupling parameters is unclear or unavailable

Prevention

Validate coupling parameters before running the program
Use simulation mode to catch syntax errors early

Common Mistakes

Overlooking zero values in parameters
Misreading the block number in the alarm message

Seeing Multiple Alarms?

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