What causes Siemens SINUMERIK alarm 17110?

Index value in $A_OUT array exceeds the maximum number of digital outputs defined in machine data 10360. Incorrect NCK program syntax attempting to access non-existent digital output channels. Machine data 10360 (FASTIO_DIG_NUM_outputs) not properly configured for installed hardware. Software mismatch between NC program expectations and actual I/O configuration.

How do I fix Siemens SINUMERIK alarm 17110?

1. Verify the index [n] used in $A_OUT [n] command does not exceed the value set in machine data 10360 FASTIO_DIG_NUM_OUTPUTS 2. Review the NC program block %2 in channel %1 and identify which digital output index is being accessed 3. Check machine data 10360 to confirm it reflects the actual number of installed digital outputs on connector X121 4. Modify the NC program to use valid output indices (0 to FASTIO_DIG_NUM_OUTPUTS minus 1) or increase machine data 10360 if additional outputs are installed 5. Power cycle the control and verify the NC program executes without the alarm

Siemens SINUMERIK codes

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Siemens SINUMERIK Controller

Servo/Axis · Intermediate · 20-40 minutes

Alarm 17110

Siemens 840D 17110 - Channel block digital output no. not activated

An attempt was made to read or set a digital NCK output (connector X 121) via the system variable $A_OUT [n] with the index [n] greater than the specified upper limit in the NCK machine data 10360 FASTIO_DIG_NUM_OUTPUTS.

Siemens SINUMERIKServo/AxisIntermediate20-40 minutes

17110

Siemens 840D 17110 - Channel block digital output no. not activated

Channel block digital output no. not activated

Safety

Refer to Siemens documentation
Ensure qualified technician performs repairs

Common Causes

Index value in $A_OUT array exceeds the maximum number of digital outputs defined in machine data 10360
Incorrect NCK program syntax attempting to access non-existent digital output channels
Machine data 10360 (FASTIO_DIG_NUM_outputs) not properly configured for installed hardware
Software mismatch between NC program expectations and actual I/O configuration

Troubleshooting Steps

1Verify the index [n] used in $A_OUT [n] command does not exceed the value set in machine data 10360 FASTIO_DIG_NUM_OUTPUTS
2Review the NC program block %2 in channel %1 and identify which digital output index is being accessed
3Check machine data 10360 to confirm it reflects the actual number of installed digital outputs on connector X121
4Modify the NC program to use valid output indices (0 to FASTIO_DIG_NUM_OUTPUTS minus 1) or increase machine data 10360 if additional outputs are installed
5Power cycle the control and verify the NC program executes without the alarm

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