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.. _safety_flags:
Safety Flags
============
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The safety flags are represented in software by the following enums
.. doxygenenum :: safety_flag
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The safety flags can be temporarily or permanent. Some temporary flags are reset automatically, once the error condition disappears. Others have to be explicitly cleared.
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The safety weights (if a flag stops the PID controller, or triggers the panic mode) are configured by default as described below. However, it will be possible to override these weights by
setting config entries in the safety memory.
.. todo :: Change docu of config entires in memory
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----------------------------------------------------------------------------------------------------------------------------------
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.. _safety_flags_adc_overflow:
ERR_FLAG_MEAS_ADC_OVERFLOW
--------------------------
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`` ERR_FLAG_MEAS_ADC_OVERFLOW `` is triggered in case of an overflow in the signal path of the measurement ADC. This should never happen unless there is a bug in the software.
========== ============= ============= ===========
persistent self-clearing Stops PID Panic Mode
========== ============= ============= ===========
yes no yes no
========== ============= ============= ===========
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----------------------------------------------------------------------------------------------------------------------------------
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.. _safety_flags_adc_off:
ERR_FLAG_MEAS_ADC_OFF
---------------------
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`` ERR_FLAG_MEAS_ADC_OFF `` signals that the measurement ADC for the PT1000 sensor is deactivated. This flag is automatically cleared by the firmware
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once the ADC is started.
========== ============= ============= ===========
persistent self-clearing Stops PID Panic Mode
========== ============= ============= ===========
no yes yes no
========== ============= ============= ===========
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----------------------------------------------------------------------------------------------------------------------------------
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.. _safety_flags_adc_watchdog:
ERR_FLAG_MEAS_ADC_WATCHDOG
--------------------------
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`` ERR_FLAG_MEAS_ADC_WATCHDOG `` is used as a wire break detection mechanism. This flag is set when the PT1000 measurement ADC detects an invalid resistance measurement.
.. seealso :: :ref: `ADC Watchdog<firmware_meas_adc_watchdog>`
========== ============= ============= ===========
persistent self-clearing Stops PID Panic Mode
========== ============= ============= ===========
no no yes no
========== ============= ============= ===========
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----------------------------------------------------------------------------------------------------------------------------------
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.. _safety_flags_adc_unstable:
ERR_FLAG_MEAS_ADC_UNSTABLE
--------------------------
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`` ERR_FLAG_MEAS_ADC_UNSTABLE `` is set after startup of the PT1000 measuremnt or after reconfiguring the filter settings.
.. seealso :: :ref: `firmware_meas_adc_filter`
========== ============= ============= ===========
persistent self-clearing Stops PID Panic Mode
========== ============= ============= ===========
no yes no no
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========== ============= ============= ===========
.. _safety_flags_safety_mem_corrupt:
ERR_FLAG_SAFETY_MEM_CORRUPT
---------------------------
`` ERR_FLAG_SAFETY_MEM_CORRUPT `` is set during the initialization of the controller, in case a corrupted safety memory is encountered.
In this case the error memory is reinitialized and the flag is set in the error memory. Afer a reboot it will stay asserted until the
safety backup memory is cleared
.. seealso :: :ref: `backup_ram`
========== ============= ============= ===========
persistent self-clearing Stops PID Panic Mode
========== ============= ============= ===========
yes no yes no
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========== ============= ============= ===========
.. _safety_flags_stack:
ERR_FLAG_STACK
---------------------------
`` ERR_FLAG_STACK `` ialization of the controller, in case a corrupted safety memory is encountered.
This error is not recoverable and will trigger the panic mode.
.. seealso :: :ref: `safety_stack_checking`
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persistent self-clearing Stops PID Panic Mode
========== ============= ============= ===========
yes no yes yes
========== ============= ============= ===========
