During autotuning, the output TRI is turned up two actuating pulses. An actuating impulse is identified by two parameters: its time duration (tmax) and its amplitude (step_ampl).

The following value ranges are valid for these parameters: tmax greater than 4 seconds and step_ampl greater than 1 % of the output scale (out_inf, out_sup). The function also monitors even if the TRI output exceeds the threshold for the output scale.

The check occurs when autotune is started.

The controller can be modulated for each value in the performance index.

The ERROR: - An internal tag " " was added during translation.perf parameter varies between 0 and 1, which enables the perfparameter to stabilize close to 0 or perf to be set close to 1 to achieve a more dynamic setting (and therefore optimize the response time of disturbance variables).

The perf. performance index varies between 0 and 1, which enables the perf. parameter to stabilize close to 0 or to achieve a more dynamic control (and therefore optimize the reaction time of disturbance variables), if the perf. is set close to 1.

If this bit is set to 1, the function is activated. At the end of the setting process, this bit must be manually set to 0. If it has just been set automatically, setting the bit to 0 allows the function to be stopped. The PARA_C then retain the last active value. In the example below, the START bit is automatically reset by the program at the end of the setting process.

A modification of this bit value enables the exchange of current and previous parameters assuming that no controlling has occurred up to the given time (two consecutive modifications of this bit give the original configuration).

The diagnosis data for the autotune is saved in a double word. The value of this word is retained until autotune is restarted. Additional details on this double word can be found in the Diagnosis section.