Automatic Tune Mode:
This mode allows the activation deactivation of Pre-Tune and Self-Tune.
To enter this mode:
Press and hold down 
then press 
then release both buttons.
Press or 
until upper display Atun and lower display SLCt.
If ULoc is displayed is displayed in the lower display:
Press and use or to enter the appropriate Unlock Code (ULoc) for the Auto Tune Mode. (Default as shipped is 0 - not locked)
Press to enter the Automatic Tune Mode.
Adjustable parameters are as follows:
Ptun (Pre-tune): On/Off (Process must be further than 5% of span from setpoint and setpoint cannot be ramping to allow this parameter to be set to On)
Stun (Self-tune): On/Off
TLoc (Tuning Lock Code) Change this numeric value and you are limiting acces to the Automatic Tuning Mode to personnel that know the Automatic Tune Mode Lock Code.
Use or to change the values of the parameters.
Reverts to operator mode after 2 minutes of inactivity.