Nor-Cal SDC15 Controller - Manual (Page 30)

■ User level
The user level of this unit can be selected from three levels, "Simple
configuration", "Standard configuration", and "High function configuration" using
the user level of the setup setting "C79".
For details,
refer to Chapter 6, LIST OF DISPLAYS AND SETTING DATA.
Handling Precautions
Even though the user level is changed, the functions other than setting
display cannot be changed. The user level is set to "Standard
configuration" or "High function configuration" and more advanced
functions are set. After that, when the setup is returned to "Simple
configuration", this function setup cannot be displayed, but the function
itself is operated.
2-8
Chapter 2. OUTLINE OF FUNCTIONS