Process parameter
Parameters can be found via Library > Parameters and are the basic unit of processes and correspond to options which can be changed in the process and which are available on the equipment module. Parameters can be defined (selected) on the equipment module or can be defined on the process. Parameters have to be defined first here
Parameters can be grouped via the parameter type to share the same set of units, different time or temperature parameters (for example Temperature (front) or Temperature (back) can be grouped as these are both parameters of the type "Temperature".
Parameter type
A parameter type (for example temperature, time) can be found via Library > Parameters types and can group single parameters so units can be shared. Units (K, C, F) can be selected per parameter type so when a parameter of a type is chosen only a sub-set of units is available.
For temperature many parameters might be chosen, as many equipment have more then 1 temperature sensors on different places. By grouping these parameters via the parameter type the software can limit the units