====Enumeration====

An enumeration sits somewhere between a [[digital|digital]] value and an [[analogue|analogue]] one.

They are often a number that represents a particular state or message. Where a [[status|status]] property can handle simple on/off statuses, the //enumeration// type can be used if your system can be in any one of three-or-more states.

For example, a machine such as pump that may go through many different stages of starting up and stopping may provide a single number to represent that status - this is an //enumeration//.

^Number^State^
|0|Offline / Not Running|
|1|Starting|
|2|Started|
|3|Stopping|
|4|Failed|

If you have a very large enumeration - often found if you have status or fault codes for your devices - you should consider using a [[lookup|lookup]] value instead. These are better suited to large numbers of options.