Simulator Services 
You use the Simulator Services screen to edit, add, and delete tags and groups for your simulator instances.
You have already made a copy of the default Simulator data server instance or you created a new Simulator data server instance to which you can make changes.
A tag definition consists of the following:
Type
Analog
Returns float values such as 189.83.
Discrete
Returns 1 or 0.
String
X65 Returns values such as C23 and X65.
Minimum Value and Maximum Value
These values are used for server side scaling.
Writable
Allows you to write a new value to a tag name. For example, you can change a tag value to simulate a product changeover on a line. If tag Line1Product has a default value of X65, you can write a new value of ABC123 to it.
Note
If you change the Writable indicator from selected to not selected for a tag, the Value entry must be an expression.
Value
You can use the following values with operators and functions in an algorithm:
h
The current hour
m
The current minute
s
The current second
r
The current row of the result set
n
The total number of rows in the result set
For more information, see Simulator Tag Operators and Functions.
To edit your Simulator data server instance, on the SAP MII administration menu choose .
You must define at least one tag and assign it to a group.