A knowledge for all and a reference to all experience users, this is how a 3 decimal place numeric display properties should be set.

Number of digits is 5 and decimal places would be 3.

This is what the FactoryTalk Studio (non runtime should look like)

This is what a the numeric display at runtime looks like.

More examples….

This is a 5 “Number of Digits” with “Zeros” “Fill left with” and “Decimal place” is zero

And this is what it looks like in runtime.

Finally, this is a 5 “Number of Digits” with “None” for “Fill left with” and “Decimal place” is zero

And this is what it looks like in runtime.