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How can I change the number of decimal places?

For the value entry, a whole number is entered first.
If a decimal point position is necessary, this can be moved up or down (i.e. to left or right) by using <ENTER+UP> or <ENTER+DOWN>. In this case, the last decimal place must be a zero.

The decimal point is only present if the decimal place has been programmed for the display configuration. If this is not done, then the controller will round the entry up or down.
So there is a distinction made between the display and the value entry.
If, for instance, the setpoint is configured for the display with just a single decimal place, then a value that is entered with two decimal places will be rounded up or down to give only one decimal place.