User`s guide

Using Analog I/O Drivers
4-33
A voltage range on the D/A converter is set to -10 to +10 volts, and the Block
input signal
is chosen as Normalized bipolar, then a Simulink signal of
amplitude -1 results in an output voltage of -10 volts. Similarly, a Simulink
signal of amplitude +1 results in an output voltage of +10 volts.
This may require that you adjust your signal amplitudes in Simulink using a
Gain block, Constant block, and Summer block depending on the selected
voltage range.