The analog input 1 (AN1) can accept different types of signals. In order to 
correctly evaluate the signal, this parameter must be adjusted to match the  
signal source.
  Value  Analog reference signal
  0  0...±10 V DC, Rin=56 kOhm
  1  0...± 20 mA DC, Rin=250 Ohm
  2  4...20 mA DC, Rin=250 Ohm
Adjustment range:  0...2
Resolution:  1
Factory setting:  0   
Note:  Enter-Parameter
Special Adjustments