Technical data of CPU 31xC   
6.6 Technical data of the integrated I/O 
  CPU 31xC and CPU 31x, Technical Data 
6-40  Manual, 01/2006 Edition, A5E00105475-06 
Parameters of standard AI 
The table below gives you an overview of the parameters for standard analog inputs. 
Table 6-9  Parameters of standard AI 
Parameters  Value range  Default  Range of efficiency 
Integration time (ms) 
Interference suppression 
 (Hz) 
(channel 0 to 3) 
2,5/16,6/20 
400/60/50 
20 
50 
Channel 
Channel 
Measurement range 
(channel 0 to 3) 
deactivated/ 
 +/- 20 mA/ 
 0 ... 20 mA/ 
 4 ... 20 mA/ 
 +/- 10 V/ 
 0 ... 10 V 
+/- 10 V  Channel 
Type of measurement 
(channel 0 to 3) 
deactivated/ 
 U voltage/ 
 I current 
U voltage  Channel 
Unit of measurement 
(channel 4) 
Celsius/Fahrenheit/ 
 Kelvin 
Celsius  Channel 
Measurement range 
 (Pt 100 input; channel 4) 
deactivated/ 
 Pt 100/600 Ω  
600 Ω   Channel 
Type of measurement 
 (Pt 100 input; channel 4) 
deactivated/ 
 Resistance/ 
 Thermal resistance 
Resistance  Channel 
Reference 
See also Chapter 4.3 in the 
Module Data
 Reference Manual. 
Parameters of standard AO 
The table below gives you an overview of standard analog output parameters (see also 
Chapter 4.3 in the 
Module Data
 Reference Manual). 
Table 6-10  Parameters of standard AO 
Parameters  Value range  Default  Range of efficiency 
Output range 
(channel 0 to 1) 
deactivated/ 
 +/- 20 mA/ 
 0 ... 20 mA/ 
 4 ... 20 mA/ 
 +/- 10 V/ 
 0 ... 10 V 
+/- 10 V  Channel 
Type of output 
(channel 0 to 1) 
deactivated/ 
 U voltage/ 
 I current 
U voltage  Channel