3.1.4.1 Analog In
Analog sensors usually output a voltage or a resistance that can be interpreted by the firmware. When the
output is a voltage, the signal can be directly read by the analog input, but if it’s a resistance (e.g. resistance
temperature detectors), a voltage divider must be used to generate a voltage equivalent to the resistance.
Important
If your servo drive does not incorporate a voltage divider itself, you must attach one separately.
SOMANET servo drives come with a default configuration for the analog inputs that can be alternated on
request.
For details please refer to SOMANET Node’s Analog In configuration or to SOMANET Circulo’s Analog In
configuration .
3.1.4.1.1 Using single-ended sensors on differential inputs
A single-ended encoder can be attached to the differential ports, if the voltage range fits only to the
differential inputs. The signal must be connected to the + pin of the Analog In and the Ground to the - pin.
Note
In this case, half of the analog input range will be lost.
3.1.4.1.2 Nonlinear conversion
Analog Input Scaling: Nonlinear conversion of an analog voltage using a 5th order polynomial function.
3.1.4.1.3 Parameters
0x2401 Analog input 1 Parameter holding the value of analog input 1
0x2402 Analog input 2 Parameter holding the value of analog input 2
0x2403 Analog input 3 Parameter holding the value of analog input 3
0x2404 Analog input 4 Parameter holding the value of analog input 4
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