Universal Input selection notes
Do this at add time by selecting the needed input type in the Add dialog, as shown in the following image.
Figure 18. Select Nrio input type for each universal input
For most I/O platforms, any of the following are valid universal input choices:
- VoltageInputPoint
NumericPoint that reads a 0-to-10Vdc input signal and produces either a voltage value or linear scaled output value.
NOTE: Select this also for use with a 4-to-20mA sensor, with a 500 ohm shunt resistor wired across the corresponding UI input terminals.
- ResistiveInputPoint
NumericPoint that reads a resistive signal within a 0-to-100K ohm range and produces either a ohms value or linear scaled output value.
- ThermistorInputPoint
NumericPoint that reads a Thermistor temperature sensor (Type 3, or other) signal and produces a scaled output value.
- CounterInputPoint
NumericPoint that counts the number of contact closures at the input, and also calculates a rate value. One of these two values is configurable as the status numeric output value. Rate type is configurable as either fixed window, sliding window, or trigger type.
- BooleanInputPoint
BooleanPoint that reads the current input as one of two boolean states (equipment status).
Any selection but BooleanInputPoint results in a standard NumericPoint, but with a different type Nrio input proxy extension. The BooleanInputPoint results in a BooleanPoint with an NrioBooleanInput proxy extension.
NOTE: After adding any Nrio proxy point, you can edit name, address, conversion, and facets if desired—but not type. To change type, you must delete the point and then add it again, selecting from the Type drop-down menu. The one exception here is the ResistiveInputPoint and ThermistorInputPoint, which are actually the same—except for the conversion type used in the ProxyExt.