Read/Write I/O (NI-DAQmx) Controls

NI Vision Builder

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Read/Write I/O (NI-DAQmx) Controls

The following controls are available on all tabs.

Control Name Description
Step Name Name to give the step.
Test Panel Launches the NI-DAQmx Test Panel. The test panel displays the current value of all available NI-DAQmx channels. The test panel also allows you to set digital and analog outputs and chart the values of multiple digital I/O lines and analog input lines.

Digital Input Tab

The following controls are available on the Digital Input tab.

Digital Input Lines

Control Name Description
Read Specifies the digital input lines you want to use in your inspection.
Name Name of the digital input line.

Digital Input Ports

Control Name Description
Read Specifies the digital input ports you want to use in your inspection.
Name Name of the digital input port.

Digital Output Tab

The following controls are available on the Digital Output tab.

Digital Output Lines

Control Name Description
Write Specifies the digital output lines you want to use in your inspection.
Name Name of the digital output line.
Value Signal or value you want to output on the line. Digital output lines can be set to drive Low, High, or Toggle. The digital output lines can also be set to output system signals, boolean measurement results, or the value of a boolean variable.
Polarity Specifies whether the digital output line is driven high when the signal selected is TRUE, or Pass, or when the signal selected is FALSE, or Fail.

Digital Output Ports

Control Name Description
Write Specifies the digital output ports you want to use in your inspection.
Name Name of the digital output port.
Value Signal or value you want to output on the port. Digital output ports can be set to output a constant numeric value, a numeric result from a previous measurement, or the value of a numeric variable.e
Constant Specifies a numeric value to output if Value is set to Constant.

Analog Input Tab

The following controls are available on the Analog Input tab.

Analog Inputs

Control Name Description
Read Specifies the analog inputs you want to use in your inspection.
Name Name of the analog input.

Analog Output Tab

The following controls are available on the Analog Output tab.

Analog Outputs

Control Name Description
Write Specifies the analog outputs you want to use in your inspection.
Name Name of the analog output.
Value Value you want to output on the line. Analog output lines can be set to output a constant numeric value, a numeric result from a previous measurement, or the value of a numeric variable.
Constant Specifies a numeric value to output if Value is set to Constant.