Module I/O Variables

To use I/O from this module in a VI, drag and drop I/O variables from the Project Explorer window to the block diagram of the VI. The I/O variables for the channels return calibrated floating-point data in units as specified on the C Series Module Properties dialog box.

Note   The Scan Interface applies Autozero and cold-junction compensation to NI 9213 data returned in temperature units.

Module Channels

The NI 9213 has the following channels.

Table 142. Module Channels
Channel Description
TCx Analog input channel x, where x is the number of the channel. For the NI 9213, x is 0 to 15.

C Series Module Properties Dialog Box

Use this dialog box to configure the module. To display this dialog box, right-click the module in the Project Explorer window and select Properties. You can configure the following options.

  • Name—Specifies the name of the C Series module, which appears in the Project Explorer window. LabVIEW assigns a default name to the module based on the slot number. You can use this field to give the module a descriptive name.
  • Module Type—Specifies the type of C Series module. You cannot change this value.
  • Location—Specifies a slot in the chassis for the C Series module.
  • Conversion Time—Determines the time it takes to acquire one point of data from one or more channels. Select High Speed or High Resolution. Refer to the NI 9213 hardware documentation for more information about the conversion times.
  • Channels—Specifies the channel(s) for which you want to configure settings.
  • Thermocouple Type—Specifies the type of thermocouple connected to the channel.
  • Measurement Units—Specifies the units you want data to be returned in for the channel. You can select Raw Volts, Degrees Kelvin, Degrees Celsius, Degrees Fahrenheit, or Degrees Rankine.
  • Enable Open Thermocouple Detection—If this box is checked, the NI 9213 returns a zero value and reports an error if it detects an open thermocouple on any channel. This box is checked by default. If you do not check this box, each channel of the NI 9213 independently returns full-scale data and the NI 9213 does not report an error if an open thermocouple is detected.
    Note   Enabling or disabling open thermocouple detection on the NI 9213 has no effect on the accuracy of the measurement because this option on the module is implemented entirely from software.