NI 9481 (Scan Interface)

CompactRIO Scan Interface

NI 9481 (Scan Interface)

CompactRIO 4-Channel, Form A Electromechanical Relay Module


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 write Boolean values to the channels.

Module Channels

The NI 9481 has the following channels.

Channel Description
DOx Digital output channel x, where x is the number of the channel. For the NI 9481, x is 0 to 3.

C Series Module Properties Dialog Box

Use this dialog box to configure the NI 9481. Right-click the NI 9481 in the Project Explorer window and select Properties to display this dialog box. 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.

Hardware Documentation

Refer to the NI 9481 Operating Instructions and Specifications to learn about module specifications and how to use the module. Refer to the CompactRIO Related Documentation (Scan Interface) topic for further information about CompactRIO documentation.