DAC Outputs

NI-Motion VI

DAC Outputs

DAC resources are typically mapped to servo axes and generate the analog control outputs from the PID loops. DAC resources that are not used by axes are available for non-axis specific applications. You can directly control an unmapped DAC as a general-purpose analog output.

The DAC outputs offer 16-bit resolution and the industry-standard ±10 V range. Refer to the specifications of the motion controller documentation for complete DAC output specifications. The following table lists the resource IDs for DACs:

Resource Name   Resource ID
DAC 1 0x31 (49)
DAC 2 0x32 (50)
DAC 3 0x33 (51)
DAC 4 0x34 (52)
DAC 5 0x35 (53)
DAC 6 0x36 (54)
DAC 7 0x37 (55)
DAC 8 0x38 (56)
DAC 9 0x39 (57)
DAC 10 0x3A (58)
DAC 11 0x3B (59)
DAC 12 0x3C (60)
DAC 13 0x3D (61)
DAC 14 0x3E (62)
DAC 15 0x3F (63)

Using DACs Nine Through Fifteen

Complete the following steps to use DACs nine through fifteen:

  1. Open the desired VI in LabVIEW.
  2. View the block diagram.
  3. Right-click the appropriate terminal and select Create»Constant.
  4. Click the drop-down arrow on the constant and select Other.
  5. Type the selected DAC number (in decimal) for DACs nine through fifteen.