ADC Channels
You can use ADC channels as analog feedback for axes or as general-purpose analog inputs to measure sensors or potentiometers.
All ADC channels are multiplexed and automatically scanned to keep the converted ADC register values current. The following table lists the resource IDs for ADCs:
| Resource Name | Resource ID |
| ADC 1 | 0x51 (81) |
| ADC 2 | 0x52 (82) |
| ADC 3 | 0x53 (83) |
| ADC 4 | 0x54 (84) |
| ADC 5 | 0x55 (85) |
| ADC 6 | 0x56 (86) |
| ADC 7 | 0x57 (87) |
| ADC 8 | 0x58 (88) |
| ADC 9 | 0x59 (89) |
| ADC 10 | 0x5A (90) |
| ADC 11 | 0x5B (91) |
| ADC 12 | 0x5C (92) |
| ADC 13 | 0x5D (93) |
| ADC 14 | 0x5E (94) |
| ADC 15 | 0x5F (95) |
ADC channels do not typically provide the same level of feedback performance as encoders, but have the advantage of providing absolute rather than incremental feedback.
On 7340/7330 controllers, ADCs 5 through 8 are hard-wired to specific sources, and cannot be used as general-purpose resources or as feedback devices. Refer to the Read ADCs VI for more information.
Using ADCs Nine Through Fifteen
Complete the following steps to use ADCs nine through fifteen:
- Open the desired VI in LabVIEW.
- View the block diagram.
- Right-click the appropriate terminal and select Create»Constant.
- Click the drop-down arrow on the constant and select Other.
- Type the selected ADC number (in decimal) for ADCs nine through fifteen.