NI 9477 (FPGA Interface)
CompactRIO 32-Channel, 5–60 V, Sinking Digital Output Module
FPGA I/O Node
You can use an FPGA I/O Node, configured for writing, with this device.
Terminals in Software
Use the FPGA I/O Node to access the following terminals for this device.
| Terminal | Description |
|---|---|
| DOx | Digital output channel x, where x is the number of the channel. The NI 9477 has DO channels 0 to 31. |
| DO7:0 | Digital port consisting of channels 0 through 7. Channel 7 is returned in the MSB, and channel 0 is returned in the LSB. |
| DO15:8 | Digital port consisting of channels 8 through 15. Channel 15 is returned in the MSB, and channel 8 is returned in the LSB. |
| DO23:16 | Digital port consisting of channels 16 through 23. Channel 23 is returned in the MSB, and channel 16 is returned in the LSB. |
| DO31:24 | Digital port consisting of channels 24 through 31. Channel 31 is returned in the MSB, and channel 24 is returned in the LSB. |
| DO31:0 | Digital port consisting of channels 0 through 31. Channel 31 is returned in the MSB, and channel 0 is returned in the LSB. |
Arbitration
This device supports only the Arbitrate if Multiple Requestors Only and Never Arbitrate options for arbitration. The default arbitration setting is Arbitrate if Multiple Requestors Only.
If you are sure that the design of the FPGA VI will never allow more than one digital function to execute at the same time, even on different channels, you can place a checkmark in the Disable Arbitration checkbox on the C Series Module Properties dialog box to disable arbitration and reduce the amount of FPGA logic used by VIs. If more than one digital function could execute simultaneously in the FPGA VI, leave the box unchecked.
Methods
This device does not support any methods.
Module Properties
Use the FPGA I/O Property Node to access the following properties for this device. This device does not support any I/O properties.
| Property | Description |
|---|---|
| Module ID | Returns the module ID. |
| Serial Number | Returns the unique serial number of the module. |
| Vendor ID | Returns the National Instruments vendor ID, 0x1093. |
Single-Cycle Timed Loop
This device does not support the single-cycle Timed Loop.
Hardware Documentation
Refer to the NI 9477 Operating Instructions and Specifications to learn about module specifications and how to use the module. Refer to the CompactRIO Related Documentation for further information about CompactRIO documentation.