NI 9226 (FPGA Interface)

NI CompactRIO Device Drivers Help

Edition Date: December 2017

Part Number: 373197L-01

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CompactRIO 8-Channel, 24-Bit, 1000 Ω RTD Analog Input Module

FPGA I/O Node

You can use an FPGA I/O Node, configured for reading, with this device.

Terminals in Software

Use the FPGA I/O Node to access the following terminals for this device.

Terminal Description
RTDx RTD input channel x, where x is the number of the channel. The NI 9226 has RTD channels 0 to 7.

Arbitration

This device supports only the Arbitrate if Multiple Requestors Only option for arbitration. You cannot configure arbitration settings for this device.

Methods

This device does not support any methods.

I/O Properties

Use the FPGA I/O Property Node to access the following I/O properties for this device.

Property Description
LSB Weight Returns the LSB weight in pΩ/LSB for the channel. Use this value to convert and calibrate NI 9226 data if you set the Calibration Mode to Raw in the C Series Module Properties dialog box.
Offset Returns the calibration offset in µΩ for the channel. Use this value to convert and calibrate NI 9226 data if you set the Calibration Mode to Raw in the C Series Module Properties dialog box.

Module Properties

Use the FPGA I/O Property Node to access the following module properties for this device.

Property Description
Conversion Time Sets the time in milliseconds it takes to acquire conversion data. This property overwrites the value you configure in the C Series Module Properties dialog box.
Module ID Returns the module ID, 0x77C8 (NI 9226 with spring terminal) or 0x77E0 (NI 9226 with DSUB).
Serial Number Returns the unique serial number of the module.
Vendor ID Returns the NI vendor ID, 0x1093.

Single-Cycle Timed Loop

This device does not support the single-cycle Timed Loop.

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