From 12:00 AM CDT Sunday, October 17 - 11:30 AM CDT Sunday, October 17, ni.com will be undergoing system upgrades that may result in temporary service interruption.

We appreciate your patience as we improve our online experience.

Table Of Contents

FieldDAQ Physical Channels

Last Modified: October 17, 2018

In physical channel names, <product name>-<serial#> is the default device name. For example, an FD-11613 with serial number 1C6A39C shows up in MAX as FD11613-1C6A39C. MAX also appends the bank number. For example, FD11613-1C6A39C-Bank1. You can change these names in MAX.

FieldDAQ devices include the FD-11601, FD-11603, FD-11613, FD-11614, FD-11634, and FD-11637.

Analog Input

The following table lists the number and naming of analog input physical channels for FieldDAQ devices.

Device Number of Channels Naming
FD-11601 8 FD-11601-xxxxxxx-Bank1/ai0 to FD-11601-xxxxxxx-Bank1/ai3

FD-11601-xxxxxxx-Bank2/ai0 to FD-11601-xxxxxxx-Bank2/ai3

FD-11603 8 FD-11603-xxxxxxx-Bank1/ai0 to FD-11603-xxxxxxx-Bank1/ai3

FD-11603-xxxxxxx-Bank2/ai0 to FD-11603-xxxxxxx-Bank2/ai3

FD-11613 8 FD-11613-xxxxxxx-Bank1/ai0 to FD-11613-xxxxxxx-Bank1/ai7
FD-11614 16 FD-11614-xxxxxxx-Bank1/ai0 to FD-11614-xxxxxxx-Bank1/ai7

FD-11614-xxxxxxx-Bank2/ai0 to FD-11614-xxxxxxx-Bank2/ai7

FD-11634 8 FD-11634-xxxxxxx-Bank1/ai0 to FD-11634-xxxxxxx-Bank1/ai3

FD-11634-xxxxxxx-Bank2/ai0 to FD-11634-xxxxxxx-Bank2/ai3

FD-11637 8 FD-11637-xxxxxxx-Bank1/ai0 to FD-11637-xxxxxxx-Bank1/ai3

FD-11637-xxxxxxx-Bank2/ai0 to FD-11637-xxxxxxx-Bank2/ai3

Strain and Wheatstone Bridge Measurements FD-11637

The FD-11637 supports only the AI Strain Gage, AI Rosette Strain Gage, AI Force Bridge, AI Pressure Bridge, AI Torque Bridge, AI Bridge (V/V), and AI Custom Voltage With Excitation channel types.

When using the FD-11637 with an AI Custom Voltage With Excitation channel, you must set the AI.Excit.UseForScaling attribute/property to true. This attribute/property causes the channel to return ratiometric data: Vin/Vex.

The FD-11637 returns a voltage ratio rather than a voltage. Therefore, use the AI.Bridge.InitialRatio attribute/property to specify the initial voltage ratio, or set the AI.Bridge.InitialVoltage attribute/property to the ratio Vin/Vex returned by the device, multiplied by Vex.

When the FD-11637 is in quarter bridge mode, you need to use the AI.Bridge.NomResistance attribute/property to control whether the channel uses the 120 Ω range or the 350 Ω range.

The FD-11637 has internal half-bridge completion, and quarter-bridge completion for 120 Ω and 350 Ω strain gauges.


Recently Viewed Topics