Selecting bridge type for 9237 module on cRIO

[brucec12]

How do you select 1/2 or Full bridge completion and Shunt settings for 9237 Bridge module on cRIO? The getting started example only seems to set the data rate?. The FPGA Property Node only has Data Rate, Excitation, and ID params available as choices? Am using 8.2.1. Other discussion threads talk about configuring with MAX but for cRIO/8.2.1 MAX doesn't show modules, just the remote system top level.

Thanks,

Bruce

[Brian_R]

I think you are accessing the property node for the entire module.  If you set the property node to be one of the inputs of the NI-9237, half-bridge completion is an option in the property node. 

You are right - in MAX, you can't configure the NI modules in the cRIO like you can in the compact DAQ chassis.  You can only view the NI modules in the project, and you can set properties using property nodes. 

Message Edited by Brian R on 09-14-2007 10:40 AM

[JMota]

Hi Bruce,

The Half vs Full Bridge as well as the Excitation Voltage settings live in the properties page for the NI 9237 module in the LV Project (right-click module item>>Properties). See attached image.

JMota

[Frederico Barros]

And how do I set for quarter bridge?

[Brian_R]

This module is designed to take half- and full-bridge measurements.  Please see the NI-9237 Hardware Manual for more information regarding the specs of this module. 

[Frederico Barros]

Dear Brian R,

I know that 9237 are used for half and full bridge but I have 9944 acessory to use as quarter bridge. I can set 9237 with 9944 for cDAQ on MAX but i cant set it on cRIO.

http://forums.ni.com/ni/board/message?board.id=250&message.id=25781&query.id=367916#M25781 for cDAQ 

[JamesR]

By using the quarter-bridge completion accessory, you are creating a half-bridge connection from the perspective of the 9237.  Configuring it to work with half-bridge completion and making sure external connections are wired correctly should do the trick.