DDK aiex1 example not working on 6230 for 8 channels in RSE mode

[Gilla]

I'm using a 6230 card trying to read 8 AIs in RSE mode.  Starting with the aiex1.cpp exampe, I've made the changes listed in the other posts for changing the gain to 0 in the aiConfigureChannel call, commenting out the adcReset, and changing the aiPersonalize to SELECT_ACTIVE_HIGH.  I've changed the setting from Differential to RSE in the aiConfigureChannel for my hardware setup.

I'm getting good sample values for channels 0 thru 3, however, sample values for channels 4 thru 7 appear to be values associated with channels 0 thru 3 respectively.  I've varied the input to channel 0 and I see the changes reflected in the samples for channel 4 as well as channel 0.

I'm wondering if there are any settings I need to change since aiex1.cpp was used for Differential and only had a single channel. 

I've had similar results using aiex2.cpp

Thanks,

Mike

[Gilla]

I'm running on Windows XP under RTX

[Tom_W_[DE]]

Hi Mike-

The AI channels are routed differently on the isolated M Series devices because they feature 8 AI instead of the usual 16AI found on non-isolated M Series devices.  You should be able to access AI channels 4-7 (as labeled on the I/O connector) by referring to them as channels 8-11 in software.  So, you would need to create channels for 0,1,2,3,8,9,10,11 in order to scan all 8 channels on the device.

Please give this a try and let me know if you run into any issues.

[Gilla]

That was it, all 8 channels are now working.

Thanks for the help.