6071

[Patekkio]

I have a neverseen problem with a PCI 6071. It seems that in order to acquire data from channels higher than 0-7, I must acquire also low-number channels.
that is: if I need to acquire channel 17 I must also acquire at least one channel between 0 and 7. If I try to acquire only channel 17 I get a 10007 error back. The same software works perfectly with other 64 channels boards, as 64 E3.
(NI-Daq 6.9.3 f3, Win 2000, LV 6.1)
What's going on??

thanks
giovanni

[Ben]

That error is
NI-DAQ LV: A channel, port, or counter is out of range for the device type or device configuration; or the combination of channels is not allowed; or the scan order must be reversed (0 last).

This makes me think that there maybe something going on with your configuration.Check to make sure your low numbered channels are not configured as "differential". The channel pair used in differential mode differes from board to board so make channel 17's low half is set as differential.

Ben

[Patekkio]

Hi Ben
thanks for answer!
All channels are set to s.e.!

Giovanni

[JustinBritten]

Giovanni,

If you are configured for a single-ended measurement mode then you may read from all channels, 0 through 63. However, if you are configured for differential measurement mode your channel count will be halfed. The differential channels are now grouped in eights. Channels 0-7 are read as ACH0-ACH7 for positive ends and ACH8-ACH15 for the negative terminals. Channels 8-15 will be ACH16-ACH23 and ACH24-ACH31.

For more information, please see the Knowledge Base article I have linked below. I found this on our web site by going to http://www.ni.com and searching for "+6071 +channel"

Why Can't I Read More Than 8 Differential Channels on My 64-Channel DAQ Board?
http://digital.ni.com/public.nsf/websearch/F672F0B9D9CE739286256723007EB18C?OpenDocu
ment

Regards,
Justin Britten

Applications Engineer
National Instruments