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Sam Dexter

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    LabVIEW 2018
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  1. OK, found where to configure the CAN module, silly me, and everything started to work - right click on the module in the project, go the properties and set up baud rate there. Also, NI-9853 works well in either configuration whether installed in cRIO or the expansion chassis. It appears that NI-CAN is not required for NI-9853 operation. I assume it is all handled in NI-RIO.
  2. Well, unfortunately, with COVID and stuff it is really hard to procure extra hardware, so we are stuck with the cRIO-9039 and we have to use NI-9853 with NI-9147 Ethernet expansion chassis to control industrial hydraulic driver that talks only hardcoded J1939. I have tried to use multiple examples (including C:\Program Files (x86)\National Instruments\LabVIEW 2018\examples\CompactRIO\Module Specific\NI 985x) but regardless where the CAN module installed (cRIO or expansion) I am not reading anything (although everything compiles nicely and there are no errors). In the example code, such as cRIO CAN Basic, they use FPGA I/O node to read the data but there is no any kind of the module configuration done prior to that. How is CAN module configured? Through NI-MAX? But the module does not appear in NI-MAX... Does it require NI-CAN? Or I/O node handler is a part of NI-RIO?
  3. Hi guys, I really need some help to kick off J1939 CAN interface development on NI-9853 FPGA. There are some CANopen examples on the internet but nothing for J1939 and I don't even know where to start. What makes life even more difficult is that the CAN module is residing on the Ethernet expansion chassis NI-9147. If anyone could give me something to start with that would be absolutely fantastic. Thank you in advance.
  4. Now, of course, the trick is to do it without ActiveX control using raw HTTP as compactRIO does not have support for ActiveX. Any suggestions? NI-IMAQ cannot access other channels but channel one...
  5. Hi guys, A newbie question - say, I have a compactRIO running Linux Real-Time system and it runs my .rtexe set as startup at the boot. I wonder if there is a way to execute this .rtexe arbitrarily from CLI or by any other means, so you can actually have a few .rtexe on the system and pick and choose which ones to run at will?
  6. The solution is simple - use http:/IPaddress/axis-cgi/mjpg/video.cgi?camera=1 or 2 or 3 or 4...
  7. Hi guys, I am running a system with AXIS F34 camera (actually it is 4 cameras on one main unit) and can acquire a video on one channel (channel 1 only) with both NI-MAQ basic functions and AXIS ActiveX control that comes from AXIS Media Control (AMC) - https://www.axis.com/en-us/support/downloads. The image acquisition seems pretty forward (see the VIs attached) but I have no idea how to control the camera and more importantly how to change the channel. Another question - although you can set up the camera to stream the video without a password it would be nice to know how to actually authenticate the connection from LabVIEW... I wonder if anyone can give an advise on any of the questions. Axis ActiveX.vi Axis IMAQ.vi
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