Real-Time Measurement and Control
CAN-Bus on sbRIO 9637
Hello Everybody,
i'm trying to use the CAN-Bus with a sbRIO 9637.
From what I understand, i have to use the "NI-Embedded CAN for RIO"-Driver (https://knowledge.ni.com/KnowledgeArticleDetails?id=kA00Z000000P8hdSAC&l=de-DE ). The Driver (Version 18.0.0) ist installed successfully.
As a start, to get familiar with the interface, i tried to use the examples of NI: "NI-Embedded CAN for RIO.lvproj"-> "CAN Frame Input Output-single port.vi". The vi excecutes on the sbrio 9637, the CAN-Port can be opened, it seems everything is working as desired (no Error Messages, just a timeout warning of the "CANread.vi" - this was expected, because the other CAN-nodes are "slaves" and don't send a message).
But when i try to write somethong on the bus, nothing happens (i don't recieve anything on the other nodes of the CAN-bus). When i try again and again to send a message, after about 60 attemps, the "CANWrite.vi" throws a Error -35007 "The transmission queue is full. ...." an the vi stops.
To find out what went wrong, i added two "CANWait.vi's" (see screenshot) at the beginning - to check whether the start-procedure is working - and after the write attempt. As result, i always get "Warning 35024" when the timeout-intervall of the CANWait.vi is set to zero. If i set the timeout-intervall to 20seconds (or even more, 50, 100, 200 seconds), the vi throws Error -52007 "The requested operation did not complete in time" and the vi stops.
I've been tried to find a solution for many hours, but without any success - Does anybody have a suggestion what may be the reason for this behaviour?
All help is welcome, many thanks for your support!
Kon
I'm using LabView & LV RT ver. 17.0, the software and driver versions on the sbrio can be seen in the screenshot (of MAX) below.
