dnet communication lockup

[amazed]

If i unplug my device that I am simply sending a single explicit message(successfully) and then plug back in, I get the following error message "Error 0xbff620ad (DnetErrRsrcLimitRespPending);

You called Write DeviceNet Explicit Message before the response arrived for a previous write.  Only one explicit message can be pending.  Solutions: Finish the write/wait/read sequence before

 writing another explicit message request. "  I cannot recover, even after closing objects and exiting program, except be removing NI dnet card. I'm stumped. Any thoughts? 

[JohnM 64]

Hi,

The error you are describing sounds like something that may have been fixed in a later version of our NI-DNET driver.  What driver version do you have?  I recommend upgrading to our latest version, 1.4.1.  You can download it from the following website:

NI-DNET Version 1.4.1 for Windows 2000/98/ME/NT/XP

Assuming this corrects the error you are having with needing to take out the card and put it back in, you will still get an error once the device is unplugged.  You can catch this error, however, close all of your handles and objects, and then reopen them.  This should allow you to re-establish communication.

Hope this helps!

john m
Applications Engineer

[amazed]

Thanx so much John, I'll give it a shot.

Best Regards

[amazed]

Thankyou very much.  Can't tell you how much time I spent trying to resolve this problem.  Don't understand how I could have gotten the defective driver when I just purchased

the card and software 5 mo ago. Ouch

 Best Regards