DeviceNet write to card by multiple processes

[A_Ryan]

Olaje,
Can you please point me to the specific section of the manual that you are referencing so that I can view the same information?

[Olaje]

Hello Ryan,
The only reference to parallel process management in regards
to sharing the DNet card/drivers resources that I could find, and the one I am
referring to originally, is the NI-Dnet Users Manual, page 3-10 (April 06
version), "Multiple Application on The Same Interface",

Thanks

[DirkW]

Hi,
The NI-Dnet "openDnet I/0" function creates a single ID object for every single device you are calling it for. That means for you got multiple object handles for your devices and you can use them with a single "wait for state" function for every handle in parallel. You cannot use the wait for the same handle multiple times in parallel.
You could run the NI-Spy in parallel to log all your API calls, to see whether a timeout happened to on of your objects. The Spy installs with your NI-DNETdriver.
DirkW

[A_Ryan]

Olaje,
Other D-Net information that could be helpful: <a href="http://zone.ni.com/devzone/cda/tut/p/id/4097" target="_blank">DeviceNet Poll Rate&nbsp;</a>, and <a href="http://digital.ni.com/public.nsf/allkb/04114873FFF97BB3482571990008758A?OpenDocument" target="_blank">Get Poll Connection Input &amp; Output Size and Set the Connection Attributes</a>.&nbsp; If you would like more information please let me know.&nbsp; Thanks and have a great day Message Edited by A_Ryan on 01-28-2008 01:01 PM