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XC22 Canbus Baudrate Change

chuck streb 22 hours ago in IQANdesign updated by Thomas Moberg (System support) 6 hours ago 1

We are having issues with the canbus as we have unusual routing.

We are connecting MC43 to (2) XC22 with correct terminations. The 250kb default is working for most of our products out in the field but some are marginal. The only real way for us to fix the problem given hardware LOCK is to lower the speed to 125kb. BUT there is no option for speed changing.  Would it be possible ???

You can not change the speed for the normal expansion bus but you can change the polling cycle time on the bus.

This is how often the master will be sending and receiving CAN messages from the expansion modules on that bus.

Lets sat you have a cycle time of 10 ms in the application.

If you set the polling time to 20 ms you will only update the in/out for those expansion modules every other cycle and decrease the bus load.

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