<![CDATA[REXYGEN Community Forum / Controller redundancy]]> 2016-03-09T15:15:15Z FluxBB http://www.rexygen.com/oldforum/viewtopic.php?id=71 <![CDATA[Re: Controller redundancy]]> Brilliant !

]]> http://www.rexygen.com/oldforum/profile.php?id=21 2016-03-09T15:15:15Z http://www.rexygen.com/oldforum/viewtopic.php?pid=322#p322 <![CDATA[Re: Controller redundancy]]> Yes there is! I just added an example to GitHub repository of REX Control System examples. Here is a direct link to Controller redundancy example.

For this project, you will need the licence for using Advanced function blocks on your Raspberry Pi.

Hope this helps!

]]> http://www.rexygen.com/oldforum/profile.php?id=3 2016-03-08T10:15:11Z http://www.rexygen.com/oldforum/viewtopic.php?pid=317#p317 <![CDATA[Controller redundancy]]> Hi,

Is there any way to implement CPU redundancy using REX with raspberry. For example, There are two raspberry pi's running REX and there is one analog I/O module connected to the first raspberry pi's I2C bus and the second analog I/O module connected to the second raspberry pi's I2C bus .

Both the raspberry pi's are connected over TCP/IP or I2C where one pi is master and the other pi is a slave. The program is running parallely in both the raspberry pi's but only one of them is active and controlling the I/O module. If the first raspberry pi (active) fails for some reason, the second one takes over with a bumpless transfer thus saving the process. People connected with the process industry will find this familiar.

I require this because we have developed some solutions for the Power plant that i am working at but they have not been approved by top management because it lacks controller redundancy. Please help.

]]> http://www.rexygen.com/oldforum/profile.php?id=22 2016-03-07T06:14:36Z http://www.rexygen.com/oldforum/viewtopic.php?pid=308#p308