Changes made for Pathfinder 5226 controllers.

Some SSI encoders have a dedicated error bit that can be used to detect a failure with the controller. The 5226 monitors this bit and will halt the machine. An error will also be thrown that should say which axis encoder is failing. On double folder machines there are 2 5226 controllers being used. One is the master and the other acts as a slave. The slave controller reports back to the master statuses of things on its board like I/O and encoder information. One of these things was supposed to be the error bit of the SSI encoder. This was not being reported back correctly and was also not being accepted by the master correctly.

The fix was to correct both sets of board code to make sure the error bit is handled correctly for each encoder on the slave controller.