Changes made for Pathfinder 5226 controllers.

The 5226 has the capability of using a license code to give a customer a certain amount of days of use before locking out the controller if payment is not recieved during that time frame. The controller uses the last 3 characters of the serial number to confirm the code created is for that controller. The problem is that the amount of memory allocated for the serial number is bigger than what is usually used in production. The bug is that the controller was still looking at only the last 3 characters saved in memory for the check which were bogus.

The fix was to get the string only to the null character which is the end of the string/serial number. Then check the actual 3 characters of the serial number to confirm correct controller.

Changes made for the Pathfinder 5226 controllers.

Grippers on a double folding machine can have many different combinations of I/O used for control. One of the combinations is to have one limit input and 2 control outputs. In this case we will turn the output off instead of keeping it on which happens in most cases. The bug was that instead of turning off the opposite output off, the output being used was turned off which can cause the gripper to re-open.

The fix was to turn off the correct output once the move was completed.

Changes made for Pathfinder 5226 controllers.

The HPU system that is put on our retrofitted double folders has both a temperature feedback sensor and an air cooling fan. The controller has 3 parameters to control the cooler based on temperature. There is a threshold parameter which will turn on the fan when temp is above its setting and a maximum parameter which when temp reaches this setting it will throw an error and not let the user run the machine. Then there is a hysteresis parameter. Logic for this parameter is that if the cooler is on and it gets to threshold minus hysteresis turn off the cooler.

The bug for the max temp is that it was also turning off the cooler, but at max minus hysteresis. The hysteresis in this case is just supposed to keep the user from running until under max minus hysteresis, but keep the cooler on to keep cooling. This has been fixed.

Changes made for Pathfinder 5226 controllers.

The HPU system that is put on our retrofitted double folders has a temperature feedback sensor to be able to keep track of the temperature and try to keep it at a certain range to keep the oil in a happy place. We already had maximum temperature logic used in junction with the air cooler, but no minimum temperature logic. To take care of this 3 new parameters were added to look at the temperature when it approaches low levels.

Minimum Oil Temperature: Will not let you start the pump if lower than this value. Will Halt and throw error if somehow drops below this value in run.

Minimum Operating Temperature: Will try to turn on a heater if it exists if trying to turn pump on. Will Halt and throw error if it drops below while running.

Minimum Temp to Run Air Cooler: If the air cooler is on it will be turned off under this temperature.

Changes made for Pathfinder 5226 controllers.

A change was made on double folder machines that didn't have multiple prop. valves for each axis which means they move one at a time. It was to allow the upper retract to move before the clamp could raise. This caused other problems down the line in which the UR could move down before the clamp could close which interferred with the material.

The change was to make a specific axis conflict which knows they share the same prop valve and will only let the UR move before the clamp if the clamp is moving down and the UR wants to move back.