How do I change Parameters on a PC7 saftronics drive pad on front of drive not working. I could be locked out but I am not finding in the manual how to unlock it. No matter what key I hit it stays in run Mode.

How do I change Parameters on a PC7 saftronics drive pad on front of drive not working. I could be locked out but I am not finding in the manual how to unlock it.

No matter what key I hit it stays in run Mode.