I have a quick question, please. We had an operator take it upon themselves to change system batteries, with the machine off. It is a 21i and there is no back-up SRAM so all the parameters had to be entered by hand. The machine was performing beautifully, before this. This has been a HUGE project and I'm almost finished. The problem is, the parameters on the back of the machine do not represent the machine well. For example, parameters show using dogs and incremental encoders. The machine is dog-less and uses absolute encoders. The question I have is, are there any parameter settings that could cause a 411 excess error? I put a huge amount of error in the parameters so we could move the machine without getting the error. However, it has affected the machines accuracy. Also, the axis moves a lot slower than it used to. It is a Nakamura Lathe. I suspected the brake wasn't energizing but that wasn't the case. There is no mechanical bind (ball-screw can be turned by hand, with ease). I didn't know if there was a torque setting or something that might be causing the slow speed and the 411 excess error. As I mentioned before, the machine performed beautifully, before this accident. Any help you could be would be greatly appreciated