Can anybody explain protections in a simple way?

[Penko Mitev 0]

Hello guys! As my problems are in a logical order, here comes the password issue. I took a look at the two types of protection - application protection and password protection. Yesterday customer's people came and took the machine. We are going to run the machine in, probably on Monday, at the town where the customer's factory is located. The PLC is a modular Twido. However, I did not manage to fully finish the operations. I only protected the PLC with a password, but there is another option(application protection) based on that I conclude it's insufficient. My goal is to fully protect the application, even no reads. Can anybody explain in short what do these two give me? Having in mind, I am willing to disable even reading, is it achievable with these two options? Also, having these two, if I eventually send the PLC program to the customer, will they be able to access it without troubles? Penko Edited 7 Feb 2010 by Penko Mitev