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Hello I have a new project that will undoubtably be my most challenging to date. The valve automation & other parametr control will be simple enough, but I will need to provide the end user the ability to enter production plant Operator User Names and then give those operators the ability to enter a unique password when they tell the system to reset an alarm etc. Local Managment at my customer's faclity will need a seperate ADMIN login to edit the Operator Names and assign the passwords. I've used basic numeric passwords before, that was fairly simple; however they have all been static with no ability to have the end user to edit same from the HMI. I'm thinking that I should be able to accomplish this with using the ASCII string &/or password string function to store these Alphanumeric values from an admin setup screen, and then the users will need to enter their password in the appropriate boxes and have a comparison function block to evaulate if the entered value is correct. I would be using a Vision series PLC. Probaby Vision 700 or Vision 1210. I have not done any development as yet, still waiting on a PO - but this is the main thing on this project that gives me pause and I wanted to see if I was on the right path or not. thank you Jeff