Rockwell Automation SP600 User Manual Version 3.0 - Manual (Page 101)

Programming Basics 10-7
has also been set in the other OIMs. In this case, the last password
value entered becomes the password value for all password-
protected OIMs. (Each OIM cannot have a different password
value.)
For example, if the write-protect password has been set to 5555 for
the local OIM, someone using a remote OIM with no write-protect
password set can still program all of the parameters. If the write-
protect password is then set to 6666 on the remote OIM, you will be
required to enter 6666 on the local OIM to program the parameters.