Which windows login name, Administrator or mts_rt should I use to log into Windows?
Operators should only login to Windows using the Administrator account. This account will give the operator the permissions needed to make changes to the controller network communication settings and MTS software as needed. The default password created by MTS for this account is admin with all lower case letters.
The mts_rt account if present was created to allow the computer to establish communication with the controller. Some controller processors do not allow anonymous login to establish communication so the mts_rt account is created to do that. For Windows login purposes it can be ignored or hidden from the login options. The required password for this account is also mts_rt with all lower case letters.