There are 3 types of access levels:

• Operator Access Level (Operator)
  To log on to the OS32C with this access level, a password is not required. This access level cannot make
  changes to OS32C configurations. Only verification and monitoring of existing configuration is available.
• Maintenance Access Level (Maintenance)
  To log on to the OS32C with this access level, a password is required. This access level allows a user to
  modify the non-safety parameters only. This includes the warning zone shapes as well as the non-safety
  critical parameters.
  Password: mainusr
• Supervisor Access Level (Supervisor)
  To log on to the OS32C with this access level, a password is required. This access level allows a user to
  check, change and monitor OS32C configuration information.
  Password: supeusr

For information on how to connect to the OSC32C see the article at this link.