Hey Ron,
you provide not enough information. Are you using the buildbotics-derived Onefinity Controller on the PRO/Original/X-50 Series?
If so, what do you mean with “sign on”? Do you want to access the controller via ssh? If so, the credentials are: User: bbmc Password: onefinity on host http://onefinity.local, or in short, the command:
ssh bbmc@onefinity.local