Dryhops
Member
We have a piece of used equipment we are recomissioning that I need to find a password for. The defaults that the OEM sent us are not working.
I only have experience with AB controllers, so this is my first attempt at working with a Siemens controller. After a lot of jumping through hoops, I finally got S7 professional installed and stumbled my way through the archaic connection process to access the project files on the S7-300.
My understanding of the program organization on Siemens controllers is limited, so I'm actively reading the docs, but hopefully someone here can steer me in the right direction.
There is both a username and a password. My first though would be that the credentials are stored in one of the data blocks (DBXX). I only found one string reference. I tried it both for the user name and password, as well as permutations with the credentials that the OEM gave me - no dice.
I've seen some references to SFC blocks, as built in functions of the OS. I cannot view these blocks online. Is authentication a protected function that the OS provides? Or it the password likely stored in the user program somewhere? Could the password instead be located in a byte array, or different data type?
Any other ideas where I should try looking?
I only have experience with AB controllers, so this is my first attempt at working with a Siemens controller. After a lot of jumping through hoops, I finally got S7 professional installed and stumbled my way through the archaic connection process to access the project files on the S7-300.
My understanding of the program organization on Siemens controllers is limited, so I'm actively reading the docs, but hopefully someone here can steer me in the right direction.
There is both a username and a password. My first though would be that the credentials are stored in one of the data blocks (DBXX). I only found one string reference. I tried it both for the user name and password, as well as permutations with the credentials that the OEM gave me - no dice.
I've seen some references to SFC blocks, as built in functions of the OS. I cannot view these blocks online. Is authentication a protected function that the OS provides? Or it the password likely stored in the user program somewhere? Could the password instead be located in a byte array, or different data type?
Any other ideas where I should try looking?