To prevent intellectual property theft, many engineers set an "Upload Password." If this is set, you cannot "read" or download the program from the HMI to your PC without it.
If you are referring to a different "Delta," here are the quick recovery paths: delta password read download
Many Delta power systems use the credentials admin for the username and password for the password. To prevent intellectual property theft, many engineers set
Kai left Terminal Four with the archive saved in shells and stashed in old objects: a transit token, a photograph tucked into a paperback, a broken synthesizer's hollow space. He didn't know whether the custodians who had taken Maya would ever be brought down. He didn't know if she would ever step back onto familiar ground. But he had the download, and downloads had a stubborn habit of spreading. He didn't know whether the custodians who had
“How to read and download a Delta password”