← All Default Passwords
ABB

AC500 Default Password

Industrial Critical Risk HTTP :80
🔑 Default Credentials
Username adminCopied!
Password adminCopied!
Protocol HTTP
Port 80
⚠️ Security Warning: Default credentials are the #1 cause of device compromise. Change these immediately after deployment. Attackers actively scan for devices using factory defaults.

📖 Device Notes

ABB PLC default web server credentials.

🔧 How to Change Default Password

  1. Connect to the device via HTTP on port 80
  2. Login with the default credentials shown above
  3. Navigate to Administration, Security, or User Management settings
  4. Change both the username and password to strong, unique values
  5. Use a password manager to store the new credentials
  6. Disable remote management if not needed
  7. Enable firmware auto-update if available