MCGS HMI Password Management: Reset, Recovery, and Security Best Practices
Accessing or managing an MCGS (Kunlun Tongtai) HMI password depends on whether you are using a default factory setting or trying to recover a lost custom password. 1. Default Passwords
Restricts access to specific screens, operational buttons, or parameter modification inputs.
To protect your entire project from unauthorized viewing or modification, you can set a separate engineering password.
To restrict specific touch buttons or screens on the plant floor: Go to the section within the MCGS workspace. mcgs hmi password
Do not give operators the same access levels as automation engineers. Operators should only view data and toggle safe parameters.
Depending on the service you are trying to access, you may need one of the following sets of default credentials: : 40721 FTP Server Access : admin / admin (typically on Port 21)
[Your Name / Team] Approved by: [Supervisor] Next review due: [Date]
Create the standard MCGS update directory structure (typically an MCGSE folder containing the initialization files). Insert the drive into the powered-down HMI. MCGS HMI Password Management: Reset, Recovery, and Security
3. How to Access Locked MCGS HMI Systems (Password Reset/Bypass)
Restricting specific buttons (like "Start" or "Stop") to authorized personnel.
MCGS software allows for granular security across different operational "classes" or levels:
Managing passwords on an (Kunlun Tongtai) involves several distinct security layers, ranging from factory-level access to project-specific user permissions. Because these devices are frequently used in industrial automation, security is tiered to prevent unauthorized machine operation or project modifications. Common Default & Factory Passwords To protect your entire project from unauthorized viewing
If an MCGS HMI has not been programmed with a custom password, or if you are trying to access factory settings, try these common default passwords (often in Chinese documentation, these are sometimes referred to as the factory password):
If you must retrieve the original project file from the HMI but are blocked by an upload password, engineering teams often use binary analysis tools. This process requires a hex editor (like WinHex) and an exported backup file.
Add individual users, assign them to a security group, and set their initial alphanumeric passwords.
Restricts users from pulling the compiled project file back from the physical HMI hardware to a laptop. Without this, anyone with a USB drive or Ethernet cable can copy your proprietary PLC communication tags and screen layouts.