While Fatek doesn't have a universal default password, some standard implementations might use 0000 , 1234 , or the machine serial number.
For businesses and engineers, the most cost-effective and secure approach is to rely on the manufacturer or an authorized system integrator. If you must use a third-party service or tool, exercise extreme caution, as malicious PLC password crackers have been weaponized to compromise industrial systems. Ultimately, robust documentation and backup procedures remain the best defense against being locked out of your own equipment.
: Locate the CLR pins (common on FBs series), install a jumper, and power up the PLC.
Whenever possible, disconnect the PLC network from the main office network and the internet. fatek plc password crack fix
If you already know the password, removing it is straightforward. In WinProladder, go to Project → Project Setup → Password . Enter the current password in the Old Password field, then leave the New Password and Confirm Password fields blank and confirm.
If your primary goal is to get the machine running again and you already possess an offline backup of the WinProladder project file, you do not need to extract the password. You can overwrite the locked PLC.
Newer WinProladder versions allow for different levels of protection (e.g., "Read Only" vs. "No Access"). Utilizing the While Fatek doesn't have a universal default password,
A lost Fatek PLC password is a serious operational hurdle, but rarely an insurmountable one. The most effective path forward depends entirely on your situation:
Advanced users can password-protect specific subroutines. You may be able to see the main program, but a critical auto-sequence block remains locked.
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If the "Read Protect" bit is set, the PLC will not send the program over the serial port at all. However, the password hash is stored in the external EEPROM (usually an AT24C02 or AT24C08 ).
: Some reports indicate that if the PLC's password screen shows a specific status (like "5%"), it may be technically impossible to unlock without a full reset.
There are specialized software tools designed to unlock Fatek PLC passwords. Many of these are listed as "Fatek PLC Password Unlock software" on platforms like Facebook and industrial forums [2].
This requires advanced electronics skills. The memory chip (EEPROM) is desoldered from the PLC’s circuit board, placed into a programmer (like a TL866 or similar), and the .bin file is extracted. A hex editor (e.g., 010 Editor) is then used to search for the password string within the machine code.
