For PLCs manufactured after 2020, Fatek patched this vulnerability. Reading R 3839 returns zeros if a password is set. For these units, the "crack" fails completely.
Maintain an offline, encrypted master document containing all PLC passwords, accessible only to authorized engineering managers.
Older generations of Fatek PLCs (specifically older firmware versions of the FBs series) stored or transmitted passwords in ways that made them vulnerable to reverse engineering. Early versions of the communication protocol transmitted security data in plain text or used weak obfuscation over serial (RS232/RS485) connections. Malicious actors and third-party software developers capitalized on these flaws to create "crack tools" that sniff communication packets or brute-force the PLC registers to bypass the password prompt. Modern Enhancements
Older Fatek PLC models had known vulnerabilities where passwords could be intercepted via serial monitoring or extracted from memory buffers. Fatek has released firmware updates to address these "cracks." Firmware Updates:
If you possess the original backup of the project file ( .pwp extension) on an engineering laptop, you do not need to crack the password. You can clear the PLC memory and overwrite it. Open software.
If you legally own the machinery but the original integrator is unreachable, Fatek Automation or your local authorized distributor can assist under strict verification protocols. You must provide proof of ownership of the hardware.
The HMI screen glowed an angry red:
If you are the legitimate owner of the equipment and simply lost the password, here are the proper methods to regain access.
If the password is truly lost, several methods exist, ranging from software tools to third-party services. A. Dedicated PLC Password Cracking Services
I can provide specific WinProladder menu navigation paths or firewall rules based on your setup. Share public link
Keep uncompiled, password-free copies of the .pwp project files stored on a secure, encrypted company server.
This approach is time-consuming and requires detailed knowledge of the machine’s operation, but it is always possible. As one industrial automation professional notes: “If a PLC is password protected then re-programming is the only option left, if you don’t know the password. Usually, PLC passwords aren’t easily cracked, and reprogramming is often the only option” .
Searching for “Fatek PLC password crack” will inevitably lead you to downloadable tools and software claiming to break PLC passwords instantly.
If no hash is found, some tools will cycle through 0000 to ZZZZ . At 3 attempts per power cycle, this will take approximately 2.3 years. Avoid this.
Recovering or cracking a password on a Fatek PLC is technically challenging and carries significant risks. While several methods exist—ranging from guessing default credentials to advanced hardware EEPROM reading—each has its own trade-offs in terms of success rate, cost, and safety.
Required to transfer a new program to the PLC.
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later.
Searching for "crack fixes" often leads to malicious software. Security researchers (e.g., Dragos ) have found that many PLC password-cracking tools are actually . Support | FATEK AUTOMATION CORP.