S7-200 decryption
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Our unit uses S7200, and due to changes in technical conditions, it is necessary to modify the control output timing. But the PLC program has a password, and the factory can no longer find it. Dear experts, could you provide an effective and practical decryption program?
Search online; I think I’ve seen something like this before.
I certainly tried to look as well, but they were all for advertising. No suitable one was found.
I do have a solution for the S7300, but I’m not sure if it can be applied to the S7200; I haven’t tried it yet.
Our unit also has S7-200 units that have been encrypted; the manufacturer can find a way to do that, but it’s a password that was intentionally added there to ensure technical confidentiality. . . There’s no solution. Everyone who claims they can fix it online is lying; the only option is to spend money and hire an expert. . . .
If it’s domestic, it’s hard to decode; imported ones can be decoded! ! !
I really hope we can crack the password. Gaga
The steps to reset the password are as follows: 1. S7-200 STOP 2. RESET S7-200——FACTORY——SET DEFAULTS 3. PLC — CLEAR 4. REPROGRAM THE MEMORY CARTRIDGE TO REMOVE THE LOST PASSWORD. I used this method once in 2003. Most importantly: keep a backup of the original program, so that it can be restored if something goes wrong.
8th floor: What you’re doing is deleting the PLC program, not decrypting it!