Hi, I have two old machines with old Koyo plc with the same program, one plc lost the program, I try to retrive the program of the plc with the program to transfer to other plc, but the plc have password 4digit and the factory is out of business.
Knows anybody method how unpass this plc?
Thanks
unpass DirectLogic plc
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stiletnt
- Posts: 2
- Joined: Thu Mar 16, 2023 3:43 pm
Re: unpass DirectLogic plc
https://www.dragos.com/blog/the-trojan- ... operators/
the sequence that the Chinese program sends is "4B2105015001FA04040017AB"
1. install RealTerm, run as administrator,
2. on the display tab, select HEX[space], on the port tab, select 9600,odd,8,1,none, open the port
3. on the send tab in the first command input window, enter "0x4B 0x21 0x05", in the second "0x01 0x50 0x01 0xFA 0x04 0x04 0x00 0x17 0xAB",
4. click on the send buttons 1 and 2 with a delay of 0.5 seconds.
5. in the terminal window we see our password
the sequence that the Chinese program sends is "4B2105015001FA04040017AB"
1. install RealTerm, run as administrator,
2. on the display tab, select HEX[space], on the port tab, select 9600,odd,8,1,none, open the port
3. on the send tab in the first command input window, enter "0x4B 0x21 0x05", in the second "0x01 0x50 0x01 0xFA 0x04 0x04 0x00 0x17 0xAB",
4. click on the send buttons 1 and 2 with a delay of 0.5 seconds.
5. in the terminal window we see our password