Omron CP1H Write protect

[Guest]

Hi,
I recently had to buy a batch of new electrical components containing
10 PLC Omron Type (CP1H-X40DRA) Apparently stored in store (to be used as spare parts).
And when we check them, I see that they are in perfect condition and that they are already programmed for the applications for which they are intended, which did not interest me since I intended to use them for my own applications.
To my surprise, I see that I cannot download my program because of the write protection (by checking of course that the DIP SWITCH n˚1 is OFF)
The following message appears on CX Programmer on each attempt:
Erasing program memory failed.
The program memory may be protected in read mode with prohibition of erasure.

when I try the option in the PLC pulldown menu: Clear All Memory Areas (checking Reset)
The response is: Failure to erase the entire memory area
The online status of AR99 (Relative to read / write protection) is:
AR99.00=1: UM read protection is set
AR99.01=1: Task read protection is set.
AR99.02=1: Overwriting prohibited (write-protected)
AR99.03=0: Creation of backup program file allowed

I understand of course that we have the right to protect a program against reading or modification, but here to condemn the PLC that we bought and to prohibit the reuse of hardware is something that seems unfair to me!
I also doubt that maybe it was I who did not know how to reset the PLC for my own use (Despite my research on the specialized Forums).
Please enlighten me on the matter or guide me how to remedy this problem.

Thank you for help

[ziconltai]

Your PLC was set write protection password then download to PLC.
If you get a password then release protection then be able to clear program & data. Else, You won't be clear all PLC memory in this case.

[Guest]

ok I'll try
thank you

[Guest]

But your answer supposes that I have the password ... in this case why I will publish this post??

[ARMANDO23106UN]

I have the same problem, but I need unlock and upload the program of PLC. How can I do this. Whit OLLYDBG I can.

Best Regards