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Omron PLC protection release

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araich

Electrical
May 23, 2013
1
Hi,
I need to upload a program from a punched omron NSJ display. When I try to go online. it pops up a message Memory error or UM read protection. I tried to release the protection "UM protection and task read protection" with the passwords that field guy gave me but it didn't work. after entering the passwords, I get an error message shows "Error releasing read protection- online edit history area is full or set parameters are invalid. Try release password again after backup process is finished or check the password."

Is it because of the wrong passwords or it can be online edit history full error or invalid set parameters. How can I check the history full and set parameters?
Is there any other way to read the program?
 
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