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Perhaps you will wonder how to set a password to protect your program.
You’ve read all of Omron manuals but no mention of this.
Do not worry, I will tell you
At the first location of the program (row 0, column 0), you write a normally open contact with AR10.01 address, followed soon after is instruction FUN (49) with parameters respectively 0, 0, # 1234. With 1234 is the password (for example).
0,0 |——-|AR10.01|————————–[FUN(49) 00 #1234]
Note that you must not insert any contact or instruction between A10.01 and FUN(49) Password only work when turn the power off and then turn it on again or if you want it works immediately, select command from Menu -> Protection -> Set Password.
After you have set your password, in order to do online edit or read (upload) the program from PLC, you have to unlock: from the PLC Menu -> Protection -> Release Password and enter the password that you have set to unlock.
Good luck!
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