Password interface
Password has 3 levels.
Level 1-Full:All PLC functions are available without restriction.
Level 2-Minium ： You have to enter a password before using each function
of PLC.
Level 3-Disallow Upload ： You can't upload the PLC program.Then you have
to enter a password before using each function of PLC.
And if you forget the password ：
1.Power off PLC
2.Keep pressing the UP key and ESC key, then power up to PLC.
3. When “ Are you sure turn to FBD ” appears,you press the OK key.
4.Repeat these steps,you turn the PLC to Ladder diagram.PLC program is
empty.You can download a new program.
The length of the password is 1 to 16 bits.
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