hi
i have S7-1200 plc. i have just changed the protection of cpu without any password to just connect with HMI and then load the program. for the second time when i try to load the hardware or program it ask for password . As there is no password, i try empty password but it do not work and ask for password.
please help me as soon as possible
thanks
i have S7-1200 plc. i have just changed the protection of cpu without any password to just connect with HMI and then load the program. for the second time when i try to load the hardware or program it ask for password . As there is no password, i try empty password but it do not work and ask for password.
please help me as soon as possible
thanks