Hello Rizal Dwi Listio,

...A yellow LED lights up on the module and a relay contact is closed (the relay contact can be
accessed externally via the "MELD" outputs). This signal remains even in the event of power
failure and can be reset by applying 24 V to the 24 V RESET input.

About addressing and let's say more info about 434-7 input module in manual: S5-115U Programmable Controller (page 283... )

Hope this will help you.

regards