question about 1756-L72S replacing

[mike3475]

Good afternoon, Guys:
we use 1756-L71S and L7SP together, we want to replace 1756-L71S with new L72S, at first we need to assign IP address to L72S, then just simply download the back up program? have to change safety ID with password?
Thanks!

 

[Contr_Conn]

L72S is just a controller, it does not have IP address...

 

[geniusintraining]

Maybe its a L82S? the L71S is the same as a L72S just larger memory

 

[mike3475]

so the backup program has everything including IP address.
we just need to download the backup program to L72S? how about safety ID with password?
Thanks!

 

[Contr_Conn]

It's been a while since I used safety, but I recall that you will need to unlock controller and delete safety signature before changing it to L72S.
Then you can download, generate new signature and lock it.
I am not sure if you need to reset the I/O ownership, I think not - it been a long time since I had these.
As for IP addresses, EN2T module keeps own address that is already assigned to it, it saved to the module.

 

[mike3475]

we have one 1756-EN2T on the same backplane, i got message from our distributor about this question,it said: the safety id will need to be delete before you can change the controller to a 1756-L72S, then a new safety ID will be created for the new controller.
i don't know how to delete a safety ID, now i know that i need to go to safety tab in the controller properties, then unlock the safety. then i can change to L72S.

Thanks everyone!