[?]: Take away Ethernet stations from the bus

[Scarch]

Hi all,

I have one installation with a lot of machines, all of them under Profinet with one CPU315.
The machines are individual and must have the chance to use them in another line,
but then i get communications error and the LED of the CPU gores to red,
because some stations have been removed fisically.
How can I remove such stations from the hardware dinamically?
I use the SFC12, but for the Profinet, I don't know the adress I have to put in the parameter LADDR.
What adress should I enter here? For the Profinet stations, there is no diagnostic adress



Thanks a lot