Host application shall be able to control Identity object's attribtue 8 (State) and module status LED

Some special application types have to handle the state attribute of the identity object itself.

e.g. in case of CIP Safety, the status attribute of the Safety Supervisor object (which is handled inside the host application) directly affects the identity object's state attribute.

Such applications types also need to control the module status LED by themself. Therfore, the host application shall have the possibility to control that LED.

Usually, the module status LED and the identity state attribute are controlled by the EtherNet/IP stack. When the host application takes control over these, the following shall apply:

1. The host application is exclusively responsible for the content of the identity state attribute and the behavior of the module status LED
2. Once the host application takes control, there is no way back. The host application shall not be able to switch this feature ON and OFF.
3. The EtherNet/IP stack shall take control not before a reset of the stack has been performed.