GE MiCOM P40 Agile - Page 551

into account the test modes and local switching, so the scheme is signalled out of service at all terminals if one
terminal is locally disabled.
The logic presented above is intended only as an example. You may need to customise it for your application
requirements.
P543i/P545i Chapter 20 - Fibre Teleprotection
P54x1i-TM-EN-1 515