Relay closed when X1A active (i.e. M0 in); to FE; main panel X1A active LED on
| M0 out NO X1A active | | relay | | I:8 O:2 | |----]/[--------------------------------------------------------+----( )-----+-| | 6 | 2 | | | | X1A active | | | | LED | | | | O:3 | | | +----( )-----+ | | 4 |