BECKHOFF EtherCAT Registers Section II - Manual (Page 52)

AL Event Request (0x0220:0x0223)
II-40 Slave Controller – Register Description
Bit Description ECAT PDI Reset Value
8
9
….
23
SyncManager interrupts (SyncManager
register offset 0x5, bit [0] or [1]):
0:
No SyncManager 0 interrupt
1: SyncManager 0 interrupt pending
0: No SyncManager 1 interrupt
1: SyncManager 1 interrupt pending
…
0:
No SyncManager 15 interrupt
1: SyncManager 15 interrupt pending
r/- r/- 0
31:24 Reserved r/- r/- 0