BECKHOFF EtherCAT Registers Section II - Manual (Page 69)

SyncManager (0x0800:0x087F)
Slave Controller – Register Description II-57
Table 91: Register Control Register SyncManager y (0x0804+y*8)
ESC20 ET1100 ET1200 IP Core
[7] [7] [7] [7]
Bit Description ECAT PDI Reset Value
1:0 Operation Mode:
00: Buffered (3 buffer mode)
01: Reserved
10: Mailbox (Single buffer mode)
11: Reserved r/(w) r/- 00
3:2 Direction:
00: Read: ECAT read access, PDI write
access.
01: Write: ECAT write access, PDI read
access.
10: Reserved
11: Reserved
r/(w) r/- 00
4 Interrupt in ECAT Event Request Register:
0:
Disabled
1: Enabled
r/(w) r/- 0
5 Interrupt in PDI Event Request Register:
0:
Disabled
1: Enabled
r/(w) r/- 0
6 Watchdog Trigger Enable:
0:
Disabled
1: Enabled
r/(w) r/- 0
7 Reserved, write 0 r/- r/- 0
NOTE r/(w): Register can only be written if SyncManager is disabled (+0x6.0 = 0).