BECKHOFF EtherCAT Registers Section II - Manual (Page 85)

Distributed Clocks (0x0900:0x09FF)
Slave Controller – Register Description II-73
Table 123: Register Latch0 Time Positive Edge (0x09B0:0x09B3 [0x09B0:0x09B7])
ESC20 ET1100 ET1200 IP Core
[63:32]
(w ack)] (w ack) (w ack)
[63:32]
config.
Bit Description ECAT PDI Reset Value
63:0 Register captures System time at the positive
edge of the Latch0 signal. r(ack)/- r/
(w ack)* 0
NOTE: Register bits [63:8] are internally latched (ECAT/PDI independently) when bits [7:0] are read, which
guarantees reading a consistent value. Reading this register from ECAT clears Latch0 Status 0x09AE[0] if
0x0980.4=0. Writing to this register from ECAT is not possible.
* PDI register function acknowledge by Write command is disabled: Reading this register from PDI if 0x0980.4=1
clears Latch0 Status 0x09AE[0]. Writing to this register from PDI is not possible.
PDI register function acknowledge by Write command is enabled: Writing this register from PDI if 0x0980.4=1
clears Latch0 Status 0x09AE[0]. Writing to this register from PDI is possible; write value is ignored (write 0).
Table 124: Register Latch0 Time Negative Edge (0x09B8:0x09BB [0x09B8:0x09BF])
ESC20 ET1100 ET1200 IP Core
[63:32]
(w ack)] (w ack)] (w ack)]
[63:32]
config.
Bit Description ECAT PDI Reset Value
63:0 Register captures System time at the
negative edge of the Latch0 signal. r(ack)/- r/
(w ack)* 0
NOTE: Register bits [63:8] are internally latched (ECAT/PDI independently) when bits [7:0] are read, which
guarantees reading a consistent value. Reading this register from ECAT clears Latch0 Status 0x09AE[1] if
0x0980.4=0. Writing to this register from ECAT is not possible.
* PDI register function acknowledge by Write command is disabled: Reading this register from PDI if 0x0980.4=1
clears Latch0 Status 0x09AE[1]. Writing to this register from PDI is not possible.
PDI register function acknowledge by Write command is enabled: Writing this register from PDI if 0x0980.4=1
clears Latch0 Status 0x09AE[1]. Writing to this register from PDI is possible; write value is ignored (write 0).