BECKHOFF EtherCAT Registers Section II - Manual (Page 55)

Lost Link Counter (0x0310:0x0313)
Slave Controller – Register Description II-43
3.38 Lost Link Counter (0x0310:0x0313)
Table 56: Register Lost Link Counter Port y (0x0310+y)
ESC20 ET1100 ET1200 IP Core
Bit Description ECAT PDI Reset Value
7:0 Lost Link counter of Port y (counting is
stopped when 0xff is reached). Counts only if
port loop is Auto. r/
w(clr) r/- 0
NOTE: Only lost links at open ports are counted. Lost Link Counters 0x0310-0x0313 are cleared if one of the Lost
Link Counters 0x0310-0x0313 is written. Write value is ignored (write 0).