BECKHOFF EtherCAT Technology Section I - Manual (Page 105)

Error Counters
Slave Controller – Technology I-85
14 Error Counters
The ESCs have numerous error counters which help in detecting and locating errors. All error
counters are saturated at 0xFF (no wrap-around) and they are cleared individually or group-wise by
writing any value to them.
Table 50: Error Counter Overview
Error Counter Register Description
Port Error Counters 0x0300:0x0307 Errors counted at the Auto-Forwarder (per port):
Invalid Frame Counter 0x0300/2/4/6 Invalid frame initially detected (includes RX
Errors)
RX Error Counter 0x0301/3/5/7 Physical layer RX Errors (inside/outside frame):
MII:
RX_ER
EBUS: Manchester violations
Forwarded RX Error Counter 0x0308:0x030B Invalid frame with marking from previous ESC
detected (per port)
ECAT Processing Unit Error
Counter 0x030C Invalid frame passing the EtherCAT Processing
Unit (additional checks by processing unit)
PDI Error Counter 0x030D Physical Errors detected by the PDI. Refer to
PDI description in Section III for details.
Lost Link Counter 0x0310:0x0313 Link lost events (per port), counts only if port is
in Auto or Auto close mode
Watchdog Counter Process
Data 0x0442 Watchdog timeout events
Watchdog Counter PDI 0x0443 Watchdog timeout events
NOTE: Some errors will be counted in multiple registers. E.g., a physical layer RX Error received at port 0 is
counted in registers 0x0300, 0x0301, and 0x030C. A forwarded error received at port 0 is counted in registers
0x0308 and 0x030C.
Some of these registers are not available in specific ESCs. Refer to Section II for details.