
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
Errors counted at the Auto-Forwarder (per port):
Invalid frame initially detected (includes RX
Errors)
Physical layer RX Errors (inside/outside frame):
MII: RX_ER
EBUS: Manchester violations
Forwarded RX Error Counter
Invalid frame with marking from previous ESC
detected (per port)
ECAT Processing Unit Error
Counter
Invalid frame passing the EtherCAT Processing
Unit (additional checks by processing unit)
Physical Errors detected by the PDI. Refer to
PDI description in Section III for details.
Link lost events (per port), counts only if port is
in Auto or Auto close mode
Watchdog Counter Process
Data
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.
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