71
Write:
11. EtherCAT communication alarm code
When the EtherCAT communication is abnormal, the frequency converter panel displays an alarm with error
Err44, and the object word 603Fh displays the error code “8xx”,which can be queried through U0-73 on the
frequency converter panel. After the fault is rectified, use the bit7 of Controlword to reset the fault. The following
table lists the detailed fault causes. (When the frequency converter itself alarms, that is, errors other than Err44,
need to clear the alarm twice through the panel, once clear the alarm itself and once clear the communication
alarm Err44. Through the bit7 of controlword, the reset and clearing fault only needs to be cleared once.)
Alarm
code
Description
Reasons
Solutions
817
Incorrect
ESM
status
request
exception
protection
Accept state transition requirements that cannot be
transitioned from the current state:
Init→SafeOP
Init→ OP
PreOP→ OP
Confirm whether the
master station's state
transition request is
correct
