9 | Monitoring and diagnostics STOBER
46
02/2020 | ID 442516.07
Green LED Behavior Operating state Description
Off Init No communication between the EtherCAT
master and slave; the configuration starts,
saved values are loaded
Flashing Pre-operational No PDO communication; the EtherCAT
master and slave exchange application-
specific parameters via SDOs
1x flash Safe-operational The EtherCAT slave sends the current actual
values to the EtherCAT master, ignores its set
values and refers to internal default values
On Operational Normal operation: The EtherCAT master and
slave exchange set and actual values
Tab. 4: Meaning of the green LED (run)
Red LED Behavior Error Description
Off No Error No error
Flashing Invalid Configuration Invalid configuration
1x flash Unsolicited State Change The EtherCAT slave changed operating states
by itself
2x flash Application Watchdog
Timeout
The EtherCAT slave did not receive new PDO
data during the configured watchdog
timeout
Tab. 5: Meaning of the red LED (error)
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