Name Function Color Status Description
Program indi-
cator
Indicates the PDO map-
ping error status.
Green OFF No PDO mapping error
Flashing PDO mapping error
Error indica-
tor
Indicates that an error has
occurred in the Unit.
Red OFF No error
ON Error
Flashing Warning
EtherCAT
L/A IN indica-
tor
Indicates link status in
EtherCA
T physical layer
.
Green OFF Link not established in physical layer
ON Link established in physical layer
Flickering In operation after link was establish-
ed
EtherCAT
L/A OUT in-
dicator
Indicates link status in
EtherCA
T physical layer
.
Green OFF Link not established in physical layer
ON Link established in physical layer
Flickering In operation after link was establish-
ed
EtherCAT
RUN indica-
tor
Indicates the status of
ESM.
Green OFF Init state or power OFF state
Blinking Pre-Operational state
Single flash Safe-Operational state
ON Operational state
EtherCAT er-
ror indicator
Indicates EtherCAT com-
munications error status.
Red OFF No error
Blinking Communications setting error
Single flash Synchronization error or communica-
tions data error
Double flash Application WDT timeout (Sync Man-
ager WDT Error)
Flickering Boot error
ON A fatal error such as WDT timeout
See the following diagram for the status of the indicators.
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
50 ms
200 ms 200 ms
200 ms 200 ms
200 ms 200 ms 200 ms 200 ms
1,000 ms
1,000 ms
500 ms 500 ms
Flickering
Blinking
Single
flashing
Double
flashing
Flashing
3 EtherCAT Communications
3-3
M1 Series EtherCAT Type User’s Manual (I670)
3-1 Display Area and Settings
3
3-1-2 Name of Each Status Indicator