Siemens SIMATIC ET 200eco PN M12-L Equipment Manual page 50

Behavior of the LEDs RN/NS (RUN/network status), ER/MS (ERROR/module status) and MT/IO
(MAINT/IO status) on EtherNet/IP
The LEDs display the status with the highest priority if there are different LED states due to
overlaid events. (0 = off, 1 = green flashing, 2 = green, 3 = yellow, 4 = red flashing, 5 = red)
The following table shows the meaning of the RN/NS, ER/MS LEDs and MT/IO LEDs for
EtherNet/IP:
Table 5- 3
RN/
NS
Off
Flashes
On
Flashes
On
Not
relevant
Not
relevant
Not
relevant
Not
relevant
Not
relevant
Not
relevant
Not
relevant
Not
relevant
Flashes
Digital inputs/outputs DIQ 16x24VDC/0.5A/2A M12-L 8xM12 (6ES7143-6BH00-0BB0)
Equipment Manual, 02/2022, A5E46571210-AC
Error display of the LEDs
LEDs
ER/ MT/
MS IO
Missing or insufficient supply voltage at the
I/O device.
Off Off
Not Not I/O device on, no data exchange
relevant relevant
Not Not The ET 200eco PN is currently exchanging
relevant relevant data with the scanner.
Not Not EtherNet/IP connection interrupted
relevant relevant
The ET 200eco PN is currently exchanging
data with at least one EtherNet/IP connec-
On On
tion.
I/O devices used by EtherNet/IP are in RUN
mode.
Not No valid MultiFieldbus project is loaded in
relevant the ET 200eco PN.
Off
Not No data exchange. A valid MultiFieldbus
relevant project is loaded in the ET 200eco PN.
Flashes
Not Data exchange via EtherNet/IP
relevant
On
Not Errors in the configuration or parameter
relevant assignment.
Flashes
Not The EtherNet/IP I/O devices are in STOP
relevant mode. No error
Off
Not The EtherNet/IP I/O devices are in RUN
relevant mode.
On
Not Maintenance
relevant
On
Not IO diagnostics or missing IO device of slots
relevant used by EtherNet/IP
Flashes
Test of LEDs during startup: The three LEDs
light up simultaneously for approximately
Flashes Flashes
0.25 s in red. Then for approximately 0.25 s
in green.
Meaning
EtherNet/IP
5.2 Diagnostics
Remedy
• Check the supply
voltage.
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Evaluate the mainte-
nance events.
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49