Fieldbus Status; Node Status - WAGO 750-341 Manual

3.1.7.2

Fieldbus status

The health of the ETHERNET Fieldbus is signalled through the top LED
group ('LINK', 'MS', 'NS' and 'TxD/RxD'). The two-colored LEDs 'MS'
(module status) and 'NS' (network status) are solely used by the Ethernet/IP
protocol. These two LEDs conform to the Ethernet/IP specifications.
LED
LINK
green
OFF
MS
red / green
flashing
red
red flashing
green
flashing
green
OFF
NS
red / green
flashing
red
red flashing
green
flashing
green
OFF
TxD/RxD
green
OFF
3.1.7.3

Node status

The 'I/O'-LED displays the communication status of the internal bus.
Additionally, this LED is used to display fault codes (blink codes) in the event
of a system error.
LED
I/O
Green
Red
Red
WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP
Meaning
Link to a physical network exists
No link to a physical network
Self test
The system indicates a not remediable error
The system indicates a remediable error
The system is not yet configures
Normal operation
No system supply voltage
Self test
The system indicates a double IP-address in the
network
At least one connection announced a Timeout,
where the coupler functions as target.
No connection
At least one connection is developed (also
connection to the Message rout applies)
Dem System ist keine IP-Adresse zugeordnet
oder es liegt keine Betriebsspannung an
Data exchange via ETHERNET taking place
No data exchange via ETHERNET
Meaning
Fieldbus coupler operating perfectly
a) During startup of fieldbus coupler:
Internal bus being initialized,
Startup displayed by LED flashing fast for approx.
1-2 seconds
b) After startup of fieldbus coupler:
Errors, which occur, are indicated by three conse-
cutive flashing sequences. There is a short pause
between each sequential flash.
Fieldbus Coupler 750-341
LED Display
Trouble shooting
Check the fieldbus connection.
Check the supply voltage (24V and 0V)
Trouble shooting
Evaluate the fault message (fault code and
fault argument).
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