108 • Fieldbus Controller
Fieldbus Controller 750-872/020-000
WAGO-I/O-SYSTEM
750
ETHERNET TCP/IP
3.1.11.1 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
Meaning
Trouble shooting
LINK
green
Link to a physical network exists
OFF
No link to a physical network
Check the fieldbus connection.
MS
red / green
flashing
Self test
red
The system indicates a not remediable error
Restart the fieldbus coupler by turning the power
supply off and on again. If the error still exists,
please contact the I/O Support.
green
flashing
The system is not yet configures
green Normal
operation
OFF
No system supply voltage
Check the supply voltage (24V and 0V)
NS
red / green
flashing
Self test
red
The system indicates a double IP-address in the
network
Use an IP address that is not used yet.
red flashing
At least one connection (MODBUS/TCP or
Ethernet/IP) announced a Timeout, where the
CONTROLLER functions as target.
Restart the fieldbus coupler by turning the power
supply off and on again and develop a new
connection.
green
flashing
No connection (MODBUS/TCP or Ethernet/IP).
green
At least one connection (MODBUS/TCP or
Ethernet/IP) is developed (also connection to
the Message rout applies)
OFF
No IP address is assigned to the system.
Assign to the system an IP address by BootP,
DHCP or the Ethernet Settings tool.
TxD/RxD
green
Data exchange via ETHERNET taking place
OFF
No data exchange via ETHERNET