User Manual
Section 12
GFK-2958L
May 2021
LED Indicators and Troubleshooting
494
Indicator
LED
Status
Recommended action
Connection/Active
L/A X2
Green: Connection established between
port 2 of the network adapter and
another field device
Green flashing: Data being exchanged
on port 2
Off: No connection
Check the connection to the next
participant and the fieldbus cable
Input Supply
Voltage
3.1
Green: Supply voltage for input current
path > 18Vdc
3.2
Red: Supply voltage for input current
path < 18Vdc
Check the supply voltage
3.4
Red: Internal fuse defective
Replace the network adapter
Output Supply
Voltage
4.1
Green: Supply voltage for output
current path > 18Vdc
4.2
Red: Supply voltage for output current
path < 18Vdc
Check the supply voltage
4.4
Red: Internal fuse defective
Replace the network adapter
EPXEIP001
Indicator
LED
Status
Recommended action
Power LED
PWR
Green: Supply voltage
Off, and the status LED of the module is
green: Defective network adapter
Have the network adapter repaired or
replaced
The internal fuse was triggered due to an
overload
Off, and the module status LED is off:
Improper supply voltage
Check the supply voltage
System Fault
SF
Red: Configuration error, or error in the
network adapter, or error in a module,
or there is a new diagnostic message
Check if the configured station setup
matches the actual setup
Read the diagnostic message with the web
server or an engineering tool and
determine which further actions to take
Red flashing: Station in Force mode
Bus Fault
BF
Red: No connection to the fieldbus
Check the fieldbus cable and the PLC
configuration
Red flashing: Configuration error, no
connection to the control unit, or error
in the parameter set
Check if the configured station setup
matches the actual setup
Check the master configuration and try
again to establish connection
Maintenance
Required
MT
Yellow: Error on the system bus or the
fieldbus
Check that the modules have been
snapped into place properly
Check the fieldbus cabling
Check the fieldbus connection parameters
Connection/Active
L/A X1
Green: Connection established between
port 1 of the network adapter and
another field device
Green flashing: Data being exchanged
on port 1