User manual

13 LEDindicatorsandtroubleshooting| Fieldbus coupler
476 1432790000/08/12.2015Manual u-remote
Coupler/indicator LED Status Recommended action
UR20-FBC-DN
Power LED
PWR Green: Supply voltage
Red: Boot loader failure Have coupler repaired or replaced
Off and the status LED on the module is green: Defective
coupler
Have coupler repaired or replaced
The internal fuse was triggered due to an overload
Off and the status LED on the module is off: Improper supply
voltage
Check the supply voltage
Collective error
SF Red: Conguration error, or error in the coupler, or error in a
module, or there is a new diagnostic message
Redashing: Station in Force mode
Check that the ESI conguration le is up-to-date
Check if the congured 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
Bus failure
BF Red: No connection to the eldbus Check the eldbus cable and the PLC conguration
Redashing: Conguration error, no connection to the
control unit, or error in the parameter set
Check the eldbus parameters and the PLC conguration
Check that the ESI conguration le is up-to-date
Check if the congured station setup matches the actual
setup
Maintenance
MT Yellow: Error on the system bus or eldbus Check that the modules have been snapped into place
properly
Module/Network status
MNS Off: Duplicate MAC ID check active
Green: DeviceNet connection established, device status OK
Greenashing: No DeviceNet connection established,
device status OK
Red: Bus failure Check if MAC-ID is duplicated or device is in state BusOFF or
check bus physics
Redashing: Bus connection timeout Check the eldbus for: cable interruption, plug has been
pulled, 24V supply for the eldbus
Input/Output
IO Green: Data exchange active, outputs are accessed by the
PLC
Greenashing: Station in idle mode (outputs are not ac-
cessed by the PLC)
Check if the CPU of the PLC is in STOPP mode
Red: At least one stack differs from the start conguration
(e.g. one module has been pulled)
Check the conguration of the station
Redashing: Diagnostic message on at least one module Read/conrm diagnostic message
Input supply voltage
3.1 Green: Supply voltage for input current path >18VDC
3.2 Red: Supply voltage for input current path <18VDC Check the supply voltage
3.4 Red: Internal fuse defective Replace the coupler
Output supply voltage
4.1 Green: Supply voltage for output current path >18VDC
4.2 Red: Supply voltage for output current path <18VDC Check the supply voltage
4.4 Red: Internal fuse defective Replace the coupler