Rockwell Automation 1761-NET-DNI DeviceNet Interface (DNI) - Manual (Page 64)

Publication 1761-UM005B-EN-P - October 2006
64 Setup, Programming, and Troubleshooting
Network Status LED (NET LED)
The network status LED provides information specific to the
DeviceNet network.
RS-232 Port LED Indicator
The DNI has a green LED next to the RS-232 connector to provide
communications activity status. The LED is lit whenever data is being
transmitted or received. When communications are occurring, this
LED will appear to be flashing.
Fault Conditions The following table defines causes of faults in the DNI.
Network Status LED
LED Condition DNI State Problem/Indication
Off Not Powered/Not
On-Line DNI is not on-line.
• DNI has not completed the
Dup_MAC_ID test yet.
• DNI may not be powered.
Flashing Green
(1)
(1) Normal condition.
On-Line, Not
Connected DNI has passed the Dup_MAC_ID test, is
on-line, but has not established connections
to other nodes.
Green
(1) On-Line, Connected The DNI has one or more valid established
connections. This can be either I/O or
Messaging
Flashing Red Connection
Time-Out I/O connection(s) are in the timed-out state.
Red Critical Link Failure Failed communication device. The DNI has
detected an error that has rendered it
incapable of communicating on the network
(Bus-Off error). If the error is Duplicate MAC
ID, the DNI only communicates via the Group
4 off-line connection set.
Flashing Red-Green Communication
Faulted A specific communication fault recovery
stage or self-test.
Fault Conditions
MOD LED NET LED Fault Condition DeviceNet Standard Fault Available Recovery Options
Solid Red Not Applicable Self-Test Failure Module - Major Unrecoverable Fault Power Cycle
Flash Red Not Applicable Invalid Configuration
Parameter Module - Minor Recoverable Fault Modify Invalid Parameter
Flash Red Not Applicable EEPROM Invalid Module - Major Recoverable Fault Re-commission the DNI.
Not Applicable Solid Red Duplicate Node Detected Communication Fault Power Cycle, Group 4 Fault Recovery
Not Applicable Solid Red Bus-Off Error Communication Fault Power Cycle, set bus-off attribute of
DeviceNet object to 1.