Rockwell Automation Allen-Bradley ControlLogix 1756-EN2F User Manual

50 Rockwell Automation Publication 1756-UM004C-EN-P - June 2021
Appendix A ControlLogix Network Device Status Indicators
Diagnostic Web Pages The number and type of diagnostic fields vary by module catalog number,
series, and revision number.
Link Status
(LINK 1, LINK 2)
Off
One of these conditions exists:
• The module is not powered.
– Verify that there is chassis power.
– Verify that the module is completely inserted into the chassis
and backplane.
– Make sure that the module has been configured.
• No link exists on the port.
• The port is administratively disabled.
• The port is disabled due to rapid ring faults (LNK2).
Flashing green Activity exists on the port.
Green
One of these conditions exists:
• A link exists on the port, but no traffic is being received.
• The ring network is operating normally on active ring supervisor
(LNK2).
• A ring partial network fault was detected on the active ring
supervisor (LNK2).
Link Status
(LAN A, LAN B)
Flashing red
When the corresponding LAN A/B Parallel Redundancy Protocol
(PRP) Warning bit is set.
SD
(1)
The SD indicator shows if the SD card is in use
Off
No activity is occurring with the SD card. You can safely remove
the card, if necessary.
Flashing green The module is reading from or writing to the SD card.
IMPORTANT: Do not remove the SD card while the module is
reading or writing. Let the read/write complete without
interruption. If you interrupt the read/write, data corruption or loss
can occur.
Solid green
Flashing red
One of the following exists:
• The SD card does not have a valid file system.
• The SD card drew excessive current and power has been
removed from the card.
Solid red The module does not recognize the SD card.
Parallel Redundancy
Protocol (PRP)
(1)
Check Firmware Revision for availability of this feature.
Redundant Adapter (RA)
(1)
Major revision 3.001 or higher.
(1) Status indicators only available on the 1756-EN4TR, 1756-EN4TRK, 1756-EN4TRXT.
Table 8 - Dual-port Module Status Indicators
Status Indicator Description Status State
IMPORTANT
The diagnostic web pages have many fields that you can use to monitor the
operating state of your EtherNet/IP module.
To troubleshoot problems, you diagnose as a result of monitoring the
diagnostic web pages of the EtherNet/IP modules, refer to
publication ENET-AT003
, Troubleshoot EtherNet/IP Networks.

Rockwell Automation Allen-Bradley ControlLogix 1756-EN2F Specifications

General

Brand	Rockwell Automation
Model	Allen-Bradley ControlLogix 1756-EN2F
Category	Network Hardware
Language	English