Allen-Bradley 1769-SDN, Installation Instructions Manual, Page: 59 / 68

Rockwell Automation Publication DNET-IN001B-EN-P - January 2012 59
1769 DeviceNet Modules Status Indicators and Data Structures Appendix B
1769-SDN Scanner Status
Indicators The 1769-SDN scanner has two status indicators that provide information about
the scanner and its network connection.
Status Indicator Description
Module Status Indicator A bicolor (green/red) status indicator that provides device status.
Network Status Indicator A bicolor (green/red) status indicator that provides
communication status.
Table 12 - Module Status Indicator
Indicator Condition Description
Off The scanner is not powered.
Apply power.
Flashing green No Bus Master (MicroLogix or CompactLogix controller) is
present.
Complete these steps to address this issue.
1. Verify that module connectors are properly seated.
2. If the connectors are properly seated, cycle power to the
controller.
3. If cycling power does not correct the issue, replace the
controller.
4. If replacing the controller does not correct the issue, replace
the scanner.
Solid green The scanner is fully operational and is communicating with other
devices on the network.
Flashing red The scanner has experienced a recoverable fault because one of
these conditions exists:
• Memory has been erased.
• Memory is being programmed.
Complete the update or start a new update.
Solid red The scanner has experienced an unrecoverable fault. Complete
these steps to address this issue.
1. Verify that the module connectors are properly seated.
2. If the connectors are properly seated, verify that the bus
terminator/end cap is installed.
3. If the bus terminator/end cap is installed, cycle power.
4. If, after cycling power, the status indicator is still solid red,
replace the scanner.
Module Status Indicator
Network Status Indicator