Allen-Bradley 1769-SDN, Installation Instructions Manual, Page: 46 / 68

46 Rockwell Automation Publication DNET-IN001B-EN-P - January 2012
Appendix A 1756 DeviceNet Status Indicators and Data Structures
Table 3 - Module/Network Status (MOD/NET) Indicator
Status Description
Off One of the following conditions exists:
• The device has not completed the Dup_MAC_ID test.
• The device may not have power.
Either wait for the Dup_MAC_ID test to complete or make sure the device has
power.
Solid green The device is fully operational and is communicating with other devices on the
network:
• For a Group 2 only device, this means the device is allocated to a master.
• For a UCMM capable device, this means the device has one or more
established connections.
No action is necessary.
Flashing green
(1)
The device is fully operational and online. However, it is not communicating with
other devices on the network because of one of the following conditions:
• The device has passed the Dup_MAC_ID test, is online, but has no
established connections to other nodes.
• For a Group 2 only device, this means the device is not allocated to a master.
• For a UCMM capable device, this means that the device has no established
connections.
• The configuration is missing, incomplete, or incorrect.
No action is required until you need the device to communicate with other
devices. In that case, check your system configuration.
Flashing red
(1)
Either or both of the following conditions exist:
• A recoverable fault has occurred.
• Communication with at least one device has timed out.
Check the 4-character display to determine which device has timed out.
Solid red Any of the following conditions exist:
• Another device is using the same address.
In this case, change the device address to a unique value.
• Communication problems on the network (bus off condition).
In this case, make sure all devices are operating at the same communication
rate.
• Device has an unrecoverable fault.
In this case, replace the scanner.
For more corrective actions, see status code 91 on page 50 .
(1) The flash rate of the status indicator is approximately 1 flash per second. The status indicator should be on for
approximately 0.5 seconds and off for approximately 0.5 seconds.
Table 4 - I/O Status Indicator
Status Description
Off The scanner is not powered.
Apply chassis power, and verify the module is completely inserted into the
chassis.
Solid green The scanner is in Run mode, outputs are under control, and inputs are being
consumed.
No action is necessary.
Flashing green
(1)
The scanner is in Idle mode, outputs are not under control, and inputs are being
consumed.
To control output devices, place the scanner in Run mode.
(1) The flash rate of the status indicator is approximately 1 flash per second. The status indicator should be on for
approximately 0.5 seconds and off for approximately 0.5 seconds.