Rockwell Automation 1769-SDN Compact I/O DeviceNet Scanner Module User Manual - Manual (Page 123)

Publication 1769-UM009E-EN-P - August 2009 123
Troubleshooting Chapter 8
Network Off No module power, no network power, or communications are not occurring between the module and the
DeviceNet network. (This may be an acceptable condition.)
Verify module has power. Check that the DeviceNet cable is securely connected and the DeviceNet
network is powered. Verify that network power is adequate (11...5V DC).
Flashing
Green Device is operational. There are no connections established with any of the network devices.
If the module is supposed to be controlling DeviceNet slaves, configure the module’s scanlist.
Solid Green Normal operation. Scanlist is configured. Module is not in Idle mode.
Flashing Red One or more of the devices that the scanner module is communicating with is in a timed out state.
Monitor the status display, or the module’s status field to determine which slave device is offline.
Solid Red Critical network failure. Duplicate DeviceNet node address detected.
Reset module. Change module’s node address or change conflicting device’s node address. If failure
continues, replace module.
Seven-
segment
Numeric
Display Node Address
and Status
Display Indicates diagnostic information about the status of the module.
• When the numeric display is showing 0...63, it is indicating the scanner’s DeviceNet node address.
• When it shows 67...69, it indicates backup status.
• When it shows 70...99, it indicates an error code for the displayed node address.
• When it flashes alternating numbers, one is the error code (70...99), and the other is the node number
(0...63) that has generated the error.
Troubleshooting the Status Indicators and Numeric Display
Indicator Color/Status Description