User manual

Publication DNET-UM004A-EN-P - March 2004
Troubleshoot a DeviceNet Network 12-5
ControlNet to DeviceNet Linking Device 1788-CN2DN
DeviceNet Network Status indicator
DeviceNet I/O Status indicator
State: Description: Recommended Action
off • Device is not online.
• No network power.
• The device may not be powered.
1. If the module (MS) indicator is off, turn on power to
the device.
2. Make sure the DeviceNet cable is supplying power to
the communication port.
flashing
green
Device is OK but is not communicating with other devices on
the network.
If the device is supposed to communicate with other devices,
add those devices to the scan list of this device.
solid green Device is OK and is communicating with other devices on the
network.
None.
flashing
red
Communication with at least 1 device has timed out. Check the status tags of this device to determine which
device has timed out.
solid red Any of the following:
• Another device is using the same address.
• Communication problems on the network (bus off
condition).
• Device has an unrecoverable fault and may need to
be replaced.
• Make sure the device has a unique address.
• Make sure all devices are at the same baud rate.
• Cycle power to the device.
• For more corrective actions, see status code 91 on
page 12-17
State Description Recommended Action
flashing
green
Device is in idle mode To control outputs, place the device in run mode.
solid green Device is in run mode None.
off • Device is not online.
• No network power.
• The device may not be powered.
1. If the module (MS) indicator is off, turn on power to
the device.
2. Make sure the DeviceNet cable is supplying power to
the communication port.