Allen-Bradley devicenet modules in logix5000 control systems Manuale Utente
Publication DNET-UM004A-EN-P - March 2004
12-12 Troubleshoot a DeviceNet Network
Network (NET) status indicator
In the SoftLogix chassis monitor, the SoftLogix5800 scanner give you
the same status indicators as the ControlLogix 1756-DNB. To interpret
this indicators, see ControlLogix Scanner 1756-DNB on page 12-3.
the same status indicators as the ControlLogix 1756-DNB. To interpret
this indicators, see ControlLogix Scanner 1756-DNB on page 12-3.
State:
Description:
Recommended Action
off
• Device is not online.
• The device has not completed the Dup_MAC_ID test.
• The device may not be powered.
• The device has not completed the Dup_MAC_ID test.
• The device may not be powered.
If the module (MS) indicator is off, turn on power to the
controller.
controller.
flashing
green
green
Device is OK but is not communicating with other devices on
the network.
the network.
If the device is supposed to communicate with other devices,
add those devices to the scan list of this device.
add those devices to the scan list of this device.
solid green
Device is OK and is communicating with other devices on the
network.
network.
None.
flashing
red
red
Communication with at least 1 device has timed out.
Check the status tags of this device to determine which
device has timed out.
device has timed out.
solid red
Any of the following:
• Another device is using the same address.
• Communication problems on the network (bus off
• 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
• Make sure all devices are at the same baud rate.
• Cycle power to the device.
• For more corrective actions, see status code 91 on