User manual

Publication DNET-UM004A-EN-P - March 2004
Troubleshoot a DeviceNet Network 12-3
ControlLogix Scanner 1756-DNB
4-Character display:
Display: Description:
A#xx Address of this device, where:
xx is the address.
IDLE Device is in idle mode.
AUTO The AutoScan option is on and the device is in idle mode.
RUN Device is in run mode.
No Network Power The DeviceNet cable is not supplying power to the
communication port.
Network Disabled Controller has set the device to the disabled mode.
No Rx Either or both of the following:
• The device does not have a scan list.
• The device has not received communication from any
other device
No Tx Device has failed to transmit a message.
N#xx Another device has a problem, where:
xx is the address of the device.
The status code for the device follows the address.
E#xx Status code (page 12-16) for a device with a problem, where:
xx is the status code for the device.
The address of the device comes before the status code.
DeviceNet TM
MOD/NET I/O OK