View backplane diagnostic information
This tab provides general status and diagnostic-related information about the ControlLogix backplane. The tab for all three modules contains information about the ControlLogix backplane. To view backplane information, select the
Backplane
tab. From this tab, you can view:General information
Field | Description |
ControlBus Status | Current state of the interface between the module and the ControlBus. |
Slot Address | Slot number of this module in the ControlLogix chassis. (Slot 0 is the left-most slot.) |
Rack information
Field | Description |
Size | Number of slots in the ControlLogix chassis. |
Serial Number | Serial number of the ControlLogix chassis. |
Revision | Revision level of the ControlLogix chassis. |
Backplane information
Field | Description |
Received Multicast CRC | Number of multicast ControlBus transfers this module sent that a recipient declared as having a CRC error. This is typically caused by electrical noise getting coupled into the ControlBus. |
Received Bad CRC | Number of point-to-point ControlBus transfers this module sent that a recipient declared as having a CRC error. This is typically caused by electrical noise getting coupled into the ControlBus. |
Received Bus Timeouts | Number of ControlBus transfers that this module initiated that exceeded the maximum transfer time. This is typically caused by a hardware failure. |
Transmit Bad CRC | Number of point-to-point ControlBus transfers this module declared as having a CRC error. This is typically caused by electrical noise getting coupled into the ControlBus. |
Transmit Bus Timeout | Number of ControlBus transfers that this module received that exceeded the maximum transfer time. This is typically caused by a hardware failure. |
Multicast CRC Threshold | Number of consecutive errors that will be reported as a module fault. |
Transmit Retry Limit | Number of times a transmission will be attempted before declaring the transmission has failed. |
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