User Manual

Rockwell Automation Publication 1752-UM001E-EN-P - June 2014 183
Monitor Status and Handle Faults Chapter 12
Error History Messages and
Corrective Actions
Use the error history messages to identify and correct errors.
Table 19 - Controller System Failure Error Messages
Message Description Corrective Action
System Failure A system failure occurred. Replace the controller if a system failure occurs again after cycling power.
Invalid Configuration The configuration is invalid. The current configuration differs from the original configuration. Reconfigure after checking.
Table 20 - Programming-related Error Messages
Message Description Corrective Action
Function Block Status Error An incompatible signal input was set as an
input condition in the function block’s Set
Parameters.
Check the inputs entered in the function block or program logic.
Table 21 - DeviceNet Communication Error Messages
Message Description Corrective Action
Switch Setting Mismatch Switch settings do not match. Check that the node address is the same as the address in the last configuration. If not, change
back to the original node address or reconfigure. If the error occurs again, replace the controller.
Duplicate MAC ID One or more node addresses have been
duplicated.
Check the node addresses of the other nodes. Correct the configuration so that each node
address is used only once and then cycle the power supply.
Network PS Voltage Low The network power-supply voltage is low. Make sure the power supply voltage is set within the specification range.
Make sure a cable or wire is not disconnected.
Bus Off Communication has been cut off by frequent
data errors.
Make sure the communication rate of all nodes is the same.
Make sure the cable lengths of main or branch lines are not too long.
Make sure a cable or wire is not disconnected or loose.
Make sure terminating resistance is at both ends of the main line and only at both ends.
Make sure that there is not excessive noise in the system.
Transmission Timeout Transmission has timed out.
Standard I/O Connection Timeout The standard I/O connection has timed out.
Relevant Safety I/O
Communication Stopped Because
of a Safety I/O Communication
Error
The corresponding safety I/O connection was
stopped due to a safety I/O connection
timeout.
All Safety I/O Communication
Stopped Because of a Safety I/O
Communication Error
All safety I/O connections were stopped due to
a safety I/O connection timeout.
Safety I/O Connection Timeout The safety I/O connection has timed out.
Nonexistent Slave Device No slave device in the system.
Safety I/O Connection
Establishment Failure
An error occurred in establishing a safety
connection.
Make sure the device is configured and operating normally.
Invalid Slave Device An unauthorized slave device is on the
network (verification error).
Verify the slave device and connect a suitable slave device.
EM Transmission Error (Duplicate
MAC ID)
Unable to transmit due to node address
duplication.
Check the node addresses of the other nodes. Correct the configuration so that each node
address is used only once and then cycle the power supply.
EM Transmission Error (Invalid
Header)
Unable to transmit due to invalid header. Check the node address, the class ID, and the instance ID of the transmission message.
EM Transmission Error (Device
Offline)
Unable to transmit because the local device is
not on the network.
Make sure the communication rate of all nodes is the same.
Make sure the cable lengths of main or branch lines are not too long.
Make sure terminating resistance is at both ends of the main line and only at both ends.
Take precautions against excessive noise.
Make sure the power supply voltage for the network power source is set within the specification
range.
EM Transmission Error (Message
ID Error)
Unable to transmit due to a message ID error.
EM Transmission Error (Response
Timeout)
Unable to transmit due to response timeout.