Burkert 8792 - Error Messages on Field Bus Devices

227
Maintenance and Troubleshooting
35.1.5. Error Messages on Field Bus Devices
Display Causes of error Remedial action
MFI fault
Field bus board defective. Not possible, device defective.
Table 129: Error Messages on Field Bus Devices
On DeviceNet:
Display
(is displayed
approx. every
3 seconds)
Device status Explanation Troubleshooting
BUS offline
Offline
Device is not connected to the bus.
The network access procedure
(Duplicate MAC-ID-Test, duration
approx. 2 s) has still not ended.
The device is the only active network
node.
• Check whether the baud rate has
been correctly set network-wide.
• Bus connection including plug
assignment correct.
• Check operating supply and bus
connection of the other nodes.
BUS no
connection
Online,
no connection
to the master
Device is connected correctly to the
bus, the network access procedure
has ended without errors, however
there is no established connection
to the master.
• New connection established by
master.
BUS timeout
I/O connection
timeout
An I/O connection is in the TIME
OUT state.
• New connection established by
master.
• Ensure that I/O data is transferred
cyclically or, if COS confirmed, that
corresponding Acknowledge mes-
sages are sent by the master.
BUS critical err
Critical bus
error
Other device with the same
address in the network.
BUS offline due to communication
problems.
• Change address of the device and
restart device
• Error analysis in the network with a
bus monitor.
Table 130: Error message DeviceNet
On PROFIBUS:
Display Device status Explanation Troubleshooting
BUS offline
is displayed approx.
every 3 seconds
Offline.
Device is not connected to the
bus.
• Check bus connection including
plug assignment.
• Check operating voltage and bus
connection of the other nodes.
Table 131: Error message PROFIBUS
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Type 8792, 8793