24: REMOTE I/O SYSTEM
OPENNET CONTROLLER USER’S MANUAL 24-21
0BFAhex (BUS FAIL)
0BFBhex (BUS FAIL)
Meaning Multiple errors at the specified device during startup or permanent diagnostics.
Cause
The error occurs due to
– installation errors,
– a defective INTERBUS device.
Error location
The specified device, the preceding complete bus as well as all devices connected to OUT2 of the
specified device.
Remedy
Check your system for:
– missing or incorrect shielding of the bus cables (connectors),
– missing or incorrect grounding/equipotential bonding,
– poor connections in the connector (loose contact, dry joint),
– cable breaks in remote and local bus cabling,
– voltage dips on the communication voltage supply of the remote bus devices.
Add_Error_Info INTERBUS device number (Segment . Position) of the INTERBUS device.
Meaning Error detected by means of quick diagnostics.
Error location
The specified device, the preceding complete bus as well as all devices connected to OUT2 of the
specified device.
Remedy
Check your system for:
– missing or incorrect shielding of the bus cables (connectors),
– missing or incorrect grounding/equipotential bonding,
– poor connections in the connector (loose contact, dry joint),
– cable breaks in remote and local bus cabling,
– voltage dips on the communication voltage supply of the remote bus devices.
Add_Error_Info INTERBUS device number (Segment . Position) of the INTERBUS device.
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