Unexpected Bus Free - Tandberg Data SLR7-140 PROGRAMMER Manual

Tandberg Data
6.6.

Unexpected Bus Free

An unexpected bus free occurs when the Initiator detects
a BUS FREE condition any time the Initiator does not
expect a BUS
unexpected bus
protocol error. The Drive terminates the current command
before going to the BUS FREE phase.
The Drive uses an unexpected bus free in the following
cases:
When the first message sent by the Initiator after a
successful selection is not an IDENTIFY, ABORT TASK
SET or TARGET RESET message.
When a MESSAGE PARITY ERROR message has been received
and the previous phase was not a message-in phase.
When a second IDENTIFY message with a LUN field value
different from the value in the initial IDENTIFY
message has been received in the same connection.
When the Initiator rejects the IDENTIFY message sent
by the Drive during a reconnection.
When a LINKED COMMAND COMPLETE or a LINKED COMMAND
COMPLETE W/FLAG message has been rejected.
When a RESTORE POINTER message has been rejected.
When a fatal internal error has been detected.
6-14 Tandberg SLR Product Line SCSI Functional Specifications
FREE condition.
free to inform
Message System
The drive uses
the Initiator of
an
a