Send Diagnostic Command - Fujitsu M3097G Oem Manual

l. Sense>key specific bytes: Bytes F to 11
This field is reserved on this scanner.
(X©00000000π must not be expected.)
4.4.5

SEND DIAGNOSTIC command

The following table shows the normal sequence of the SEND DIAGNOSTIC
command when used with this scanner.
Step Bus phase
1 BUS FREE
2 ARBITRATION
3 SELECTION
4 MESSAGE OUT
5 COMMAND
6 STATUS
7 MESSAGE IN
8 BUS FREE
(1) SEND DIAGNOSTIC command: COMMAND phase (initiator Æ target)
The SEND DIAGNOSTIC command is used by an initiator to request a target or
logical unit for self>test. Two types of self>diagnostic are: (a) the self>test performed
by the unit itself, and (b) the test conducted according to the instruction data from
the initiator.
This scanner supports the self>test only.
The results of self>test are reported using the status and sense data.
The CDB of this command is shown in the following illustration.
4 $ 34
Initiator operation
Verifies bus free
Obtains bus>usage
right
Selects target
Selects logical unit
Specifies SEND
DIAGNOSTIC
(CDB)
¨ Æ Target operation
Æ
Drives BSY signal
Æ
Æ Performs self>test
¨ Reports GOOD status
¨ Reports message (Command
Complete)
Releases BSY signal