Fujitsu 600C manual Command Sequence, Initial sequence

4.7 Command Sequence

This section describes the initial sequence and read sequence.

4.7.1Initial sequence

Host side Scanner side

Power ON/reset/initialize

Scanner does not respond for 3 sec

Verify the logical unit		INQUIRY	Prepare INQUIRY data
			Respond with INQUIRY data
		INQUIRY data
	..........................................................................................................................................................................

Verify scanner READY	TEST UNIT READY	Respond with GOOD status
		if READY
	Status byte	Respond with CHECK
Check status byte		CONDITION status if
Receive GOOD status		UNIT ATTENTION
Receive CHECK CONDITION
status	REQUEST SENSE	Prepare sense data
Request sense data	Sense data	Respond with sense data
Receive UNIT ATTENTION		Clear sense data (Release
sense data		UNIT ATTENTION)
....................................................................................................................................................................................
Verify scanner READY	TEST UNIT READY	Respond with GOOD status
		if READY
Check status byte	Status byte	Respond with CHECK
Receive GOOD status		CONDITION status if
Receive CHECK CONDITION		NOT READY
status
		Prepare sense data
Request sense data	REQUEST SENSE	Respond with sense data
Receive sense data
NOT READY	Sense data
HARDWARE ERROR
........................................................................................................................................................................

End (Ready to read)

End (Ready to read)

........................................................................................................................................................................

Abnormal termination

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