4-3.30 Test Unit Ready Command 00H; 4-3.30.1 Test Unit Ready Cdb Description; 4-3.30.2 Test Unit Ready Check Condition Status; Table 4-127. Test Unit Ready Field Description - Fujitsu M2488 Product Manual

TAPE UNIT SCSI COMMANDS
4-3.30 TEST UNIT READY command 00h
The TEST UNIT READY command provides a means to check if the logical unit is ready. This is not
a request for a self-test. If the logical unit would accept an appropriate medium-access command
without returning CHECK CONDITION status, this command returns a GOOD status.
4-3.30.1 TEST UNIT READY CDB Description
TEST UNIT READY is a six-byte command. The bytes are as shown below and described in
Table 4-127. Common fields are described in paragraph 4-3.1 on page 4-4.
7
BYTES
0 0
1
2
3
4
5
Note: Changeable fields in the CDB are shaded.

Table 4-127. TEST UNIT READY Field Description

BYTE BIT VALUE
0 0-7
4-3.30.2 TEST UNIT READY CHECK CONDITION Status
If a tape is not inserted or the drive is not ready, CHECK CONDITION status is returned with the
sense key set to NOT READY.
4-138
6 5 4
0 0 0
LUN
Reserved
00H Operation code.
CG00000-011503 REV. A
M2488 PRODUCT GUIDE
BITS
3 2
0 0
Reserved
Reserved
Reserved
Reserved
DESCRIPTION
1 0
0 0
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April 1997