Test Unit Ready
240 SL150 Interface Reference Manual Julyl 2017
Test Unit Ready
The Test Unit Ready command (00h) allows the initiator to determine if the library is
powered-on and ready to accept additional commands. This is not a request for a
library self-test.
The Test Unit Ready command returns a Good status if the library is ready to accept
additional commands. This command also returns a Check Condition if the library is
not ready or if there are pending Unit Attentions.
TABLE 4-135 Test Unit Ready Command
Byte
Bit
76543210
0 Operation Code (00h)
1 Ignored Reserved (00h)
2 Reserved (00h)
3 Reserved (00h)
4 Reserved (00h)
5 Control Byte (00h)