Send Diagnostic
Julyl 2017 Command Set 237
Send Diagnostic
The Send Diagnostic command (1Dh) requests the library to perform a self-diagnostic
test. The library accepts this command for compatibility, but does not perform any
action.
TABLE 4-132 Send Diagnostic Command
Byte
Bit
76543210
0 Operation Code (1Dh)
1 Ignored PF Rsvd
(0)
SelfTest
(1)
DevOfl
(0)
UnitOfl
(0)
2 Reserved (00h)
3
to
4
(MSB)
Parameter List Length
(LSB)
5 Control Byte (00h)
Send Diagnostic Command Descriptions:
PF The library supports the page format (PF) specified by SCSI-3.
The value of PF should be 1. However, the library accepts a 0 for self test.
SelfTest The library returns a value of 1, indicating a request to the library to complete
the library’s default test.
DevOfl This feature is not supported by the library; the value is set to 0.
UnitOfl This feature is not supported by the library; the value is set to 0.
Parameter List Length For the self-test option, a value of 0h is required.