Send Diagnostic - X'1D'

The Send Diagnostic command is supported by the tape library. Send Diagnostic is used to initiate the library's self-test diagnostics. Table 1 shows the command format.
Table 1. Send Diagnostic Command
Byte Bit 7


Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0


0 Operation Code (X'1D')
1 LUN (Obsolete) PF (B'0') Reserved SlfTst (B'1') DevOfl (B'0') UnitOfl (B'0')
2 Reserved
3 Parameter List Length (X'0000')
5 Vendor Specific (B'00') Reserved (B'0000') Flag (B'0') Link (B'0')