Mode Sense (10)
Julyl 2017 Command Set 155
Informational Exceptions TapeAlert Control Page
TABLE 4-80 shows the format of the Mode Sense (10) Informational Exceptions
TapeAlert Control page.
TABLE 4-80 Informational Exceptions TapeAlert Control Page
Byte
Bit
76543210
0 PS (0) SPF (0) Page Code (1Ch)
1 Page Length (0Ah)
2 Perf (0) Rsvd (0) EBF (0) EWasc (0) DExcpt
(1)
Test Rsvd
(0)
LogErr
(0)
3 Reserved (0h) MRIE (3h)
4
to
7
(MSB)
Interval Timer
(LSB)
8
to
11
(MSB)
Report Count
(LSB)
Informational Exceptions TapeAlert Control Page Definitions:
PS The Parameters Saveable bit is set to 0.
SPF The library returns a value of 0 for the SubPage Format bit, indicating page_0
format is being used.
Perf The performance bit is 0, which indicates acceptance of informational
exception operations that cause delays.
EBF Enable Background Functions bit will always be 0.
EWasc Enable Warning bit will always be 0.
DExcpt The exception bit is 1, which indicates that the library disables all information
exception operations ignoring the MRIE field.
Note – In this mode, the software must poll the TapeAlert Log page.
Test The test operations bit is 0, which requests the library not to generate any
false/test informational exception conditions.
LogErr The log information exception conditions bit is 0, which indicates that logging
of informational exception conditions is vendor-specific.
MRIE This field indicates the method the tape library uses to report informational
exception conditions.
The field is set to 3h but is ignored because the DExcpt bit is on.
Interval Timer Bytes 4 through 7 are set to 00h, which indicates that the library will only
report the informational exception condition one time.
Report Count Bytes 8 through 11 are set to the current report counter value.