M3099GX/GH OEM Manual 3-33
INTERFACE
Table 3.11 INQUIRY Command
Bit
Byte
0
1
2
3
4
5
7 6 5 3 2 1 0
Operation Code (12h)
Page Code
Reserved
Allocation Length
Control
Logical Unit Number Reserved EVPD
4
EVPD (Enable Vital Product Data):
This bit of one specifies that the target shall return the optional vital
product data specified by the page code field. If the target does not
support vital product data and this bit is set to one, the target shall
return CHECK CONDITION status with the sense key set to
ILLEGAL REQUEST and an additional sense code of INVALID
FIELD IN CDB.
This bit of zero specifies that the target shall return the standard
INQUIRY data. If the page code field not zero, the target shall
return CHECK CONDITION status with the sense key set to
ILLEGAL REQUEST and an additional sense code of INVALID
FIELD IN CDB.
Page Code:
This field specifies which page of vital product data information the
target shall return (see ANSI SCSI-2 7.3.4). The supported vital
product data in this scanner is Page Code F0h.
The INQUIRY command shall return CHECK CONDITION
status only when the target cannot return the requested INQUIRY
data.
#03.pm5 98.2.22, 1:31 PM33