Description: Identifies the values of prtAlertIndex,
prtAlertSeverityLevel, prtAlertGroup,
prtAlertGroupIndex, prtAlertLocation, and prtAlertCode
for the latest critical evnet in the prtAlertTable.  The
binary string is defined as following:  
------------------------------------------------------  
 Field | Filed  | Description  
Offset | Length |  
------------------------------------------------------  
   0   |    4   | the value of prtAlertIndex  
   4   |    4   | the value of prtAlertSeverityLevel  
   8   |    4   | the value of prtAlertGroup  
  12   |    4   | the value of prtAlertGroupIndex  
  16   |    4   | the value of prtAlertLocation  
  20   |    4   | the value of prtAlertCode  
------------------------------------------------------  
Each field is in Big Endian style.
Additional information:
This object is used to pass alert information
from the peripheral to the IIO card.  The standard printer
MIB contains the following description:  

printerAlert TRAP-TYPE  
ENTERPRISE printerV1Alert  
VARIABLES { prtAlertIndex, prtAlertSeverityLevel, prtAlertGroup,
prtAlertGroupIndex, prtAlertLocation, prtAlertCode }  
DESCRIPTION  
'This trap is sent whenever a critical event is added to the
prtAlertTable.'  

In order to provide this information in the trap packet, the
IIO card enables traps on channelPrinterAlert.  When a
critical alert is generated the peripheral fills the
appropriate value into this object and sends it to the card.
This object is a structure which contains 24 bytes of data.
The structure is:  

struct structAlertInfo {  
sint32 prtAlertIndex;  
sint32 prtAlertSeverityLevel;  
sint32 prtAlertGroup;  
sint32 prtAlertGroupIndex;  
sint32 prtAlertLocation;  
sint32 prtAlertCode;  
} thisAlertData;