Rockwell Automation 6008-SI IBM PC I/O SCNNR 6008-SI - Manual (Page 85)

Chapter 7
Scanner Management
7-18
Arguments:
same as for cfg_info above.
Returned values:
an integer that can then be examined for the status values described
below (leading characters SF_). You may prefer to call the xlat_flt
function to convert the status bits to an English language string.
Before calling the flt_info function, your program should first examine
the SL_IN_SCAN bit in the configuration byte for the same adapter,
which can be obtained through cfg_info as shown in the sample code
below. If SL_IN_SCAN is false (0), the fault information is
meaningless.
Fault and Fault Dependent Group Bit Fields
The fields listed in Table 7.B are defined in the high byte of information
about each adapter. The fault information byte can be extracted by using
the flt_info function described above.
Table 7.B
Fault and Fault Dependent Group Bit Field Descriptions
Bit Field Hex Value Description
SF_ON_LINE 70 (hex) true (1) if the adapter is on line, false (0) if faulted.
SF_IN_FGRP 08 (hex) true (1) if the adapter is in a fault dependent group.
SF_GRP_NUM 07 (hex) number of the fault group this adapter belongs to (meaningless
if SF_IN_FGRP is zero).
SF_GRP_FLT 80 (hex) true (1) if this adapter has been instructed to go into fault mode
because a member of its fault group is faulted.
You can extract the fault dependent group number (0-7) by ANDing the
fault information byte with the constant SF_GRP_NUM, provided that the
SF_IN_FGRP bit is set.
Coding Examples
Here’s some sample code to extract the fault dependent group number:
status = flt_info(&pkt, rack, group);
if ( status & SF_IN_FGRP )
fdg_number = status & SF_GRP_NUM;
else
fdg_number = -1; /* no fault dep group */