I/O Scanner: Health Block Bits
Original instructions
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Health Block Bits
The health block is the block of 4 words (%IW) topological objects that give the health status of the I/O scan.
Each health block bit corresponds to an entry in the I/O Scanner table. Each entry represents one logical device. If a health bit is switched to 0, the health status on the corresponding device is bad.
The following table shows the corresponding health bit for each device based on its table entry:
The bits in the health block (mapped to %IW topological objects) correspond to the different data types:
Table Entry
Health Bits
Comment
1
%IWr.m.c.1.0
r: rack number
m: slot number located by the module
c: module channel number (always 0 for BMX NOE 01x0)
Example: If a BMX NOE 01x0 module is configured in rack 0, slot 3, then the health bit for table entry 2 is stored in $IW0.3.0.1.1.
2
%IWr.m.c.1.1
3
%IWr.m.c.1.2
. . .
17
%IWr.m.c.2.0
18
%IWr.m.c.2.1
19
%IWr.m.c.2.2
. . .
33
%IWr.m.c.3.0
34
%IWr.m.c.3.1
35
%IWr.m.c.3.2
. . .
49
%IWr.m.c.4.0
50
%IWr.m.c.4.1
51
%IWr.m.c.4.2
. . .
64
%IWr.m.c.4.15