Hardware reference guide

I/O Modules
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35013379 11/2011
Table/Module Configuration
The following figure shows the table/module configuration.
Given the above sample configuration, if you select 300001 as the starting address
of the status table and there are no I/O modules in the first two locations, the first
I/O module status is found in the least significant byte of the second word (i.e.,
position 3). The table fills until the last I/O mapped module is found.
NOTE: The bit pattern reported in each status/error byte is dependent on the module
type.