Publication 1766-RM001A-EN-P - October 2008
Function Files
89
Input/Output Status File
The input/output status (IOS) file is a read-only file in the controller that
contains information on the status of the embedded and local expansion
I/O. The data file is structured as:
Input/Output Status File
Word
Description
0
Embedded Module Error Code – Always zero
1…4
Expansion Module Error Code – The word number corresponds to the module’s slot number. Refer to the I/O module’s
documentation for specific information.
(MicroLogix 1400)
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