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Why is the IO not working after downloading my program to my Modicon Micro 311/411 or 512/612?

Published date: 24 September 2018

The Modicon Micro requires that MIC files be installed in the Traffic Cop or hardware configuration. Each MIC file will enable specific functionalities such as discrete I/O, analog I/O, counters or interrupts depending on which Modicon Micro model you have. The description for the MIC files can be found in the Modicon Micro Ladder Logic Manual (890USE14600) on pages 26 and 27. You can download this manual by doing a search on and entering the part number of the manual in the query window.


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