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How to fix the CAT ET SIS error

 

 

This means you have communication error between your CAT II / III adapter and the CAT ET SiS software setup. Usually it is a simple fix.

– In the CAT software go to UTILITIES   =>   PREFERENCES   =>  COMMUNICATIONS – CHOOSE: CATERPILLAR COM ADAPTER II – CHOOSE under PORTS: COM 7 – Click “OK” – Restart the computer and usually that is all you

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