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Showing results for tags 'M91'.
Hi guys, Yesterday i had a phone call from a customer telling me that he cannot change any value of the user preset variables (Timers, MI's) on the screen because ENTER key is not working. PLC model is M91-2-R1 installed 4 years ago. Anyone had this issue in the past? Is there any way to assign the function of ENTER key to another button?