EJfr Posted February 12, 2021 Report Share Posted February 12, 2021 Hello, I have designed a machine for my French company that is fitted with a Jazz JZ10-11-T40. The machine is working well, but I have a recurring random issue. When the Jazz PLC is switched on : sometimes, all is running well (the 5 inputs values have correct logic value), and sometimes the PLC works and the 5 inputs values were inverted... and this occurs randomly. I mean : Sometimes, after having switched the PLC on, the 5 inputs are correct (input I0 to I4) : -2 x laser sensors are on logic 1 (no detection because no objects to be detected) -Two switches are on logic 0 (the switches are in off position) -The last input from a 5th sensors is on logic 1. Sometimes, after having switched the PLC on, all the inputs are inverted and results as following : -2 x laser sensors are on logic 0 (detection should be 1 because nothing is present and detected) -Two switches are on logic 1 (even if the switch are in 'off' position) -The last input from a 5th sensor is also inverted in logic 0. In any cases, the eight outputs are always correct. I hope my description is clear enough. Did one of you got same issue? Do you have any idea about what can occur or what can be the root cause? Think you in advance for your help. Quote Link to comment Share on other sites More sharing options...
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