jj168 Posted June 10, 2022 Report Share Posted June 10, 2022 Hello, my unistream PLC system operation a period like few days weeks, then HMI show up the CPU error information as enclosed photo, reboot the plc can return to run, but still running a period the error show up again, the plc run light Color yellow and the error light on, can any one help tell me the problem and how to fix it. Sam Quote Link to comment Share on other sites More sharing options...
MVP 2021 kratmel Posted June 10, 2022 MVP 2021 Report Share Posted June 10, 2022 Please see this topic Quote Link to comment Share on other sites More sharing options...
jj168 Posted June 11, 2022 Author Report Share Posted June 11, 2022 Thanks for reply, but my error some differences, please see enclosed photo again, this is my screen with out return to run mode, but the screen show is Chinese, words same as English. I don’t had any C language in the program, it just a simple ladder logic and the communication use modbus and canbus. Quote Link to comment Share on other sites More sharing options...
BenjaRamos Posted June 11, 2022 Report Share Posted June 11, 2022 Hello, i have axactly the same problem, i notice that it happens when i enter to a screen with data tables, allways the same, and i have other plcs with similar programs and it is the first time that this happens, im using Rs485 to comunicate with other devices. Quote Link to comment Share on other sites More sharing options...
Ivgeny Posted June 14, 2022 Report Share Posted June 14, 2022 Hi All, First: please use the latest UniLogic version, which can be downloaded from: https://unitronics.exavault.com/share/view/31h4c-16gtwwlx You mentioned that you're using communication sockets, please be sure that you have also Socket RX, not TX only. The latest version ensures that you have the RX, otherwise, a compilation error is raised. 1 Quote Link to comment Share on other sites More sharing options...
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