micapp Posted June 16, 2019 Report Share Posted June 16, 2019 Hello Is it possible to access (read/write) MB and MI directly by a sequence sent to USB-port from external device (i.e. Arduino serial pin) Link to comment Share on other sites More sharing options...
AlexUT Posted June 17, 2019 Report Share Posted June 17, 2019 Hi, 1. You can use MODBUS protocol, if you find it (or write it) for Arduino. 2. Download Unitronics PCOM Protocol description from next link: https://unitronicsplc.com/Download/SoftwareUtilities/Unitronics PCOM Protocol.pdf This protocol used for VisiLogic to PLC communication. B.R. Link to comment Share on other sites More sharing options...
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