Daniel_EWW Posted March 18, 2022 Report Share Posted March 18, 2022 Just to get a better system understanding... I assume, the the PLC cycle is the following: -> Read inputs -> Execute the ladder logic -> Write outputs I am interested in the following: - Modbus slave request. Is this done at the end of a cycle or asynchronous to the logic execution? (Data consistency) - Modbus master periodic/ aperiodic. Is this done at the end of a cycle or asynchronous to the logic execution? (Data consistency) - HMI display. Are the displayed values updated at the end of a cycle or asynchronous to the logic execution? (Data consistency) Thanks, Daniel Quote Link to comment Share on other sites More sharing options...
MVP 2023 Flex727 Posted March 18, 2022 MVP 2023 Report Share Posted March 18, 2022 Did you check the Help file? Starting up UniLogic can be a bit of a chore, but I happen to have VisiLogic running and find this in the Help file there: 1 Quote Link to comment Share on other sites More sharing options...
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