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How to establish communication between Quantum PLC and ClearSCADA by modbus TCP/IP ?

Published date: 12 March 2021


Follow these steps for the communication setup.

1. Right click on the folder > select New > select Modbus > select Channel to create a new Modbus channel.



2. Now again right click on the folder > select New > select Modbus > select Scanner to create a new Modbus scanner.



3. Double click on the new channel to open the channel configuration window. Click on the Primary Port tab and select the Connection Type as TCP/IP from the drop down list. Now save & close channel configuration window.



4. Double click on the New Scanner to open the New Scanner configuration window. Click on the Scanner tab > Select the Channel > Enter the Data Address and Data Length which we are going to read > Select the register type from the Location drop down list.



5. Now click on the Primary Port tab and select the Connection Type as Network > enter the Host Address > enter the Port as 502 > select the Communications Type as Mod bus TCP. Now save & close Scanner configuration window.



6. Now all configurations are complete. To view the communication status, right click on the New Scanner and select the view status.



7. If the communication is healthy the State value should display as Online & Value of Quality field should display Good. Now create some points, configure it and check the values.


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