Access to variables from another PLC



  • @tomas_hora Is there documentation or an example project available? I need to communicate an int between the two devices.


  • administrators

    @mdturnerphys Unfortunately no. But for example, you will need to create a Server channel on one side (A) select port different than 502 and map your variables to holding/input registers/coils so you can read and write to them from the other (B) side. You can map the variables to Units for example 0-10 (if you need more, just map it as you wish). On the other side just create a custom device on Modbus TCP channel (B), set the IP address and port of the (A). Then on (B) create a read group with starting register 0 and 10 number of registers and map the variables from (A) to data points (create datapoint by right click, assign read group...). Check F1 help of Mervis for 'Modbus' there is a nice explanation. You can also check eg. the Inepro example project from our downloads section.



  • @tomas_hora Any updates on when the SSCP fix will be released?


  • administrators

    @mdturnerphys Sure! We expect to release the new Mervis IDE and required tutorials on our new knowledge base this Friday.