Accessing Mervis variables through Evok

  • Hi,

    Is there any way to set and get the variables defined in Mervis through Evok? Let's say i have a script that gets some data and would like that my mervis program acts upon that data. Can i use the Evok API in order to set some variable to the value that i get from the script? Or is this possible in any other way?


  • administrators

    @n1lp0int3r Right now you can do it but not easily. When someone is asking for an interface between Mervis and other application, we suggest making a TCP Modbus channel and device in Mervis and map the variables to registers.

    In Evok, there is no full support of making a proper TCP/RTU Modbus client or server (even though the TCP Modbus client is used to interface with neuron IOs and TCP Modbus Server provides access to DI of UniPi 1 for Mervis). But the support is hardcoded in evok so you would have to figure it out yourselves how it works...

  • Oh ok. One point that i didn't understood correctly is how we can make that mapping. In order to acomplish that i should interact with the TCP Modbus server and present to it a new device is that it?
    If i understood correctly is there any documentation that you can point?


  • administrators

    @n1lp0int3r Exactly...

    You can use the Modbus Client in evok which is used in Neurons and create a custom device which will periodically read from registers or write to register on event...

  • Ok i can see now. Thanks

Log in to reply

Looks like your connection to Forum was lost, please wait while we try to reconnect.