Modbus tcp server example

Hello all,
I am trying to find a simple example for a modbus tcp slave example but i i cannot find anything on google.I could find a master example which works ok but no slave....any clues anyone???
Thank you very much

 

Isn't that master sends request and slave filters requests and send response accordingly?

So I think you would need have listener on the slave.

May I ask, why you are using MODBUS protocol, to communicate between Unity application instances? Is that for industrial hardware simulation purposes, or you want to communicate actually with imdustrial hardware?

 

Hello!
Well i am experimenting with a project that i i have a master and a slave of my own (embedded with microchip controllers) and i want to add an android app as a slave also for visual purposes.
I chose modbus because it is easy to transfer value data from sensors.and it is intended for industry too.
I think it will be nice to implement all the benefits of unity in such a project.
As a master its great but it is limites in one screen only but as a slave i can add as many as i want....but there is no example and i dont have the necessary knowledge in c# or unity to started from scratch...
Thank you very much for your interest!

 

It is because Unity primarily is game maker tool.
However, I wouldn't be using MODBUS just to communicate between Unity instances. You just need send ID to identify slave. Or in other words a network client. In case of modbus, you may be interested to look into network package structure. I did that so long ago, but if I recall correctly, you need consider little/big endian, and there was also CR check bytes at the end of package. Data in the middle. So you could construct and deconstruct own packages. I suspect you may be aware of that anyway, judging after your other thread.

However, normally you would be building authorative server and clients solution, just to communicate between Unity game/app instances. Just as typical game. Would be much simpler to handle. And there are tons of supports on the topic.

I would use modbus protocol only, if as you mentioned, try to communicate directly with industrial hardware, and there is no other means of translating data to TCP/IP/UDP protocols.

 

Thank you very much!!!!
But unfortunately yes i i t to communicate with industrial hardware too but i i do dot know any other way of making it....
If someone has any idea i would appreciate it...
Thank you very much