Hi.
A quick question. I added an image that let you see what i want.
I've made some sensors on modbus IP.
But my problem is I need to cable between each sensor to switch. (top)
I want to do this so i have 2 RJ45 plugs so I don't need to drag a cable to switch.
Anyone?
I'm guessing you're looking for RJ45 crossover plugs. I've not found any! You can get crossover sockets and crossover plug to socket, but not plug to plug, afaik. I suggest you make up short cables. Not sure if I've understood your question, 'though.
Have you considered RS485 multi-drop?
There you can connect all your arduino's to a 2 wire bus.
Best Regards,
Johi.