UniPi 1.1 and WeIntek interfacing
I'm not very knowledgeable about communication, so a lot of detail would be much appreciated.
I want to connect my WeIntek MT8071iP to by UniPi 1.1 without needing a network connection. Is this possible? What are the required cables?
an alternative way to read data from the is Modbus RTU utilizing the RS485 serial line. Unfortunately, that only available as a standard feature of Neuron and Axon lines, but not in Unipi1. However you can use any USB-RS485 converter which is available on the market.
So, I can't use a DE-9 to Rj-11? Is the USB-A on the HMI a RS-485? Is there some guide for this?
my colleague meant something like this:
Then you will have RS485 on the Unipi 1.1 and you can connect to the Weintek over DB9. It will act as a additional serial port to the one exposed as RJ11 connector.
Thank you for the clarification, @Martin-Kudláček .