I have a Groov RIO that I am trying to communicate to modbus devices via RS485. The Rio sees the usb-RS485 adapter and assigns it \dev\ttySer0. I add that into node red and send coms to the port. I never get an activity send or receive at the adapter. If I plug it in to other devices the adapter works and controls the devices.
The device is a Waveshare USB-RS232/485/TTL adapter. I have used them in several project excellent results on other devices.
As for the node to use, I stopped using this one because it was not being actively supported and we did experience some glitches over time. We moved to these nodes and never looked back.
Hey guys. I am currently working with device that uses RS-485 connection. Is there anyway of using the connection without any converter/connector. To be exact I am currently working with MP Filtri ICM 4.0.
The RIO does not support serial via its I/O pins (The EPIC has a dedicated serial module for it), so you must use the USB port and thus a USB to serial adapter for any serial communications you need to do.
They work very well and are very affordable, what is the reason you would rather not use one?