Waveshare Rs485 to POE ETH(B) - flash write error!
Posted: Wed Jun 17, 2026 10:10 am
I am definitely a beginner here.
I have a KH9.9 and have wired up a Waveshare Modbus adapter using POE.
I have the Modbus connected to a POE switch which is then connected to my Eero router.
When connected using POE, the power light on the WS is bright red. If I disconnect the ethernet cable and power the WS with a usb cable connected to a power socket, the power light is less bright.
With POE connected, I get a very faint yellow light on LINK. THe device is visible on Vircom.
My issue seems to be arising when I try to update the BIN file. I get a "flash wirte" error.
Any thoughts?
I've checked the wiring and pins and all seems fine.
I have a KH9.9 and have wired up a Waveshare Modbus adapter using POE.
I have the Modbus connected to a POE switch which is then connected to my Eero router.
When connected using POE, the power light on the WS is bright red. If I disconnect the ethernet cable and power the WS with a usb cable connected to a power socket, the power light is less bright.
With POE connected, I get a very faint yellow light on LINK. THe device is visible on Vircom.
My issue seems to be arising when I try to update the BIN file. I get a "flash wirte" error.
Any thoughts?
I've checked the wiring and pins and all seems fine.