Problem description:
To read the data of the hardware for temperature and humidity sensor, the hardware itself is very simple, use of USB extension 232 serial port, connect 232 turn after 485 transcoder, can be read normal equipment parameters of temperature and humidity, but after using USB extension of the original 485 HUB, cannot read parameters, only in the equipment of electric power and will be sent to: 00 3 f 3 f this information, the HUB of the brand model as the ATEN UC4854, has already consulted the manufacturer customer service, domestic technical personnel's idea, said he would ask the Canadian technology,,,

CodePudding user response:

That Canadian technology such as

This kind of thing need to they provide API access.

You didn't need to guess

CodePudding user response:

Then don't use 485 hub
But the 485 to 232 and then turn first usb, received the usb hub

CodePudding user response:

Estimate is not a big client technology in elaborate you ~ obviously

CodePudding user response:

refer to the second floor stherix response:

485 that don't use the hub
But the first 485 to 232 to usb, received the usb hub to

This is the final way, because don't want to take all the devices in a serial port, separate the convenient management