Hey all! I’ve been trying to read data from Autonics TK-4S temperature controller connected to Jetson Nano via RS485 to USB adapter (ch341). I can read data from both my Linux laptop using minimodbus Python module and from my Windows PC using Simply Modbus. Both computers use the same connection to…

please refer to this topic, [image] How to connect NVIDIA Jetson Nano to a velacio PLC using RS485 Jetson Nano We don’t provide such rework. For USB to RS485 which should be handled by external converter, for Jetson, it is just a USB port. And so to the UART to RS485, cust…

Hi @Polzovatel3366 , Welcome to the NVIDIA Developer forums! You actually posted in the Cumulus Linux category, this should be placed in the Jetson Nano section. I can move it over for you. Best, Tom K

hello Polzovatel3366, please check Jetson Nano Product Design Guide , and please check the 11.3 UART chapter for the UART Connections. the serial port on the Nano side register is as ttyTHS*, you may check $ dmesg | grep THS for reference, thanks

Well, yes, but I am trying to connect the temperature controller via USB-RS485, not via the UART1 interface on the Nano itself. Moreover, opening /dev/ttyTHS1fails because there is no device connected. Are you sure that when I am using USB adapter I do not need to use /dev/ttyUSB0? On all of my oth…

which Jetson interface you’re using?

USB. I am connecting USB to RS485 adapter to the USB port of Jetson Nano. Since in dmesg I see a message something like “UART interface connected to ttyUSB0”, I guess that the driver of the connector itself (ch341) works just fine. And again, the adapter is not faulty, if I connect it to my laptop…

Jetson Nano: pselect timeout when working with USB to RS485 adapter (ch341)

Robotics & Edge Computing Jetson Systems Jetson Nano

JerryChang December 16, 2021, 7:27am 9

please refer to this topic,

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Jetson Nano: pselect timeout when working with USB to RS485 adapter (ch341)

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