Fixme.ch:OldWiki/Kaba

Specs

 * Have USB to RS485 USB-485 Converter Adapter
 * CH341D chipset, 75bps - 115200bps, 1200m(max)
 * USB Product ID: 0x7523, Vendor ID: 0x1a86.

New USB to RS485 USB-485 Converter Adapter Support Win7 XP Vista Linux Mac OS    Item Description: 100% Brand new and high quality. USB to RS485 Converter Adapter USB connector: to your PC    RS485 connector: to your RS485 device No need external power, powered by USB port Fully compliant USB 2.0 standard, backward compatible with USB1.1 Specification: Dimension:6.0 x1.8x1.4cm Color: Black Support System: Windows XP, Vista, Windows 7 , Linux , MacOS , and WinCE5.0 drive Supports baud rate range : 75bps - 115200bps, up to 6Mbps Supports Plug, Play and hot-swap ( USB side) ; Better than using CH341D chip or similar chip to support the laptop USB port. Communication distance up to 1.2KM, with anti-jamming performance of industrial site ; Work temperature range: -40°C ~ +85°C Communication distance :1200m(max) Applications: All kinds with RS485 port device parameter settings, data communication Short distance, such as parameter settings of the computer peripheral equipment , the use of common data lines can be. A and A port of the device when the wiring is connected, B and device B connected. Some devices D + A and D, - B. LED display of communication data Machine PLC data reading and writing Monitoring data read and write, and PTZ control Centralized control of household electrical appliances Access Control System ; card; A variety of industrial automation ; instrumentation; Parking ; bus fees; Dining Hall ; staff attendanceHighway toll station; ATM machine

Linux
You can use cu or minicom, possibly even screen. Line in use error: apt-get install cu setserial gpasswd --add ${USER} dialout cu -l /dev/ttyUSB0

Hardware info root@ubuntu:~# dmesg | egrep --color 'serial|ttyS' [  13.850611] usbcore: registered new interface driver usbserial [  13.850635] usbcore: registered new interface driver usbserial_generic [  13.850654] usbserial: USB Serial support registered for generic [  13.854053] usbserial: USB Serial support registered for ch341-uart

root@ubuntu:~# lsusb -v Bus 002 Device 002: ID 1a86:7523 QinHeng Electronics HL-340 USB-Serial adapter Couldn't open device, some information will be missing Device Descriptor: bLength               18 bDescriptorType        1 bcdUSB              1.10 bDeviceClass         255 Vendor Specific Class bDeviceSubClass        0 bDeviceProtocol        0 bMaxPacketSize0        8 idVendor          0x1a86 QinHeng Electronics idProduct         0x7523 HL-340 USB-Serial adapter bcdDevice           2.54 iManufacturer          0 iProduct               2 iSerial                0 bNumConfigurations     1 Configuration Descriptor: bLength                9 bDescriptorType        2 wTotalLength          39 bNumInterfaces         1 bConfigurationValue    1 iConfiguration         0 bmAttributes        0x80 (Bus Powered) MaxPower              96mA Interface Descriptor: bLength                9 bDescriptorType        4 bInterfaceNumber       0 bAlternateSetting      0 bNumEndpoints          3 bInterfaceClass      255 Vendor Specific Class bInterfaceSubClass     1 bInterfaceProtocol     2 iInterface             0 Endpoint Descriptor: bLength                7 bDescriptorType        5 bEndpointAddress    0x82  EP 2 IN        bmAttributes            2 Transfer Type           Bulk Synch Type              None Usage Type              Data wMaxPacketSize    0x0020  1x 32 bytes bInterval              0 Endpoint Descriptor: bLength                7 bDescriptorType        5 bEndpointAddress    0x02  EP 2 OUT bmAttributes           2 Transfer Type           Bulk Synch Type              None Usage Type              Data wMaxPacketSize    0x0020  1x 32 bytes bInterval              0 Endpoint Descriptor: bLength                7 bDescriptorType        5 bEndpointAddress    0x81  EP 1 IN        bmAttributes            3 Transfer Type           Interrupt Synch Type              None Usage Type              Data wMaxPacketSize    0x0008  1x 8 bytes bInterval              1

Mac plug and play WCH341-Terminal

Linux