The MODBUS RTU/ASCII protocols are communicated over a RS485 connection. This is usually connects via a serial RS485-to-USB converter to the computer.
You need to install the corresponding serial driver for the chipset of this converter on your PC, otherwise no serial port for the device is created by your operating system on connecting the machine. Most common drivers are
- FTDI VCP: FTDI Chip
- CP210x: Silicon Labs
- PL2303: Prolific
Watch out! The FTDI driver is preinstalled on virtually all Linux distributions as well as all OS X versions supported by Artisan. Installing an additional FTDI driver on those operating system might lead to instabilities!
Serial Driver Cheat Sheet
.. table to be extended and corrected as we receive new information form you ..
|Besca||FTDI||CH34x on some older machines|
|BellaTW||PL2303||CH34x on some machines|
|BlueKing||CP210x||on some older machines FTDI, on others CH34x|
|BC Roasters||CP210x||on some older machines FTDI, on others CH34x|
|Dongyi||CP210x||FTDI on some older machines|
|Toper||CP210x||CH34x on some machines|