How to comfirm the baut rate of Serial Port Thermal Printer
Pos thermal printer, usually it has 3 kinds of baud rate for Serial interface, 9600bps, and 19200bps, 38400bps, how to conclude the right baud rate of current thermal printer, first, Hold down the FEED button and turn on the printer while the Feed button is held down. After 3-5 seconds, the printer will print out the test page. You can find the right Serial baut rate of the printer, after checking the current status in the self-test page.
Sometime, it will garbled when setting serial port printing, you can check the baut rate setting wether it is same as the printer.