How to Develop Serial Port for Terminals

When using the C API to open a serial port, you need to set the device name of a serial port as a parameter.

Device Name

Parameters

device name

The alias for serial port. Available values: DB9, GS0_01, WIZARHANDQ1, Q1_USB_SERIAL, USB_SERIAL, SERIAL_EXT, USB_SLAVE_SERIAL, USB_HOST_SERIAL

in W1/W1V2:
- DB9: works for DB9 port at the back side of the terminal.
- GS0_Q1: works for USB host port at the right side of terminal to connect with Q1 via USB cable in master mode.
in Q1 3g:
- WIZARHANDQ1: works for USB serial port in slave mode.
- Q1_USB_SERIAL or USB_SERIAL: works for USB serial port in master mode.
- SERIAL_EXT: works for internal fiscal/other serial port module.
in Q1 4g and Q2(K2, M2, M3, QD4/5), Q3 series and others:
- USB_SLAVE_SERIAL: works for USB serial port in slave mode.
- USB_HOST_SERIAL or USB_SERIAL: works for USB serial port in master mode.
- SERIAL_EXT: works for internal fiscal/other serial port module.

When using the Java API to open a serial port, you need to set the logic ID of a serial port as a parameter.