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
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| 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 module.
- in Q1 4g and Q2, Q3, QD4/5 series:
- 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 module.
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