addCommand
addCommand
Adds a command to the command buffer. Sends the ESC/POS command.
Parameters
data
Uint8Array
Specifies the ESC/POS command. Specifies the binary data.
Returns
Promise<void>
Errors
| Error status | Description |
|---|---|
| ERR_PARAM | An invalid parameter was passed. |
| ERR_TIMEOUT | Failed to communicate with the devices within the specified time. |
| ERR_MEMORY | Necessary memory could not be allocated. |
Supplementary explanation
- Refer to the following URL for details of the ESC/POS command. https://www.epson-biz.com/pos/reference/
- Epson ePOS SDK does not check the commands sent using this API. If the commands interfere with Epson ePOS SDK operations, other APIs may work wrongly or status val- ues may become invalid. This API should be used with a full understanding of ESC/POS commands and the receipt printer specifi- cations.