Read QR
This function enables you to use the device's camera to scan a QR or barcode (depending on the code format filters applied) and saves the result in "Decoder Text".
Parameter Configuration
This function requires you to complete input parameters with a timeout, and several non-mandatory parameters such as image size or input source. See the Input Registers section to learn more.
Function ID
Register | Value |
|---|---|
110 | 2 |
Input Registers
Register | Description | Mandatory | Value |
|---|---|---|---|
334 | Timeout | Yes | Timeout to successfully reading the QR or barcode. |
356 | Code Formats to Decode | No | <<QR FORMAT FILTER>>. Read Code Formats to Decode to learn more. |
392 | Input Code Source | No | Use file to obtain the code from an image file, or use camera to obtain the code from the device's camera. If left blank, the default value is camera. |
393 | Max Image File Width Size | No | Image width size limit in pixels, example: 1024. It only works when configuring the code source parameter with the file value. |
393 | Max Image File Height Size | No | Image height size limit in pixels, example: 768. It only works when configuring the code source parameter with the file value. |
Code Formats to Decode
See below to learn about the code formats to decode (parameter 356).
Value | Description | Type |
|---|---|---|
Blank | No filter applied, all formats are supported | 1D, 2D |
1D | Any 1D barcode supported by platform | 1D |
2D | Any 2D barcode supported by platform | 2D |
QR | QR format | 2D |
BARCODE | Any 1D barcode supported by platform (backward compatibility) | 1D |
CODE_39 | Barcode format | 1D |
CODE_93 | Barcode format | 1D |
CODE_128 | Barcode format | 1D |
EAN_8 | Barcode format | 1D |
EAN_13 | Barcode format | 1D |
ITF | ITF barcode format | 1D |
RSS_14 | Barcode format (if supported by platform) | 1D |
RSS_EXPANDED | Barcode format (if supported by platform) | 1D |
UPC_A | Barcode format (if supported by platform) | 1D |
UPC_E | Barcode format | 1D |
DATAMATRIX | 2D code format | 2D |
INTERLEAVED_2_OF_5 | ITF barcode format | 1D |
AZTEC | Barcode format | 2D |
PDF_417 | Linear barcode format | 2D |
Output Registers
Register | Description | Value | ||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
112 | Call Result | Table 8. Version 2
Table 9. Version 3
Table 10. Version 4
| ||||||||||||||||||||||||||||||||||||||||||||||||
335 | Decoder Text, Call Result | <<REGISTRATION_ID>> |