Epson POS: Difference between revisions
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* {{code|0A}} = Line feed | * {{code|0A}} = Line feed | ||
== Sending Bit Image == | |||
To store a bit image to NVRam, use the {{code|1C 71 01}} command, followed by 5 arguments: | |||
# xl - image width in bytes (ie. Ceiling of Image Width in Pixels / 8). Must be between 0 - 255 | |||
# xh - image width as multiples of 256. Must be between 0 - 3. | |||
# yl - image height in bytes (ie. Ceiling of Image Height in Pixels / 8). Must be between 0 - 255 | |||
# yh - image height in multiples of 256. Must be between 0 - 1. | |||
# bit image data. Length must be (xl + yl + ((xh + yh) * 256)) * 8. | |||
The image bitmap data is sent to the printer ordered from top to bottom, left to right. 8 pixels per byte. | |||
For example, sending a 4x4 black bitmap image would result in 8 bytes of data: | |||
# {{code|1111 0000}} - 1st column, 4 black, plus 4 blank pixels | |||
# {{code|1111 0000}} - 2nd column | |||
# {{code|1111 0000}} - 3rd column | |||
# {{code|1111 0400}} - 4th column. Last byte at the end of the image ends with 04. see below. | |||
# {{code|0000 0000}} - 5th column, outside of the original 4x4 image | |||
# {{code|0000 0000}} - 6th column | |||
# {{code|0000 0000}} | |||
# {{code|0000 0000}} | |||
It also seems like the end of the image is terminated with a {{code|04}} code... but i'm not sure if this is true as it isn't documented. It is sent by the logo utility though. | |||
== See Also == | == See Also == | ||
Revision as of 18:08, 15 March 2017
The ESC/POS is a set of instructions for thermal paper printers communicated over serial, parallel, or USB.
Instructions
See the command reference list below for a detailed list of instructions.
Epson's command list shows the command with ASCII names rather than the hex values, so sending 1B 40 to initialize a printer is equivalent to ESC @.
Here are some common instructions:
1B 40Initialize the ESC/POS printer1C 70 01 00= Print first bit image stored in NVRam1B 64 05 1D 56 01= Epson cutter command0A= Line feed
Sending Bit Image
To store a bit image to NVRam, use the 1C 71 01 command, followed by 5 arguments:
- xl - image width in bytes (ie. Ceiling of Image Width in Pixels / 8). Must be between 0 - 255
- xh - image width as multiples of 256. Must be between 0 - 3.
- yl - image height in bytes (ie. Ceiling of Image Height in Pixels / 8). Must be between 0 - 255
- yh - image height in multiples of 256. Must be between 0 - 1.
- bit image data. Length must be (xl + yl + ((xh + yh) * 256)) * 8.
The image bitmap data is sent to the printer ordered from top to bottom, left to right. 8 pixels per byte.
For example, sending a 4x4 black bitmap image would result in 8 bytes of data:
1111 0000- 1st column, 4 black, plus 4 blank pixels1111 0000- 2nd column1111 0000- 3rd column1111 0400- 4th column. Last byte at the end of the image ends with 04. see below.0000 0000- 5th column, outside of the original 4x4 image0000 0000- 6th column0000 00000000 0000
It also seems like the end of the image is terminated with a 04 code... but i'm not sure if this is true as it isn't documented. It is sent by the logo utility though.
See Also
PHP Library:
Epson's 'official' documents:
Epson's Logo Utility:
Command References:
- http://www.smartlab.at/tabshop-pos/escpos-codes/
- http://www.starasia.com/Download/Manual/escpos_cm_en.pdf
- http://content.epson.de/fileadmin/content/files/RSD/downloads/escpos.pdf
- http://www.aures-support.fr/DE/wp-content/uploads/2016/04/ESCPOS-command-manual20160428.pdf
- https://reference.epson-biz.com/modules/ref_escpos/index.php?content_id=72