Thermal printer scale, how to link with cloud APP?

Question

Do it yourself

Hello!
We are developing a cloud system for online trading and for better automation it became necessary to connect it with scales, for example, https://smartcode.ru/vesovoe_oborudovanie/vesy/sht...
The principle is this: we enter the product code into the scales, it transfers it to application (how?), in the application we find the name and cost and give it to the scales (how, in what format?), then it displays the price and prints a label with a barcode. We scan the barcode and enter the exact weight and cost into the order (here it is not clear how he encodes the weight into the barcode).
Perhaps someone has experience and can share it

Answer 1

Scales send a request to the server - with the item number, the server responds with what needs to be shown on the display, after weighing, the scales respond to the server weight - the server registers a new temporary item at a price calculated from the weight - generates a barcode and sends the result to print to the scales.
Scales are: keyboard, display, weight sensor, thermal printer. In most cases, these modules almost do not interact with each other - the server controls all interaction.
Read the documentation for the balance, perhaps the manufacturer provides free sample programs along with the source code.