Scales lose connection. How to check the adapter and COM ports

This video explains how to restore weight data transfer from electronic scales to Torgsoft without involving a specialist. It covers the typical reasons why scales stop working: 

• a changed COM port, 

• an incorrect driver for the USB↔COM adapter, 

• Windows updates or connection problems.

It shows how to check the adapter (including CH340), find the correct COM port in Device Manager, and make sure that the port works without errors. It also explains how to choose the correct driver and roll back or lock its version to avoid failures after automatic Windows updates.

The video also includes a practical step-by-step process: from checking the cable and USB port to testing “raw” data through Putty and configuring the settings in Torgsoft. It explains how to correctly specify the COM port and communication speed so that the weight starts being transferred into the sales document.

This material is intended for business owners and cashiers who work with weighted goods and want to quickly restore equipment operation without cashier downtime. This helps avoid sales losses and reduce the number of support requests.

00:00 — Introduction

00:50 — CH340 adapter for scales

01:35 — Where to find the adapter driver

03:30 — How to choose the correct COM port 

05:00 — How to prevent adapter driver updates

08:30 — Summary

Scales do not transmit weight to Torgsoft