1. Application-Server,

2. IoT-Gateway,

3. Program Logic Controller (PLC).

4. Sensors and valves

PLC and IoT-Gateway are located in a factory.

PLC controls technological process (i.e. temperature in coolers with beer), IoT-Gateway is "proxy" between PLC and Application-Server

is analog of web-SCADA. It provides web-interface for operators.

connets to PLC via ModbusTCP. Sends alarms via Telegram.

contols the technological process.

• use vue.js

• make html-template

• use PostgreSQL and time series for trends

• use local copy of css bootstrap

• use database for telegram clients

• jinja for telegram messages

• change modbus library. Use mock

• refactor IoT-Gateway

• use json config file for ip, token etc

• use MQTT, RabbitMQ..