• Projects 30
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Budget: 27000 UAH Deadline: 10 days

We can start with engineering design - within 10 working days, we will prepare the architecture of the gateway, the exchange map with the PLC, firmware requirements, error handling, logging, updates, and the test stand plan. The price for this stage is 45,000 UAH.

Here is an important nuance - if further documentation is needed, as well as industrial firmware for a specific Siemens IoT gateway, then the final estimate should be calculated after clarifying the hardware, execution environment, and certification requirements. In theory, Modbus and BACnet seem simple, but in a technical environment, simplicity often ends at the first non-standard register =/

> Please specify the model of the Siemens gateway and PLC
> Is only the architecture project needed, or the complete firmware code with testing on the equipment

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  • Projects 9
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Budget: 5000 UAH Deadline: 15 days

I have experience working with Siemens PLCs, with microcontrollers, we need to discuss the task in detail.

  • Projects 11
  • Rating 5.0
  • Rating 1 788

Budget: 25000 UAH Deadline: 20 days

Good afternoon! We have experience working with industrial protocols Modbus and BACnet based on Siemens equipment. We implement gateway interaction with PLCs through optimized firmware, ensuring stable data collection and equipment control in the technical room. We are ready to start architectural design and implementation of data exchange logic.

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  • Rating 301

Budget: 15000 UAH Deadline: 14 days

Good day. The profile fits: firmware development for microcontrollers (STM32/ESP32, C/C++) and integration of hardware components, 3-4 years. Regarding the task — firmware for a gateway with direct interaction with PLC/equipment: ready to implement polling and control via Modbus (RTU/TCP) and BACnet, buffering and further data transmission. To assess accurately: what is the hardware platform of the gateway (ready module/SoC or does it need to be selected)? Which specific PLC/devices and protocols (Modbus RTU or TCP, BACnet MS/TP or IP)? Where is the data transmitted (cloud/local server, MQTT/HTTP)? After the answers, I will specify the exact terms and cost. Portfolio is in the profile.

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Budget: 27000 UAH Deadline: 35 days

We already have a nearly ready foundation for a similar industrial gateway, which can be very quickly adapted for Siemens, Modbus, and BACnet. We can discuss it here on the marketplace - I'm available (:
The estimate for the first working version is from 250,000 UAH and approximately 35 days, more precisely after the exchange scheme, list of registers, and gateway model.
We can design the firmware, protocol layer, exchange queue with the PLC, error logging, remote updates, and basic diagnostics.
If needed, we can add AI diagnostics based on telemetry - so the system not only reads the equipment but also helps find anomalies and causes of failures.
To start, we need the gateway model, development environment, list of Siemens PLCs, Modbus register map, and BACnet points, as well as a description of emergency scenarios and manual mode.
I will clarify two points.
- The gateway must operate completely autonomously in case of loss of connection with the server.
- Is only the firmware needed or also the server part, monitoring panel, and user roles?
Relevant examples.
- https://business.ingello.com/vorfahr - similar in terms of automation, integrations, and quick adaptation of a ready solution to business processes.

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