Low-Code/No-Code for Legacy Conveyor System Integration

Many European distribution centers operate with reliable but dated conveyor hardware. While mechanically sound, these legacy systems often lack the digital connectivity to function in a modern, automated ecosystem. Replacing them entirely is prohibitively expensive. This is where low-code and no-code platforms are creating a paradigm shift, offering a cost-effective, agile solution to breathe new life into existing infrastructure.

Definition

Low-code/no-code integration is the use of software platforms that allow users to connect systems, build applications, and automate processes using graphical user interfaces and pre-built modules instead of traditional, line-by-line programming. In logistics, this approach enables warehouse staff to link older PLC-controlled conveyors to a central WES or WMS with minimal custom coding.

Key Numbers

The Core Challenge: Bridging the Digital Gap

Legacy conveyor systems, particularly those installed before 2010, are often controlled by isolated Programmable Logic Controllers (PLCs). These controllers are robust but speak outdated or proprietary protocols. They weren't designed to communicate with modern, API-driven Warehouse Execution Systems (WES) or Warehouse Management Systems (WMS). This creates a digital silo. The conveyor moves boxes, but the central brain of the warehouse has no visibility or control, leading to inefficiencies, manual workarounds, and an inability to implement dynamic strategies like zone routing.

Traditional Integration: Slow and Expensive

The conventional method to solve this involves a significant software engineering effort:

1. Hiring specialists: PLC programmers and software developers who understand both the low-level industrial protocols and modern IT architectures are scarce and expensive.
2. Custom Middleware: Developing a custom software bridge to translate PLC data for the WMS. This is a months-long project involving extensive coding, testing, and debugging.
3. Rigidity: Once built, this custom middleware is inflexible. Any change in operational logic—like adding a new divert or changing a sorting rule—requires another round of development.

This high cost and rigidity often lead businesses to delay modernization, causing their processes to stagnate even as the company grows. As we've seen with many clients, business growth is not always matched by process evolution, creating significant operational bottlenecks.

How Low-Code Platforms Provide the Solution

Low-code platforms act as a universal translator and a visual workflow builder. They are specifically designed to connect disparate systems through a concept known as "connectors" or "adapters."

Key Features for Conveyor Integration

• Pre-built Connectors: These platforms come with libraries of connectors for hundreds of industrial and IT systems. This includes connectors for PLCs (e.g., Siemens S7, Allen-Bradley), communication standards like OPC UA, and modern REST/SOAP APIs used by WMS/WES.
• Visual Workflow Engine: Instead of writing code, an operations manager can drag and drop logical blocks to define a process. For example: "WHEN `Sensor_A` on `Conveyor_1` turns TRUE, THEN call `WMS_API` to get destination, IF destination is `Packing_Zone_B`, THEN activate `Diverter_3`."
• Data Transformation: They provide tools to easily map and transform data. A simple binary signal from a PLC (0/1) can be transformed into a meaningful JSON message (e.g., `{"status": "box_present"}`) for the WMS.

A Practical European Example

Consider a 15-year-old roller conveyor system in a German automotive parts warehouse. The system uses Siemens S5 PLCs. The goal is to integrate it with a new cloud-based WES to enable dynamic routing based on real-time orders. Using a low-code platform, the integration specialist can select the "Siemens S5" connector and the "REST API" connector. They visually map the PLC memory addresses (e.g., sensor inputs, motor outputs) to API calls, transforming the raw data into a format the WES understands. The entire logic can be built and tested in less than a week, for a cost under €20,000, versus a 3-month, €100,000+ custom project.

Comparing Integration Approaches

The difference between traditional custom coding and a low-code approach is stark, particularly for small to medium-sized enterprises (SMEs) where budget and IT resources are limited.

Extending Asset Life and Boosting ROI

By wrapping a digital, flexible layer around mechanically sound hardware, low-code platforms directly extend the useful life of legacy conveyors. A system that might have been destined for a multi-million Euro replacement can now function effectively for another 5-10 years. This significantly alters the ROI calculation. Instead of a massive capital expenditure (CAPEX) on new hardware, the investment becomes a much smaller operating expense (OPEX) for the low-code platform subscription and a small integration project cost. This makes modernization accessible and financially viable, enabling warehouses to benefit from intelligent automation without breaking the bank. For a deeper dive into optimizing warehouse software layers, our WMS, WCS, and WES Integration Guide provides a comprehensive overview.

Positioning as a Trusted Partner: Easy Systems

At Easy Systems, we understand that warehouse automation is not just about installing new hardware; it's about intelligent integration and process optimization. While we engineer state-of-the-art modular conveyor systems, we recognize the reality of mixed-hardware environments. Our philosophy is pragmatic: leverage what works and upgrade what doesn't. We can act as your strategic partner in identifying which parts of your legacy system are worth preserving. By integrating our modern, modular conveyors with your existing assets—potentially using low-code strategies for connectivity—we create a cohesive, future-proof ecosystem. This hybrid approach, combining the best of old and new, ensures you achieve maximum ROI and operational agility without the unnecessary expense of a complete overhaul. Trust Easy Systems to design a solution that respects your budget and grows with your business.