Software of the Pick-to-Light system

Our software of the Pick-to-Light system takes over the complete control of the compartment displays, the process and the interface to the superior system. It is designed differently for picking, assembly activity and production support. In order to fulfill all these tasks, our program is very modular and professional.

Structure of the software

The LUCA server software is the basis of our systems. It controls the entire data communication between the individual modules, interfaces and processes. The application software was completely developed in the fast programming language C++ and is platform independent. Currently, versions are available for Microsoft Windows and Linux operating systems, although the Windows versions are used much more often. The required computer (PC or server) is often provided on-site. Learn more details in the article: LUCA-Server.

Software module for controlling the Pick-to-Light compartment displays

The software module for direct control of the hardware of the Pick-to-Light compartment displays has the following tasks:

  • Communication with the network-compatible Pick-to-Light controllers.
  • Management of the physical and logical addresses of the Pick-to-Light compartment displays.
  • Management of logical zones, mechanisms of quantity corrections and feedback of keystrokes.
  • Maintenance and diagnostic functions of all plant components in real time.
  • Plant configurations and assignment of logical addresses to physical components.

What is the physical and the logical address in the Pick-to-Light software?

Each compartment display has a globally unique physical address. The controller can address the compartment displays via this address. It consists of a four-digit combination of numbers and letters (e.g. s5Gu or hbF8).

To enable simple designation of each compartment display (e.g. as a storage location), a logical address is stored in the system software for the physical address, which must also be unique. The logical address can then very easily be used directly in the Pick-to-Light system structure by the higher-level warehouse management and ERP system.

Programs for flow processes

The compartment displays are configured and ready for use using only the application software module described above for controlling the Pick-to-Light components. However, they do not light up. To do this, a process must be integrated into the computer program. There are several possibilities for this:

  • The warehouse management software controls the entire process itself and completely replicates the entire logic.
  • Our standard process is used to control the functions (for more information see: Standard process in a Pick-to-Light system).
  • We develop a software module for the process flow according to your requirements.

Depending on the data processing, we support the following methods in the flow processes of the applications.

Single-Order Picking

This is also our standard process. Here, only one order is processed at a time. After activating the application software, the appropriate compartment displays light up and the picker acknowledges the removals at an acknowledgement button. Various extensions are available for activating the orders. Read more about single-order picking for Pick-to-Light in a separate article.


In the system software, several orders are managed at the same time and the employee, depending on the type of construction, is guided specifically in picking. For the complex control, the computer program is usually developed by us. Learn more in the article: Multi-Order-Picking with Pick-to-Light.

Multi-User Picking

Several pickers can also work simultaneously in one picking zone. We will show you how this works in the article: Multi-User Picking with Pick-to-Light.

Software interface

To process the order data, the Pick-to-Light system needs an interface to the higher-level system. There are standard interfaces and customized interfaces, which we describe in separate articles. Simple files with the pick lists is the simplest solution. We provide special documentation for each system. The software interface is independent of the operating system.

Many years of experience in paperless order picking