Labelling Machine DHCP IP Assignment for Data Reliability
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Solution Overview
Problem
Existing labelling machines face challenges in ensuring the reliable transmission of security-relevant and time-critical data between labelling apparatuses and machine control systems due to unreliable IP address assignment, which can lead to operator safety risks.
Innovation Solution
A labelling machine with a machine control system and a DHCP server connected via a manageable Ethernet network switch, assigning preset IP addresses to labelling apparatuses, and using distinct identifiers and physical markings to prevent confusion between docking stations, ensuring secure and accurate data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a labelling apparatus is connected to a docking station with a network access for data transmission, then data communication between the labelling apparatus and machine control system is enabled, but unreliable IP address assignment may cause incorrect data transmission to the wrong labelling apparatus
Solution Approach 1:
A DHCP server is introduced as an intermediary component between the network access and the labelling apparatuses. The DHCP server automatically assigns IP addresses to docking stations based on their MAC addresses, eliminating the need for manual IP configuration and preventing IP address conflicts. This intermediary ensures that data is transmitted to the correct labelling apparatus reliably without increasing overall system complexity.
Solution Approach 2:
The system enables self-service through automatic IP address assignment. When a labelling apparatus is connected to a docking station, the DHCP server automatically detects the connection and assigns an appropriate IP address without requiring manual intervention from operators. This self-configuration process ensures reliable data transmission while keeping the system simple to operate.
2Ease of operation
If manual IP address assignment is used for labelling apparatuses, then network configuration is simple, but IP address assignment errors can occur leading to safety risks
Solution Approach 1:
The DHCP server enables the network configuration to service itself by automatically assigning IP addresses to docking stations and labelling apparatuses. This eliminates manual IP address configuration, preventing human errors while maintaining ease of operation. Operators simply need to connect the labelling apparatus to the docking station, and the system handles the rest automatically.
Solution Approach 2:
The DHCP server implements a feedback mechanism where it receives requests from docking stations for IP address assignment and responds with appropriate addresses based on pre-configured rules and MAC address matching. This automated feedback loop ensures that IP addresses are assigned correctly and consistently, preventing safety risks associated with manual configuration errors.
3Device complexity
If multiple docking stations share the same network segment, then network infrastructure is simplified, but confusion between docking stations may lead to incorrect data routing
Solution Approach 1:
The DHCP server implements local quality by assigning unique IP addresses to each docking station based on their individual MAC addresses. This ensures that even though multiple docking stations share the same physical network infrastructure, each station has a unique network identity. Data routing is therefore accurate and free from confusion, while the network infrastructure remains simple and shared.
Data Source
AI summary
Labelling machine for labelling containers, having at least one docking station for a labelling apparatus and a machine control system, wherein the docking station comprises at least one network access for establishing a network connection between the machine control system and a docked labelling apparatus, wherein the network connection is designed to transmit security-relevant data and/or time-critical data, and wherein the network access is connected to a manageable Ethernet network switch of the machine control system with a DHCP server, wherein the DHCP server is adapted to assign a preset IP address determined by the DHCP server to a labelling apparatus connected to the network access.