ATOP TECHNOLOGIES: Industrial Connectivity for Legacy Integration | Partner
When industrial systems must evolve without abandoning proven assets, ATOP Technologies provides the rugged gateways, protocol intelligence, and certified connectivity that bridge legacy equipment into secure, modern industrial networks.
ATOP Technologies
Where Legacy Meets Modern Infrastructure
Connecting What Already Exists to What Must Come Next - Safely and Reliably
Industrial systems rarely start clean. ATOP Technologies specialises in connecting what already exists to what must come next - safely, reliably, and without operational disruption.
Across power, transport, utilities, and industrial automation, vast numbers of devices still operate using serial interfaces, legacy field protocols, and non-IP communications. These systems often remain operationally sound, yet isolated from modern networks and analytics. ATOP Technologies focuses precisely on this boundary. Their gateways, device servers, and protocol converters allow existing equipment to participate in modern Ethernet and IP-based architectures without requiring replacement.
This capability preserves asset value while enabling controlled, incremental modernisation. In Throughput architectures, ATOP frequently operates at the edge and field level, complementing deterministic transport provided by Westermo and higher-layer control integration enabled by ProSoft Technology. This layered approach ensures that legacy integration doesn't compromise overall system reliability or security.
Purpose-Built for Harsh Industrial Environments
Engineered for vibration, temperature extremes, and long service life in critical applications.
ATOP Technologies designs hardware for environments where vibration, temperature extremes, electrical noise, and long service life are non-negotiable requirements.
ATOP's industrial switches, gateways, and device servers are engineered specifically for harsh operating conditions. Wide temperature ranges, industrial power inputs, electrical isolation, and rugged mechanical design ensure reliable operation in substations, trackside cabinets, control rooms, and plant floors. These characteristics are validated through internationally recognised certifications, including IEC 61850-3 for power substations and EN 50155 / DNV-GL for railway environments.
This makes ATOP suitable for deployment in safety-critical and high-availability applications where failure is not tolerated. The result is connectivity hardware that aligns with the lifecycle expectations of critical infrastructure rather than commercial IT refresh cycles, ensuring that integration points don't become the weak link in otherwise durable systems.
Protocol Conversion as an Engineering Discipline
ATOP Technologies treats protocol conversion as a deterministic, security-aware function - not a best-effort translation layer.
Protocol incompatibility is one of the most persistent barriers to industrial integration. ATOP addresses this by providing gateways that understand industrial protocols at a functional level, enabling reliable conversion between serial, fieldbus, and Ethernet-based communications. Supported protocols include Modbus RTU/TCP, PROFIBUS, DNP3, IEC 60870, and IEC 61850, among others.
ATOP devices ensure that timing, data integrity, and command semantics are preserved during conversion - avoiding subtle failures that can destabilise operations. This capability becomes particularly powerful when integrated into architectures where ProSoft Technology manages controller-level interoperability and ATOP handles field-level protocol translation, creating a clean separation of responsibilities across the integration stack.
Secure Edge Connectivity for OT Environments
Connectivity at the edge must not compromise security. ATOP Technologies embeds OT-aware cybersecurity into its networking and gateway platforms.
ATOP incorporates cybersecurity features aligned with IEC 62443, including secure access controls, network segmentation capabilities, and hardened device behaviour. These measures ensure that legacy devices brought online do not become uncontrolled attack surfaces. Rather than attempting to replace higher-level security platforms, ATOP focuses on secure participation - ensuring that edge and legacy systems connect safely into segmented industrial networks.
When remote access is required, ATOP edge devices often operate behind Zero-Trust access layers delivered by Secomea, ensuring that legacy systems remain protected even when accessed remotely. This layered security approach provides defence-in-depth while enabling necessary connectivity for maintenance and monitoring.
Power, Rail, and Infrastructure Specialisation
ATOP's strongest deployments occur in sectors where certification, determinism, and lifecycle stability define acceptable technology.
| Vertical | Connectivity Challenge | ATOP Contribution | Ecosystem Synergy |
|---|---|---|---|
| Power & Energy | Legacy substation devices requiring IEC 61850 integration | IEC 61850-3 certified gateways and switches for digital substations | Works with Westermo OT networks for coherent grid modernisation |
| Rail & Transport | Trackside and onboard legacy systems with serial communications | Railway-certified switches and converters for EN 50155 compliance | Complements deterministic transport and train-to-ground communications |
| Smart Cities & Utilities | Distributed SCADA assets with ageing serial interfaces | Serial-to-IP integration for water, traffic, and municipal systems | Aligns with Secomea secure access for remote maintenance |
| Industrial Automation | Mixed device generations requiring field-level protocol translation | Protocol gateways and device servers for factory floor integration | Extends ProSoft Technology control integration capabilities |
Customisation Without Compromising Standards
ATOP Technologies balances customisation with certification - delivering tailored solutions without sacrificing compliance or reliability.
ATOP offers OEM and ODM capabilities, enabling custom hardware and firmware adaptations for specific industrial use cases. Importantly, this flexibility does not come at the expense of standards compliance or long-term supportability. For infrastructure operators and machine builders, this means solutions can be tailored to physical, electrical, or protocol-specific requirements while remaining aligned with international certifications and cybersecurity expectations.
This capability is especially valuable in niche or transitional environments where off-the-shelf products fall short. Whether adapting to unique form factors, adding specialised I/O, or implementing custom protocol variants, ATOP's customisation approach maintains the engineering discipline that defines their standard product lines.
A Global Manufacturer with Long-Term Focus
Embedded cybersecurity aligned with industrial standards for secure legacy integration.
ATOP's vertically integrated manufacturing model supports consistency, quality control, and long-term availability.
With over three decades of industrial networking experience, ATOP maintains in-house design and manufacturing capabilities, supported by a global network of R&D and regional offices. This structure enables tighter quality control and predictable product lifecycles. Their participation in the BlackBear TechHive ecosystem further strengthens their focus on OT cybersecurity and industrial resilience, reinforcing alignment with modern infrastructure requirements.
This long-term perspective ensures that ATOP products remain available and supportable throughout the extended lifecycles typical of critical infrastructure investments. For organisations planning modernisation projects that will take years to implement and decades to operate, this stability is a critical consideration.
The Throughput–ATOP Role: Integrating Legacy into Coherent Architectures
Throughput positions ATOP Technologies as the field-level integration layer within resilient, secure industrial architectures.
In Throughput designs, ATOP bridges the physical and protocol gap between legacy devices and modern OT networks. This enables clean architectural separation: legacy assets remain stable, modern systems evolve, and security boundaries are maintained. ATOP's role ensures that digital transformation does not strand existing infrastructure - or introduce hidden risk at the edge.
Throughput coordinates ATOP's capabilities with other partners to create comprehensive solutions: Westermo provides deterministic network transport, ProSoft Technology handles controller-level interoperability, and Secomea enables secure remote access. This integration ensures that legacy connectivity serves broader architectural objectives rather than creating isolated technical debt.
Modernisation fails when legacy systems are mishandled - ATOP Technologies reduces that risk through deterministic integration and certified design.
Throughput Technologies partners with ATOP Technologies because industrial modernisation must respect existing investments while enabling future capabilities. By providing reliable, secure connectivity for legacy and edge systems, ATOP allows infrastructure owners to modernise deliberately rather than reactively.
This approach preserves uptime, protects investment, and enables controlled evolution across decades-long asset lifecycles - ensuring that legacy integration strengthens rather than weakens industrial resilience.
Answered – Some Frequently Asked Questions
ATOP Technologies designs protocol conversion with industrial timing requirements as a fundamental consideration. Their gateways implement deterministic processing pipelines with predictable latency characteristics, support hardware-assisted timing for time-sensitive protocols, and maintain consistent performance under varying load conditions. This is achieved through custom ASICs in some models and carefully optimised firmware in others. For applications like protection relaying or safety systems where timing is critical, ATOP devices undergo extensive testing to verify deterministic behaviour under worst-case scenarios, ensuring that conversion doesn't introduce unpredictable delays that could compromise system operation.
ATOP's IEC 61850-3 certified products are engineered specifically for digital substation environments. They meet rigorous requirements for electromagnetic compatibility, electrical isolation, operating temperature range, and mean time between failures expected in high-voltage environments. Beyond basic certification, these products support the precise timing (IEEE 1588 PTP), redundancy protocols, and deterministic performance needed for protection and control applications. When combined with Westermo's IEC 61850 networking solutions, they form coherent digital substation architectures where both computing and networking elements are designed for the unique requirements of power grid applications.
ATOP maintains deep expertise in industrial protocol implementations, including common vendor-specific extensions and regional variants. Their engineering team understands the nuances of different protocol implementations and can often accommodate proprietary extensions through firmware customisation. For widely used variants, ATOP may include multiple protocol profiles in standard products. In cases where highly specialised or proprietary protocols are involved, ATOP's ODM capabilities allow development of custom firmware that preserves the exact semantics and timing characteristics required for proper operation. This flexibility is particularly valuable when integrating legacy systems where documentation may be incomplete or proprietary.
ATOP implements multiple layers of cybersecurity: secure boot processes prevent unauthorised firmware modification, role-based access control limits configuration changes to authorised personnel, and encrypted communications protect data in transit. Their devices support network segmentation through VLANs and firewall rules, preventing lateral movement in case of compromise. When deployed as part of Throughput architectures, ATOP edge devices typically operate behind additional security layers: Westermo switches provide network-level segmentation and intrusion detection, while Secomea gateways control remote access. This defence-in-depth approach ensures that even if one layer is compromised, others provide protection.
Throughput positions ATOP and ProSoft Technology as complementary layers in the integration stack. ATOP typically handles field-level protocol conversion for legacy serial devices and simple sensors, bringing them onto IP networks. ProSoft Technology then manages higher-level integration between different control platforms and complex systems. This separation creates clear architectural boundaries: ATOP operates at the edge where harsh environment tolerance is critical, while ProSoft Technology integrates at the control level where deep platform compatibility matters. Throughput coordinates these capabilities to ensure seamless data flow from legacy field devices through modern control systems without creating integration complexity or security gaps.