Why choose AC500 High Performance PLCs
Machine builders and automation teams face increasing demands: more data, higher speed, tighter safety requirements, and the need to integrate motion and connectivity — without adding complexity.
PM5685 is designed to meet those demands with a high-performance multi-core controller that delivers more capability in one platform while preserving the advantages of the AC500 platform.
Key outcomes:
- Faster response times and processing capacity for future expansions
- Simplified architectures by consolidating functions in one CPU
- Scalable platform built for modern connectivity and machine integration.
Introducing the AC500 PM5685 High Performance PLC
<p>More within one CPU, modern connectivity, and full AC500 compatibility, built to power demanding automation with confidence.</p>
"Multi-core performance without redesign."
High-performance scalability within the AC500 platform, supporting automation solutions from compact machines to high-end systems, without changing footprint, hardware, or engineering approach.
“Built for connectivity. Designed for cybersecurity.”
Cybersecurity aligned with IEC 62443 principles, enabling secure, connected automation while protecting machines, systems, and data across the lifecycle.
“Motion control and automation, perfectly coordinated.”
High-speed, coordinated multi-axis motion running in parallel with standard PLC automation, delivering more within one CPU and simpler machine architectures.
“Connectivity and performance to drive data from floor to cloud”
High-performance control combined with open, supported connectivity to reliably move data from the shop floor to higher-level systems and the cloud.
“Ready for complex Machine safety demand.”
Integrated machine safety architecture supporting advanced safety concepts up to SIL 3 / PL e, without separating safety from performance and connectivity.
AC500 PM5685 PLC for demanding machines
- High performance, multi-core processing
Delivers faster scan times and performance margin for complex, data-intensive automation. - More within one CPU
A unified platform approach combining core capabilities: connectivity, motion control, and machine-safety-ready architecture. - Modern connectivity for digitalized machines
Designed for integrated communications and Industry 4.0-ready automation architectures. - Seamless upgrade and retrofit path within AC500
Fully compatible with the AC500 range, enabling reuse of existing engineering, I/O, and system design for upgrades and retrofits. - Platform-ready Cyber security and compliance alignment
Consistent with AC500 platform standards, including the Cyber security approach and certification/compliance readiness.
100% AC500 platform compatible
PM5685 fits seamlessly into the AC500 platform, giving you a proven, scalable automation foundation from compact machines and small applications to high-end systems.
It supports continuity in engineering practices and hardware design, plus an easier path to upgrades, retrofits, and expansion.
“Built to keep your operations running.”
Designed for data-intensive, highly connected automation where uptime and operational stability are critical, supporting confident, continuous operation.
“Performance that scales with your system.”
Gives additional capacity to accommodate expanding system scope, higher data loads, and increased integration, helping systems evolve with confidence.
“Supporting reliability as complexity grows.”
Provides a solid control foundation for increasingly connected and complex automation systems, helping manage growth without unnecessary redesign.
High performance PLC features for modern and future automation
<p>Faster response times and more headroom for complex programs. Be able to run more functions in one CPU as Motion Control + Machine Safety + Connectivity. Reduce footprint and complexity with a future-ready architecture</p>
PM5685 is built for modern machine and system connectivity.
Supporting seamless integration into connected automation architectures while staying aligned with the AC500 platform approach.
Designed for connected machines and distributed automation systems
Supports integration across control, visualization, drives, and higher-level systems
Enables streamlined machine networking and system expansion within the AC500 range
Connected automation needs a controller platform that supports secure design principles.
PM5685 follows the AC500 platform approach to Cyber security and supports certification/compliance readiness for industrial delivery.
- Cyber security alignment for connected automation environments
- Supports structured deployment in networks requiring security expectations
- Helps reduce risk in modernization projects with increased connectivity
- Designed to support secure automation architectures in accordance with IEC 62443 principles.
PM5685 supports safety-ready system concepts within the AC500 platform.
Enabling architectures that combine standard automation and safety needs with consistent engineering.
- Supports machine safety concepts within the AC500 platform approach up to SIL 3 or PL e
- Allows floating-point and trigonometric safety calculations for complex safety-related tasks.
- Provides Structured Text alongside Function Block programming to simplify advanced safety programming
- Enables advanced safety architectures for machines with higher safety requirements
- Helps standardize safety-related engineering and system design practices
PM5685 brings high-performance multi-core processing to the AC500 portfolio.
Delivering the responsiveness needed for complex applications, high data volumes, and demanding machine control.
Multi-core performance for complex logic and data-heavy control
Faster response and capacity for future expansion
Designed for demanding automation tasks without adding system complexity
Motion Control
For machines where speed and coordination matter, PM5685 provides the responsiveness needed to support high-speed sequences and multi-axis control concepts within the AC500 platform.
Responsiveness for high-speed machine sequences
Supports precise coordination and responsive control for Motion Control applications
- Enables scalable Motion Control architectures as machine requirements grow
- Combine standard PLC automation and Motion Control in one controller platform
PM5685 is designed to support stable operation in demanding industrial environments.
Building on the proven AC500 platform approach for long-term machine and system use.
Built for continuous operation and industrial requirements
Helps maintain consistent control performance as systems scale
Supported by ABB’s AC500 platform lifecycle approach and global support
Scalability & modularity
PM5685 fits into the modular AC500 approach.
Supporting scalable system design from compact machines to larger, distributed installations using AC500 and AC500-eCo hardware concepts.
Scale architectures from compact to high-performance systems
Reuse AC500 hardware concepts and expand with modular building blocks
- Supports system continuity for upgrades, variants, and retrofits
- Automation Builder compatible, reuse software and engineering workflows across AC500 systems
Target applications
<p>PM5685 is designed for automation applications that require high performance, advanced connectivity, and scalable system architectures. It is well suited for applications where large I/O counts, secure connectivity, precise and coordinated motion control, and reliable operation are essential.</p>