Key Features & Benefits
Superior Processing Power
800MHz dual-core processor
1GB RAM with error correction
16MB flash memory for application storage
Enhanced Reliability
99.999% availability in redundant configurations
Built-in watchdog timer
Hot-swappable design for maintenance
Comprehensive Connectivity
Dual Ethernet ports (10/100/1000 Mbps)
Serial communication ports (RS-232/RS-485)
USB 2.0 configuration port
Advanced Control Capabilities
1ms control cycle execution
Supports all IEC 61131-3 programming languages
Integrated motion control functionality
Technical Specifications
Parameter Specification
Processor 800MHz dual-core
Memory 1GB RAM, 16MB Flash
Communication 2x Ethernet, 2x Serial, 1x USB
Power Consumption 12W typical
Operating Temp -40°C to +70°C
Certifications UL, CE, ATEX, IEC 61508 SIL2
Typical Applications
✔ Oil & gas processing plants
✔ Power generation facilities
✔ Chemical production
✔ Pharmaceutical manufacturing
✔ Water treatment systems
The ABB PM856A is a powerful process automation controller from ABB's AC 800M family, designed for mission-critical industrial applications. This advanced controller delivers exceptional reliability and performance for complex control tasks in demanding environments.