ABB HC800 (Symphony Plus HPC800) processor module
HC800 is a high-performance main control CPU module of ABB Symphony Plus (S+) DCS, belonging to the HPC800 controller core, responsible for executing control logic, loop operations, I/O management, and network communication. It is often used in conjunction with CP800 or as a high-end alternative.

1、 Model and positioning
Model: HC800 (complete model HC800K01)
System: ABB Symphony Plus (formerly INFI 90), HPC800 high-performance controller rack
Positioning: High end process control CPU, supporting large-scale I/O and complex algorithms, suitable for large-scale process industries such as power plants, chemicals, and oil and gas
Relationship with CP800: Belonging to the HPC800 series, HC800 has stronger performance and larger I/O capacity, while CP800 is a standard model
2、 Core hardware parameters
1. Computing power and storage
Processor: 32-bit Freescale ColdFire, 256MHz
RAM：64MB； NVRAM: 8MB (power on hold)
Flash: 4MB (firmware/program storage)
Function block: Supports 30000, 150+pre-defined control algorithms
Task cycle: 8 segmented tasks, with a minimum execution cycle of 1ms
2. Communication interface
Backboard: HPC800 high-speed bus (connected to PNI800/RFO810)
Factory network: PN800 Ethernet (10/100Mbps), connected to the upper computer
Remote I/O: RFO810 fiber FOXMAN-R network (up to 15km)
Protocol: Modbus TCP, PROFIBUS DP, HART, OPC UA
3. Electrical and Environmental
Power supply: 24VDC (19.2-30V), backplane power supply
Power consumption: Typical 10W
Temperature: 0 ℃~+70 ℃ (harsh industrial environment)
Size: 243.84 × 210.82 × 78.74mm, 0.88kg
Installation: Rack slot, hot swappable
3、 Key performance indicators
I/O capacity: Supports closed-loop control of 5000+I/O points, scanning can be completed within 250ms
Redundancy switching: 1:1 primary backup redundancy, switching time<100ms, interference free switching
Real time performance: millisecond level logical scanning, microsecond level timestamp, suitable for PID/interlocking
Scalability: Supports three types of I/O subsystems: SD/S800/Harmony Rack
4、 Core functions
Whole process control: PID regulation, sequential control, batch control, SOE event recording, alarm management
High reliability redundancy: Dual CPU real-time synchronization, millisecond level switching in case of failure, ensuring uninterrupted critical processes
Central management of the entire network: coordinating PN800 factory network, RFO810 remote fiber I/O, and whole station data labeling
Complex algorithm support: Advanced algorithms such as Model Predictive Control (MPC), Fuzzy Control, Adaptive Control, etc
Online maintenance: hot plugging, online configuration download, remote diagnosis, fault self check
5、 HC800 vs CP800 (core difference)
table
Comparison item HC800 (high-performance type) CP800 (standard type)
Processor 256MHz ColdFire 256MHz ColdFire
I/O capacity 5000+points 2000+points
30000 functional blocks and 15000 functional blocks
Redundant switching<100ms<1ms
Applicable scenarios include large/ultra large DCS, complex control small and medium-sized DCS, and conventional control
High to moderate price
6、 System configuration (your previous complete set of modules)
HC800: Main Control CPU (High end Brain)
PNI800: Ethernet upper computer communication
RFO810: Fiber optic remote I/O communication
TRICONEX 3009/3625: Independent SIS safety system, interlocked with HC800