ABB PM856AK01 3BSE066490R1 Processor Unit

Hardware Composition

Performance Parameters

• Processor: 24MHz clock frequency, executing 1,000 Boolean operations in 0.46ms.

• Memory: Total 16MB, including 10.337MB RAM (from 800xA 5.1 FP4) and 2MB flash for firmware storage.

• Power Supply: 24V DC (19.2–30V DC range). Typical power consumption: 180mA (4.32W); maximum: 300mA (7.2W). Built-in 3.6V lithium battery for data retention during power outages.

Communication Interfaces

• Ethernet Ports: Compliant with IEEE 802.3, 10Mbit/s, RJ-45 female (8-pin), supporting MMS (Manufacturing Message Service) and IAC (Inter-Application Communication) protocols.

• RS-232C Ports: 2 ports, 1 general-purpose and 1 for maintenance tools.

Buses

• CEX Bus: Supports 12 single CEX bus modules with a maximum power supply current of 2.4A.

• ModuleBus: Up to 96 I/O modules, scan rate 0–100ms (actual time depends on the number of I/O modules).

Dimensions and Weight

• Width: 119mm (4.7in), Height: 186mm (7.3in), Depth: 135mm (5.3in).

• Weight: 1100g (2.4lbs) including the base.

Functional Features

• Task Processing Capability:

• 32 applications per controller, 64 programs per application, 128 charts per application.

• 32 tasks per controller, cycle time as low as 1ms per application.

• Communication Function: The Ethernet interface automatically manages communication establishment and periodic data transmission. Parameters in the command block can set transmission frequency, direction, and memory locations in clients/servers.

I/O Characteristics

• Diverse Communication Interfaces:

• Non-redundant: 1 electrical + 7 fiber optic I/O clusters; redundant: 0 electrical + 7 fiber optic clusters.

• I/O capacity: 96 modules (single CPU), 84 modules (redundant), allowing flexible configuration for precise field device control and data acquisition.

• COM3: RS-232C with modem signals, non-isolated, baud rate 75–19200bps.

• COM4: Isolated, 9600bps, for connecting specific devices or configuration/debugging.

• Ethernet Ports: 2 RJ45 ports (IEEE 802.3, 10Mbit/s), supporting MMS and IAC for network communication, data interaction, and remote control in industrial automation networks.

• Serial Ports: 2 RJ45 ports:

• CEX Bus: Supports 12 communication modules (max. 2.4A power supply current), enabling system expansion (e.g., I/O and communication modules) for complex control tasks.

• ModuleBus:

• Large I/O Capacity: Up to 96 I/O modules (single CPU) for large-scale industrial automation systems, connecting sensors, actuators, etc., to collect and control massive field signals.

• Adjustable Scan Rate: 0–100ms (dependent on I/O module count), adaptable to real-time requirements. For high-realtime scenarios, reducing I/O modules enhances scan rate for rapid field signal response.

Application Fields

• Production Line Automation: Improves efficiency in various manufacturing lines.

• Power Systems: Enables remote monitoring and intelligent control for stable power supply.

• Chemical Production: Achieves precise process control to ensure product quality and safety.

• Water Treatment: Enhances automation for efficient water quality processing.

• Other Industries: Widely used in petroleum, metallurgy, etc., meeting complex industrial automation needs.