ABB PM856A AC 800M Processor Unit

Article Number: 3BSE066490R1
Model: PM856AK01
Type: Processor Unit for Industrial Automation Systems

General Information

• Redundancy: No

• High Integrity: No

• Clock Frequency: 24 MHz

• Performance:

• 1000 Boolean Operations: 0.46 ms

• Total Execution Time: 0.46 ms

• Memory:

• Total Memory: 16 MB (from 800xA 5.1 FP4)

• RAM Available for Application: 10.337 MB (from 800xA 5.1 FP4)

• Flash Memory for Storage: Yes

Hardware Overview

The PM856AK01 CPU board is equipped with:

• Microprocessor

• RAM memory

• Real-time clock

• LED status indicators

• INIT push button

• CompactFlash card interface

Communication Interfaces

Located on the base plate of the controller:

• 2 Ethernet Ports (RJ45) – CN1 and CN2

• For connection to the Control Network

• 2 Serial Ports (RJ45) – COM3 and COM4

• COM3: RS-232C with modem control signals

• COM4: Isolated port for configuration tool connection

Installation & Mechanical Features

• DIN rail mounting using a unique slide & lock mechanism

• Each base plate comes with a unique MAC address for Ethernet identification

• Label located on the TP830 base plate

• IP20 protection class – no need for additional enclosure

Features & Benefits

• High reliability and easy fault diagnostics

• Modular architecture allows for scalable, step-by-step expansion

• Can be configured using ABB 800xA Control Builder

• Full EMC certification for industrial environments

• Built with standardized communication interfaces for optimal connectivity (e.g., Ethernet, PROFIBUS DP)