ABB PM864AK01 Processor Unit

Data Sheet

General Information

  • Product ID:
  • ABB Type Designation:
  • Catalog Description:
    PM864AK01 Processor Unit


  • Number of Processors:
  • CPU Clock Frequency:
    96 MHz
  • Memory Size:
    32 MB
  • Technical Information:
    96MHz and 32MB.
    Package including:
    – PM864A, CPU
    – TP830, Baseplate
    – TB850, CEX-bus terminator
    – TB807, ModuleBus terminator
    – TB852, RCU-Link terminator
    – Battery for memory backup (4943013-6)
    – No license included
    Include the following text: Note! This part is not RoHS 2 2011/65/EU
    compliant. This is a spare part for systems placed on the market before
    July 22, 2017 and may only be ordered for repair, reuse, updating of
    functionalities or upgrading of capacity.
    For new installations, please order PM866AK01 instead.


  • Product Net Weight:
    1.2 kg


  • Country of Origin:
    Sweden (SE)
  • Customs Tariff Number:

We focus on industrial automation and process instrument over 20 years

ABB PM864AK01 Processor Unit

The CPU board contains the microprocessor and RAM memory, a real-time clock, LED
indicators, INIT push button, and a CompactFlash interface.

The base plate of the PM864A controller has two RJ45 Ethernet ports (CN1, CN2) for connection to the Control Network, and two RJ45 serial ports (COM3, COM4). One of the serial ports (COM3) is an RS-232C port with modem control signals, whereas the other port (COM4) is isolated and used for the connection of a configuration tool. The controller supports CPU redundancy for higher availability (CPU, CEX-Bus, communication interfaces and S800 I/O).

Simple DIN rail attachment / detachment procedures, using the unique slide & lock mechanism. All base plates are provided with a unique Ethernet address which provides every CPU with a hardware identity. The address can be found on the Ethernet address label attached to the TP830 base plate.

General info
Article number3BSE018161R1 (PM864AK01)
High IntegrityNo
Clock Frequency96 MHz
Performance, 1000 boolean operations0.15 ms
Performance0.15 ms
Memory32 MB
RAM available for application23.522 MB
Flash memory for storageYes
Height196 mm (7.3 in)
Width119 mm (4.7 in.)
Depth135 mm (5.3 in.)
Weight1200 g (2.6 lbs)
Detailed data
Processor typeMPC862
Switch over time in red. conf.max 10 ms
No. of applications per controller32
No. of programs per application64
No. of diagrams per application128
No. of tasks per controller32
Number of different cycle times32
Cycle time per application programsDown to 1 ms
Flash PROM for firmware storage2 MB
Power supply24 V DC (19.2-30 V DC)
Power consumption +24 V typ/max287/487 mA
Power dissipation typ.6.9 W (11.4 W max)
Redundant power supply status inputYes
Built-in back-up batteryLithium, 3.6 V
Real-time clock stability100 ppm (approx. 1 h/year)
Clock synchronization1 ms between AC 800M controllers by CNCP protocol
Event queue in controller per OPC clientUp to 3000 events
AC 800M transm. speed to OPC server36-86 events/sec ,113-143 data messages/sec
Comm. modules on CEX bus12
Supply current on CEX busMax 2.4 A
I/O clusters on Modulebus with non-red. CPU1 electrical + 7 optical
I/O clusters on Modulebus with red. CPU0 eletrical + 7 optical
I/O capacity on ModulebusMax 96 (single PM864A) or 84 (red. PM864A) I/O modules
Modulebus scan rate0 – 100 ms (actual time depending on number of I/O modules)
Supply current on Electrical Modulebus24 V : max 1.0 A
5 V : max 1.5 A
Ethernet channels2
Ethernet interfaceEthernet (IEEE 802.3), 10 Mbit/s, RJ-45, female (8-pole)
Control Network protocolMMS (Manufacturing Message Service) and IAC (Inter Application Communication)
Recommended Control Network backbone100 Mbit/s switched Ethernet
RS-232C interface2 (one general, 1 for service tool)
RS-232C interface (COM3) (non red. only)75-19 200 baud, RJ-45 female (8-pole), not opto isolated, full RTS-CTS support Not
RS-232C interface (COM4) (non red. only)9 600 baud, RJ-45 female (8-pole), opto isolated, no RTS-CTS support