General information
Model: 3BSE076939R1 (PM866AK01)
Brand :ABB
Category: AC 800M controller
Redundancy: No
High integrity: No
Clock frequency: 133 MHZ
Performance, 0.09 milliseconds for 1000 Boolean operations
Performance: 0.09 milliseconds
Memory: 64 MB
Available RAM for the application: 51.389 MB
Flash for storage: Yes

Width 119 mm (4.7 in)
Height 186 mm (7.3 in)
Depth 135 mm (5.3 in)
Weight (including base) 1200 g (2.6 lb)

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

The baseplate of the PM866 / PM866A controller has two RJ45 Ethernet ports (CN1, CN2) for connecting to the control network, and two RJ45 serial ports (COM3, COM4). One of the serial ports (COM3) is the RS-232C port with the modem control signal, while the other port (COM4) is isolated and used to connect to the configuration tool. The controller supports CPU redundancy for higher availability (CPU, CEX bus, communication interface, and S800 I/O).

Detailed data
Processor type MPC866
The switching time is shown in red. conf. Max. 10 ms
Number of applications per controller thirty-two
Number of programs per application 64
Number of charts per application 128
Thirty-two tasks per controller
Different cycles 32 times
Cycle times for each application are as low as 1 millisecond
Flash PROM 4 megabytes for firmware storage
Power Supply 24 volts DC (19.2-30 volts DC)
Power consumption +24 V Typical value/Max 210/360 MA
Power dissipation 5.1 watts (Max. 8.6 Watts)
Redundant power status input Yes
Built-in spare battery lithium battery, 3.6V
Clock synchronization Using CNCP, the interval between AC 800M controllers is 1 millisecond
The event queue in the controller of each OPC client is up to 3000 events
AC 800M transfer speed to OPC server 36-86 events/SEC, 113-143 data messages/SEC
Communication module 12 on the CEX bus
The maximum supply current on the CEX bus is 2.4A
The I/O cluster on the Modulebus is not red. CPU 1 Electrical + 7 optical
The I/O cluster on the Modulebus is red. CPU 0 Electrical + 7 optical
The I/O capacity of the Modulebus is up to 96 (single PM866) or 84 (red PM866) I/O modules
Module bus scan rate 0-100 ms (actual time depends on number of I/O modules)
The supply current on the bus of the electrical module is 24 volts: maximum 1.0 AMps
5 volts: 1.5 amps Max
Ethernet channel 2
Ethernet interface Ethernet (IEEE 802.3), 10 Mbit/s, RJ-45, female (8 poles)
Control network protocols MMS (Manufacturing Messaging Service) and IAC (Inter-Application Communication)
100 Mbit/s switching Ethernet is recommended for the backbone of the control network
Real-time clock stability 100 ppm (about 1 hour/year)
RS-232C interface 2 (one for general purpose, one for service tools)
RS-232C Interface (COM3) (non-red) RS-232C, 75-19 200 baud, RJ-45 female (8 pole), non-optically isolated, fully supports RTS-CTS
RS-232C interface (COM4) (non-red) RS-232C, 9 600 baud, RJ-45 female (8 pole), optically isolated, not RTS-CTS supported