ABBAC 800M and Communication interfaces Compact Product Suite Outline of all modules

AC 800M is a family of rail-mounted modules, consisting of CPUs, communication 

modules, power supply modules and various accessories. There are several CPU modules 

to choose from, ranging from medium processor power and low cost to high processor 

power and support for full redundancy

For updated information regarding AC 800M hardware please 

visit our Hardware Selector. In the selector you can compare 

different communication modules, S800 IO modules, module 

termination units, AC 800M controllers, power supplies, voters, 

panels and also print your own pdf files.

www.compacthardwareselector.com

Features / CPUs PM851A PM856A PM858 PM860A PM861A (Classic)

Article number 3BSE066485R1

(PM851AK01)

3BSE066490R1 

(PM856A)

3BSE082895R1 

(PM858K01)

3BSE082896R1 

(PM858K02)

3BSE066495R1 

(PM860AK01)

3BSE018157R1

(PM861K01)

3BSE018160R1

(PM861K02)

Processor Unit PM851AK01 incl:

1 PM851A CPU and 

required optional 

items.

PM856AK01 incl:

1 PM856A CPU and 

required optional 

items.

PM858K01 incl:

1 PM858 CPU and 

required optional items. 

PM858K02 incl:

2 PM858K01

PM860AK01 incl:

1 PM860A CPU and 

required optional 

items.

PM861AK01 incl:

1 PM861A CPU and

required optional items

PM861AK02 incl:

2 PM861AK01

Optional items 

(partly included in Processor 

Units, see Price List)

TP830 Baseplate, TP850 CEX-bus term., TK850 CEX-bus cable, TB807, Modulebus term, Battery RAM backup, TB852/

TB853 RCU-link term, TB851/TB855/TB856 RCU-link cable, SB822 External Battery Unit, TK212A Tool cable, TC562 Short 

Distance Modem, TK853V020 Modem cable, BC810K02, BC820K02, CEX-bus Interconnection unit; TK851V010 Connection 

cable, SD831/SD832/SD833/SD853/SD854 Power Supply, SS832 Voting Unit, Mains Breaker Kit.

Clock frequency 24 MHz 24 MHz 33 MHz 48 MHz 48 MHz

Memory (RAM) 8 MB 8 MB 16MB 8 MB 16 MB

From 5.1 FP4 12 MB 16 MB 16 MB

RAM available for application 2.282 MB 2.282 MB 7.147 MB 2.282 MB 7.155 MB

From 5.1 FP4 6.253 MB 10.337 MB 10.346 MB

Processor type MPC860 MPC860 MPC866 MPC860 MPC860

Flash memory for storage 

of application and data

Yes Yes Yes Yes Yes

CPU redundancy support No No Yes No Yes

Features / CPUs PM851A PM856A PM858 PM860A PM861A (Classic)

Switch over time in red. conf. - - Max 10 ms - Max 10 ms

Performance, 1000 boolean 

operations (a:=b and c)

0.46 ms 0.46 ms 0.36 ms 0.23 ms -

No. controllers per control projects 32

No. of applications per control 

project

1024

No. of applications per controller 32

No. of programs per application 64

No. of tasks per controller 32

Number of different cycle times 32

Cycle time per application

programs

Down to 1 ms

Flash PROM for firmware storage 2 MB 2 MB 4 MB 2 MB 2 MB

Power supply 24 V DC (19.2-30 V DC) max 5 % ripple acc. to IEC 61131-2

Power consumption +24 V 

(typ/max)

180/300 mA 180/300 mA 210/360 mA 180/300 mA 250/430 mA

Power dissipation typ. 4.32 W 4.32 W 5.1 W 4.32 W 6.0 W

Power Reservoir Internal 5 ms power reservoir, sufficient for the CPU to make a controlled power down

Power supply connector Detachable 4-pole screw terminal block

Redundant power supply

status inputs

Yes: 2 inputs designated SA, SB (Max 30 V, high level >15 V, low level < 8 V)

Built-in back-up battery Type: Lithium, 3.6 V, 0.95 Ah, size 1/2 AA, 0.3 g Lithium content

Real-time clock stability 100 ppm (approx. 1 h/year)

Clock synchronization 1 ms between AC 800M controllers by CNCP protocol

Comm. modules on CEX bus 1 12 12 12 12

Supply current on CEX bus Supply current: Max 24 V - 2.4 A (fuse 3.15 A fast, PM891 has an embedded auto fuse)

I/O clusters on Modulebus with 

non-redundant CPU

1 el. + 1 opt. 1 el. + 7 opt. 1 el. + 7 opt. 1 el. + 7 opt. 1 el. + 7 opt.

I/O clusters on Modulebus with 

redundant CPU

NA NA 0 el. + 7 opt. NA 0 el. + 7 opt.

I/O capacity on Modulebus with 

non-redundant/redundant CPU

Max 24/NA I/O 

modules

Max 96/NA I/O 

modules

Max 96/84 I/O 

modules

Max 96/NA I/O 

modules

Max 96/84 I/O 

modules

Modulebus scan rate 0 - 100 ms (actual time depending on number of I/O modules)

Supply current on Electrical

Modulebus

Supply current: Max 24 V - 1.0 A (short circuit proof, fuse 2.0 A), Max 5 V - 1.5 A (short circuit proof)

I/O capacity on PROFIBUS

(remote I/O)

Max 99 I/O stations (max 62 redundant I/O stations), max 24 I/O modules per I/O station (max 12 redundant I/O 

pairs)

Ethernet channels 1 2 2 2 2

Ethernet interface Ethernet (IEEE 802.3), 10 Mbit/s, RJ-45, female (8-pole)

Control Network protocol MMS (Manufacturing Message Service) and IAC (Inter Application Communication)

Recommended Control

Network backbone

100 Mbit/s switched Ethernet

No. of controllers on Control 

Network

Max 50

RS-232C interface 2 (one general, 1 for service tool)

RS-232C interface (COM3) 

(non red.conf. only)

RS-232C, 75-19 200 baud, RJ-45 female (8-pole), not opto isolated, full RTS-CTS support

RS-232C interface (COM4) 

(non red.conf. only)

RS-232C, 9 600 baud, RJ-45 female (8-pole), opto isolated, no RTS-CTS support

Temperature

• Operating

• Storage

+5 to +55 °C (+41 to +131 °F)

-40 to +70 °C (-40 to +158 °F)

Temperature changes 3 °C/minutes according to IEC/EN 61131-2

Altitude 2000 m according to IEC/EN 61131-2

Pollution degree Degree 2 according to IEC/EN 61131-2

Corrosion protection G3 compliant to ISA 71.04

Vibration 10 < f < 50 Hz: 0.0375 mm amplitude, 50 < f < 150 Hz: 0.5 g acceleration, 5 < f < 500 Hz: 0.2 g acceleration

Emitted noise < 55 dB (A)

Features / CPUs PM851A PM856A PM858 PM860A PM861A (Classic)

Shock, no package 150 m/s2 in 11 ms, 20 g in 3 ms

Relative humidity 5 to 95 %, non-condensing

Isolation voltage Type test voltage: 500 V AC (corresponding to 700 V DC)

Environmental conditions Industrial

Protection class IP20 according to EN 60529, IEC 529

Certificates and 

Standards (1)

CE- marking: Meets EMC directive 2004/108/EC acc. to EN 61000-6-4, EN 61000-6-2 and Low Voltage Directive acc. 

to EN 61131-2

Electrical Safety: EN 50178, IEC 61131-2, UL 508 (Note! UL 508 not valid for PM858, PM862)

Hazardous location: cULus Class 1, Zone 2, AEx nA IIC T4, ExnA IIC T4Gc X (Note! UL 60079-15 not valid for PM858, 

PM862)

RoHS compliance: EN 50581:2012

WEEE compliance: DIRECTIVE/2012/19/EU

TÜV Approval No No No No No

Emission Tested according to EN 61000-6-4 EMC – Generic Emission Standard, Part 2 – Industrial Environment

Immunity Tested according to EN 61000-6-2 EMC – Generic Immunity Standard, Part 2 – Industrial Environment

Dimensions Width 119 x Height 186 x Depth 135 mm (4.7 x 7.3 x 5.3 in.)

Weight (including base) 1100 g (2.4 lbs) 1100 g (2.4 lbs) 1200 g (2.6 lbs) 1100 g (2.4 lbs) 1200 g (2.6 lbs)

(1) For detailed information on each module, please visit: www.compacthardwareselector.com

Features / CPUs PM862 PM864A (Classic) PM866A PM891

Article number 3BSE076940R1 (PM862K01)

3BSE081636R1 (PM862K02)

3BSE018161R1 (PM864K01)

3BSE018164R1 (PM864K02)

3BSE076939R1 (PM866AK01) 

3BSE081637R1 (PM866AK02)

3BSE053241R1 (PM891K01) 

3BSE053242R1 (PM891K02)

Processor Unit PM862K01 incl:

1 PM862 CPU and required 

optional items.

PM862K02 incl:

2 PM862K01

PM864AK01 incl:

1 PM864A CPU and

required optional items

PM864AK02 incl:

2 PM864AK01

PM866AK01 incl:

1 PM866A CPU and 

required optional items

PM866AK02 incl:

2 PM866AK01

PM891K01 incl:

1 PM891 CPU and required 

optional items

PM891K02 incl:

2 PM891K01

Optional items 

(partly included in Processor Units, 

see Price List) 

TP830 Baseplate, TP850 CEX-bus term., TK850 CEX-bus cable, TB807, Modulebus term, Battery RAM backup, TB852/

TB853 RCU-link term, TB851/TB855/TB856 RCU-link cable, SB822 External Battery Unit, TK212A Tool cable, TC562 

Short Distance Modem, TK853V020 Modem cable, BC810K02, BC820K02, CEX-bus Interconnection unit; TK851V010 

Connection cable, SD831/SD832/SD833/SD853/SD854 Power Supply, SS832 Voting Unit, Mains Breaker Kit, SM811 

Supervisory Module and SM812 Supervisory Module.

Clock frequency 67 MHz 96 MHz 133 MHz 450 MHz

Memory (RAM) From 5.1 FP4 32 MB 32 MB 64 MB 256 MB

RAM available for application 23.521 MB 23.522 MB 51.389 MB 208.985 MB

Processor type MPC866 MPC862 MPC866 MPC8270

Flash memory for storage 

of application and data

Yes Yes Yes Yes

CPU redundancy support Yes Yes Yes Yes

Switch over time in red. conf. Max 10 ms Max 10 ms Max 10 ms Max 10 ms

Performance, 1000 boolean 

operations (a:=b and c)

- 0.15 ms 0.09 ms 0.043 ms

No. controllers per control projects 32

No. of applications per control 

project

1024

No. of applications per controller 32

No. of programs per application 64

No. of tasks per controller 32

Number of different cycle times 32

Cycle time per application

programs

Down to 1 ms (HI Integrity controllers 10 ms)

Flash PROM for firmware storage 4 MB 2 MB 4 MB 16 MB

Power supply 24 V DC (19.2-30 V DC) max 5 % ripple acc. to IEC 61131-2

Power consumption +24 V 

(typ/max)

210/360 mA 287/487 mA 210/360 mA 660/750 mA

Power dissipation typ. 5.1 W 6.9 W 5.1 W 15.8 W

Power Reservoir Internal 5 ms power reservoir, sufficient for the CPU to make a controlled power down

Power supply connector Detachable 4-pole screw terminal block

Redundant power supply

status inputs

Yes: 2 inputs designated SA, SB (Max 30 V, high level >15 V, low level < 8 V)

Built-in back-up battery Type: Lithium, 3.6 V, 0.95 Ah, size 1/2 AA, 0.3 g Lithium content No

Real-time clock stability 100 ppm (approx. 1 h/year) 50 ppm

Supported Communication 

modules

RS-232 C PROFIBUS DP MB300 S100 I/O INSUM Drivebus

Module CI853 CI854A (Classic)

CI854B

CI855 CI856 CI857 CI858

Article number 3BSE 018103R1 3BSE030220R1

(CI854A (Classic))

3BSE069449R1

(CI854B)

3BSE018106R1 3BSE026055R1 3BSE018144R1 3BSE018135R1

Protocol MODBUS RTU 

master, COMLI 

master/ slave, 

Siemens 3964R 

master, User 

defined protocols

DP-V1 (PA via

Linking Device)

MasterBus 300 ABB’s S100 I/O IEEE 802.3 ABB’s DriveBus

Master or slave Master/slave Master Master/slave Master Master Master

Number of channels 2 2 2 1 1 1 main, 2 aux

Max units on CEX bus 12 12 12 12 6 2

Transmission speed 75 - 19 200 b/s 9.6 - 12,000kbit/s 10 Mbit/s, 

200 Datasets/s

- 10 Mbit/s 4 Mbit/s

Cable redundancy No Yes Yes No No No

Module redundancy No Yes No No No No

Hot Swap Yes Yes Yes Yes Yes Yes

Connectors RJ-45 female 

(8-pin)

DB female 

(9-pin )

RJ-45 female 

(8-pin)

Miniribbon 

(36-pin)

RJ-45 female 

(8-pin)

Fiberoptic

24 V current consumption typ 100 mA typ 190 mA typ 150 mA typ 200 mA typ 150 mA typ 200 mA

Protection class IP20 according to EN60529, IEC 529

Certification (1)

• CE-marked Yes Yes Yes Yes Yes Yes

• UL 508 Yes Yes Yes Yes Yes Yes

• UL 60079-15 

(Class 1 Zone 2)

Yes Yes Yes Yes Yes Yes

• RoHS compliance EN 50581:2012

• WEEE compliance DIRECTIVE/2012/19/EU

Dimensions Width 58 x Height 186 x Depth 135 mm (2.3 x 7.3 x 5.3 in.)

Weight (including base) 520 g (1.2 lbs) 700 g (1.5 lbs) 700 g (1.5 lbs) 600 g (1.3 lbs) 600 g (1.3 lbs) 700 g (1.5 lbs