Basic Unit PM 802F /PM 803F

Features 

Page 4 June 2006 

… Super Scalar RISC microprocessor (up to 150 MIPS) 

… 16 K internal CPU cache RAM 

… RAM memory with error detection and correction 

PM 802F: 4 MB static 

PM 803F: 16 MB synchronous dynamic 

… Flash-EPROM 

PM 802F: 4 MB, 32-bit words 

PM 803F: 8 MB, 32- bit words 

… EEPROM, serial, 16 Kbit 

… Monitoring of the temperature inside the device 

… Watchdog 

… 4 slots for fieldbus modules 

… 2 slots for Ethernet communications modules, 32-bit data 

bus, 100 MBytes/s 

… Battery backup incl. battery watchdog

Description 

The basic unit, PM 802F and respectively PM803F, cyclically 

scans signals from the fieldbus sensors via the corresponding，fieldbus modules, processes these signals according the application programs installed by the user and sends appropriate，signals to the fieldbus actuators via the fieldbus modules. 

Controller redundancy can be achieved by installing two 

AC 800F. To ensure quick and smooth takeover by the secondary AC 800F in case the primary AC 800F fails, a dedicated redundancy communications link through the second Ethernet module makes sure that both AC 800F are always synchronized. All inputs and outputs are designed to support redundant operation. 

Data communication between AC 800F, process and operator 

stations runs over the Ethernet system bus on the first Ethernet module. Data exchange with the engineering station is also carried via the system bus. Engineering station communications can involve new or updated configuration files being downloaded to the process stations, or information about the connected modules being reported back. When fieldbus modules are installed or exchanged, the required configuration information is automatically updated. 

Configuration and real-time process data is stored in RAM. To safeguard this data in case of power loss, the RAM power is backed up with batteries located either on the Ethernet modules or on battery modules. 

The PM 803F has more memory than the PM 802F and is therefor capable to handle larger projects. Due to increased memory size and different technology the buffering times were reduced.

Technical Data

CPU Intel 80960HT25/75 

32-bit RISC Super Scalar processor 

up to 150 MIPS

RAM PM802F: 

4 MB static read/write memory 

battery back up 

PM 803F 

16 Mbytes synchronous dynamic 

read/write memory, battery back up

I/O scan cycle time Selectable by configuration. Depends on 

the capabilities of the fieldbus module

Processing time for 

1000 instructions < 1.0 ms for binary and 16 bit arithmetic 

instructions 

 < 2 ms for fixed point arithmetic instructions 

 < 1.5 ms for 32 bit arithmetic instructions

Power consumption: 

Basic unit only: PM 802F PM 803F 

max. 6.3 W max. 7.8 W 

depending on CPU usage and cycle time

Power supply PM 802F PM 803F 

115 - 230 V AC SA 801F SA 811F 

2 x 24 V DC SD 802F SD 812F

Max. power output see power supply modules

Weight 1.6 kg 

max. 5 kg (fully assembled)

Dimensions Width 239 mm, 9.4 inches 

Height 202 mm, 8 inches 

Depth 164 mm, 6.5 inches