ABB PM511V16 3BSE011181R1 Processor Module
Description:
PM511V16 is the central processor module of ABB Advant Controller 450 system. It is designed to fit into RF533 series controller subracks. 

The Motorola 68040 processor is a 32-bit virtual memory microprocessor with an integrated floating point unit and with dual independent instruction and data demand paged memory management units (MMUs). It also has two separate 4 kbyte caches, one for data and one for instructions. 

The dynamic RAM memory is organized as a 64-bit memory with an 8-bit cyclic redundancy check sum. 

The module has a Futurebus+ type interface with 32-bit address/data lines supporting compelled transfers. 

Distributed arbitration is used. Arbitration messages are supported. 

To support a configuration with two redundant processor modules with one running in backup mode, PM511V is equipped with logic that transfers a copy of all writes in the primary processor to the backup processor, thereby keeping a complete updated copy of the primary processor’s memory in the backup processor. This makes it possible for the backup processor to resume the operation directly in the event of a failing primary processor. 

The module has an interface to the S100 I/O extension bus which makes it possible to connect it to the bus extension board DSBC 174 or DSBC 176 in a S100 I/O rack. 

The PCMCIA slot accepts flash memory cards for system software. 

The module front has LED indicators for status information, a start mode selector switch and an ENTER push button to manually initialize the controller. You can find the operation description of these facilities in this manual. 

A label on module side gives the full identification and information of actual memory size. Available versions are designated PM511V08 or PM511V16.