Main Processing Module (Mpm); Signal Processing Module (Spm) - ABB REC 561 User Manual

1MRK 580 148-XEN
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2.1 Main processing
module (MPM)
2.2 Signal processing
module (SPM)
Construction and hardware
characteristics - REC 561
The terminal is based on a pipelined multi-processor design. The 32-bit
main controller receives the result from the Signal processing module
every millisecond. The controller also serves four serial links: one high-
speed CAN bus for Input/Output modules and three serial links for the
different types of MMI communication explained below.
The main controller makes all decisions, based on the information from
the Signal processing module and from the binary inputs. The decisions
are sent to the different output modules and to these communication ports:
• Built-in MMI module including a front-connected PC, if any, for
local man-machine communication
• LON communication port at the rear
• SPA communication port at the rear (option)
All analogue data is received in all of the up to 12 (16 bits) digital signal
processors (DSP). In these DSPs, the main part of the filtering and the
calculations occur. The result from the calculations in the DSPs is sent
every millisecond on a parallel bus to the (32 bit) main controller on the
Main processing module.
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