B. Braun 871 5416, Service Manual

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System Overview
1
1 - 4 Infusomat® fmS 2.3 gb
Function Two independent software-controlled microprocessor systems
control and monitor the hardware. On the basis of their functions,
they are defined respectively as a control and a function proces-
sor. Both systems work with independent clock frequencies and
have access to different program and data memories. All safety-
relevant functions are handled by both microprocessors and the
results are counter checked (CF- and FC-latch).
The input via the keyboard is fed to both processors. Additionally
the acknowledgement signal of the ON/OFF key is fed to the
mains power supply logic (voltage E/A-TAS). The function proces-
sor has also access to this logic via E/A-INT.
Description of the voltage signals (see „Signal Table“
➪
p. 1 - 6) .
Fig.: 1 - 3 Block diagram