
Trusted
TM
Module T8432
Issue 16 Apr 10 PD-T8432 8
1. Description
The Dual 24V dc Analogue Input module is a member of the Trusted
TM
range of Input/Output (I/O)
m
odules. All Trusted
T
M
I
/O modules share common functionality and form. At the most general level,
all I/O modules interface to the Inter-Module Bus (IMB) which provides power and allows
communication with the Trusted
TM
TMR Processor. In addition, all modules have a field interface that
is used to connect to module specific signals in the field.
Figure 1 Module Architecture
All High Integrity I/O modules comprise four sections: Host Interface Unit (HIU), the Field Interface Unit
(FIU), the Field Termination Unit (FTU) and the Front Panel Unit (or FPU).
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