ABB Advant Controller 450 - General Signal Paths

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1-46 3BSE 002 415R701 Rev A
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The input and output signals can be in digital or in analog form (current or voltage signals).
Figure 1-16 and Figure 1-17 shows, in principle, the layout of the signal paths for the input and
output signals for the different I/O systems. The signal paths are built up of the following units,
which are described in principle below.
S100 I/O:
• External signal cable
• Connection unit
• Internal cable
• I/O board
• Bus extension to S100 I/O
• Internal system bus.
S400 I/O:
• External signal cable
• I/O unit
• MasterFieldbus LDB (long-distance bus)
– Bus cable
– Modem.
• MasterFieldbus SDB (short-distance bus)
• Modem/Connection Unit TC570
• Communication module for MasterFieldbus
• Internal system bus.
S800 I/O:
• External signal cable
• Module Terminal Unit (MTU)
• I/O module
• Fieldbus Communication Interface (FCI)
• Advant Fieldbus 100
• Communication module for Advant Fieldbus 100
• Internal system bus.