1. System configuration
3
The I/O system consists of the I/O base unit UIOU12, I/O module, and base cards UIOU5n and
6n. These components are directly connected to the terminal block unit of the existing DPCS
via the dedicated cables. The DPCS system can be migrated to the DS system smoothly
without rewiring the external input-output lines.
High reliability can be achieved by online insertion/removal and redundancy of bus signals that
are essential for continuous operation of instrument control, and intelligence functions that
support diversity of signals from the site allow applications in a wide variety of fields.
I/O base unit
UIOUnn
Replaced
PI/O unit
VIOUX2
PI/O card
VTBUXn
Terminal block unit
I/O module
Used as is
(including cable)
Configured by connecting
I/O base cards corresponding
to the I/O module.
UIOU1
I/O base card
Fig. 1.2 I/O system configuration
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