Owner's Manual

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INTRODUCTION
Scope of this Manual
This manual provides instructions for the installation and
operation of the Distributed I/O system Piccolo Interface Unit
(PIU) and Piccolo XR Plus units. The Distributed I/O System
includes PIUs and Piccolo XR Plus. Each PIU can be linked to
up
to 256 Piccolo XR Plus. For more information on the PIU
and
Piccolo XR Plus, see the online help of the DIOS Service
Toolkit.
General Description
The Distributed I/O System (DIOS) is a self-sustained system
designed to function within the IRRInet irrigation control
product line.
The DIOS consists of the following components:
 Piccolo Interface Unit (PIU)
 Piccolo XR Plus Units
The PIU functions as an interface between the host application
(irrigation SW and HW) and the Piccolo XR Plus units. The
PIU
and Piccolo XR Plus are portable devices, which are used
in fixed
installations. The PIU uses one of its communication
ports to
link to the host application and radio communication
to link to
the Piccolo XR Plus units. Figure 1 provides a
general view of the
DIOS System.