User's Manual

Table Of Contents
The DIOS PIU and Piccolo-XR Units
28
DC Power In
Figure 19
PIU Unit DC Power Connection– Rear View
PIU Communication Ports
The PIU has four ports:
NOTE!
Only one of the two RS ports (232 and 485) can be
operated at a time, i.e. they do not operate
together.
RS485: Communication between multiple PIU units
and
the FU.
RS232: Communication between the PIU and the FU;
Configuration Port (unit programming and
monitoring).
Adapter port: Communication with and programming
the Piccolo-XR units.
Internal Radio interface: internal DPSK modem.