THE DIOS PIU AND PICCOLO-XR
UNITS
PIU Overview
The PIU unit (see Figure 18) is comprised of the following:
•
Internal radio interfaces and a radio modem
•
A logic board
•
Communication ports
24V AC
PGND/
Pwr IN
DC Switch
Figure 18
PIU Unit General View
RS485
Adaptor
Port
LEDs
RS232
27