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Figure 12: RCU functional block diagram
Power supply solar panel
115 V or 230 Vac
16
SCADA system protocols
The following SCADA system protocols are
supported by the RCU:
1. DNP3 over serial port
2. Others in future.
RCU Connect on a PC
RCU enclosure
Electronics compartment
Standby battery
Power supply
system
Operator control panel
(on radio tray)
It is important to understand that each
protocol is different but that they all utilize
the data in the RCU database and map it
into the SCADA protocol in a different way.
The mapping and other details needed to
understand how to program the SCADA
system master station are given in the
relevant protocol manual. The details of the
RCU database are given in the relevant
protocol manual.
Fusesaver communications module
Short-range radio
(built-in antenna)
Microprocessor
Data interface
Long-range radio
(on radio tray)
To SCADA system
External antenna on pole
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