Operation principle and hardware description 55
The diagram below shows a connection example for SCADA, PLC or data logger when a
Modbus/TCP connection is used.
CDP-312R control panel
The CDP-312R is the user interface of the inverter unit, providing the essential controls
such as Start/Stop/Reset/Reference, and the parameter settings for the inverter control
programs. The control panel is connected to the RDCU units. For information on using the
control panel, refer to the firmware manual.
SCADA / Data logger /
PLC
SLOT 1
SLOT 2
RDCU
(A43)
R
E
T
A
-
0
x
SLOT 1
SLOT 2
R
E
T
A
-
0
x
RDCU
(A43)
• • •
Ethernet
switch
Inverter 1
Inverter n