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2.9
DNP 3 / Modbus Scada Interface (Option 21P/21Q)
The optional DNP 3/ Modbus Scada Interface Communication Card, allows the customer to remotely connect to
the TPSD battery charger. The card is equipped with four methods of communication; DNP 3.0, Modbus ASCII,
Modbus RTU and Modbus TCP. There are three different ports for connection to the communication card. The
three port types for connection are: RS232, RS485 and TCP (Ethernet).
Communication Interface Connection
Procedure
Before making any connections to the
TPSD ensure that the AC Power is off at
the main breaker box and that both of the
units’ breakers are off. Choose which port
to use for connection. Connect the
appropriate cable between the port on the
communication card and the port on the
computer.
For more details on connection instructions as well as operation instructions refer to the DNP 3.0 & Modbus
Scada Interface instruction manual included with the TPSD. The DNP 3.0 & Modbus instruction manual is also
available online at
http://www.lamarchemfg.com/
.
2.10 Battery side alarm sensing (Option 565)
The optional battery voltage sensing card (S2A-407S) will allow the customer to see the battery voltage even
when the unit DC breaker is open.
The Low Voltage and End of Discharge alarms are based on the voltage measured on the battery side of the
DCB when the option 565 is used. In case of sensing card failure, a special alarm “S2A-407S Failure” and a
summary alarms will be triggered. Also, the controller will start using the charger side voltage sensing for Low
Voltage and End of Discharge alarms.
Figure 14 - DNP 3 / Modbus Communication Card
