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D: DNP 3.0 Protocol Assignments
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D: DNP3 Protocol Assignments
DNP3 protocol is available in the Shark® 100 meter if the meter is a V3 or V4
optioned unit. The meter must also be equipped with an RS485 port. The Shark® 100
meter does not support DNP over Ethernet - only Modbus over Ethernet is available.
D.1: DNP Implementation
PHYSICAL LAYER
The Shark® 100 meter can use RS485 as the physical layer. This is accomplished by
connecting a PC to the meter using the meter’s RS485 connection (see Chapter 5).
RS485
RS485 provides multi-drop network communication capabilities. Multiple meters can
be placed on the same bus, allowing for a Master device to communicate with any of
the other devices. Appropriate network configuration and termination should be
evaluated for each installation to insure optimal performance (see Chapter 5).
Communication Parameters
Shark® 100 meters communicate in DNP3 using the following communication
settings:
• 8 Data Bits
• No Parity
• 1 Stop Bit
• Baud Rates: 9600, 19200, 38400, 57600