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Outpost2 SCADA Software
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Outpost2 SCADA Software |
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Designed for the water and wastewater industry, MultiTrode's Outpost2 SCADA Software is built around MultiSmart, but can accommodate any product. Use of OPC and DNP3 protocols ensures an open system.
Architecture
The SCADA system's main components are:
Protocols
MultiTrode's Outpost2 SCADA is built on open protocols:
- DNP3 is used for communicating between the MTU and the field hardware
- OPC is used for communicating between the HMI, the Historian and the MTU.
DNP3
DNP3 is an open and public protocol specifically designed for the requirements of telemetry. It has great flexibility and is used widely in the electricity industry. The main benefits for the water industry are:
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Date/Time Stamping - Each event and alarm has a native date/time stamp. If data is received by the SCADA system or Historian after the fact, the event is logged as occurring at the original time, not the time it was received. For example, if a radio failed and was not replaced for several hours, all of the data from that period would still make it to the SCADA and Historian. This is not the case with a protocol like MODBUS.
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Different classes of Data - You can nominate critical alarms to be sent immediately, and event data (e.g. pump on/off times and level changes) to be sent every 30 minutes, or when polled by the SCADA system. Because the original date/time is always kept, the SCADA has a perfect record. This kind of arrangement ensures that bandwidth is used effectively, rather than having to send every event as it occurs, as happens with MODBUS.
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Guaranteed Delivery - The protocol supports acknowledgements from the SCADA (or other master unit) to ensure that alarms are never lost.
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Supported by many Suppliers Worldwide - Because no manufacturer owns it, the customer isn't locked-in to a single supplier, affording the customer greater peace of mind and better choice of equipment.
For more information, visit the DNP3 Users Group website: www.dnp.org.
OPC
OPC is the most widely used open protocol in the SCADA industry. OPC allows different vendor products to communicate with each other without needing to write drivers from one product to another.
One of the best features of OPC is the way an OPC server "publishes" tags to the network, so an OPC client can view the tags in Windows Explorer style hierarchy, rather than having to know the manufacturer's obscure tag naming convention.
The Genesis32 platform is "OPC to the core" meaning that each component - the trend system, the alarm system and the graphics HMI - all have OPC interfaces. This means the system is totally open and you will never be locked into one supplier.
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