Senin, 08 Agustus 2011

Difference between and RTU and PLC with DNP3 Protocol

RTU is focussed on responding to supervisory control sequences from multiple masters / slaves where comms can fail at any time.


PLC has no inbuilt resilience or fall back plan for comms failures or recovery
Polling protocols are expected to return information  in sequence with the computation cycle
DNP3 Protocol
One of the most common SCADA protocols in use today
Supported by DNP3 User Group
Full featured providing
Buffered Data (SOE)
Time Stamps
Quality Processing
Rich data types
Compatible with SCD5200, SCD2100, SCD2200, most 3rd party devices
Driver is integrated, full featured, supports triple redundancy and full SOE

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