14 • SMP Gateway User Manual
REAL-TIME
DATA EXCHANGE
DNP3
SLAVE
MODBUS
MASTER
TCP/IP
CONNECTION
RS-232
CONNECTION
SCADA
DEVICE
Figure 7 The SMP Gateway protocol translator
2.2.3 Using the SMP Gateway as a Data Concentrator or Device
Multiplexer
The SMP Gateway architecture is designed to simultaneously support any number of master
components. Each component has its own communications link and its own protocol. All the data
retrieved from the devices is stored in the RTDX, where it becomes available to the SCADA.
Using the SMP Gateway as a data concentrator is a simple matter of configuration, and it provides
a highly efficient means of adding new devices to an existing automation system. The SCADA
system has no knowledge of the new devices; it only sees new data points.
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