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4 Communicating with the Recorder
4-18 TESLA LITE User Manual D03283R01.10
DNP Protocol
The relay supports a DNP3 (Level 2) SCADA connection. DNP3 is available
via a direct serial link or an Ethernet LAN connection using either TCP or
UDP.
Serial DNP communications can be utilized exclusively via serial Comm Port
404. Comm Port 404 is an RS232 DCE DB9F port located on the back of the
relay. An external RS-232 to RS-485 converter can be used to connect the relay
to an RS-485 network.
Network DNP communications can be utilized via physical LAN Port 401.
Port 401 is available as a pair of RJ-45 ports, one on the front of the recorder
and one on the rear. DNP communications can be used with multiple masters
when it is utilized with TCP.
The data points available for DNP SCADA interface are selectable by the user.
Complete details regarding the DNP3 protocol emulation and data point lists
can be found in “DNP3 Device Profile” on page Appendix E-1.
Figure 4.13a: DNP_point_map