S&C TripSaver II - Page 59

S&C Instruction Sheet 461-509 59
DNP3 Outstation General Settings
In this panel are two elds and one toggle button, the TCP Keepalive Timer and the
DNP3 Inactivity Timer elds and the Disable DNP3 Object Flag Comm_Lost toggle
button, specic to settings for communications between the communications gateway
and the SCADA master. See Figure 57.
Figure 57. The DNP3 Outstation General Settings panel.
The fields are defined as follows:
• TCP Keepalive Timer. This eld is a heartbeat timer and is the interval between the
DNP3 keepalive messages sent over a TCP connection.
• DNP3 Inactivity Timer. This is the length of time, in minutes, the gateway will wait
for DNP3 trafc from a SCADA master before performing recovery actions to restore
DNP3 connectivity. A value of zero (0) disables the DNP3 recovery mechanism.
• Disable DNP3 Object Flag Comm_Lost. This setting disables the Comm_Lost ag
in DNP3 standard object ags. When enabled, the Comm_Lost ag can cause frequent
DNP3 events.
Conguring the Communications Gateway