PACSys
tems™ RX3i DNP3 Outstation User Manual
Section 6
GFK-3103B
June 2020
CPU Performance Calculations
88
6.2
Maximum Impact on Sweep Time
The following equation gives this maximum impact on sweep time in relation to the total number of
configured events:
Maximum Impact on Sweep Time (mSec) = (0.00837244375 x N) + (T2
–
T1)
Where:
N = Total Number of Configured Events
T1 = Base Sweep Time of system without DNP3 Outstation enabled (mSec)
T2 = Base Sweep Time of system with DNP3 Outstation enabled and no Events are
available in the unit (mSec)
Total Number of Configured Events (N) =
No. of Configured Binary Input (DI) Events
+
No. of Configured Counter Object Events
+
No. of Configured Binary Output (DO) Events
+
No. of Configured Analog Input (AI) Events
+
No. of Configured Analog Output (AO) Events
+
No. of Configured Analog Output Value (AOV) Events
This equation only gives an approximate max impact on sweep time and the actual max impact
on sweep time may vary slightly from the calculated value.
Note: The increase in sweep time calculated with the above equation denotes the maximum
impact on sweep time, not the normal running sweep time, and it is likely to occur only in power-
up scenarios. In normal running condition, impact on sweep time due to DNP3 Event
Synchronization is minimal and is NOT calculated using the above equation.