ABB ControlMaster CM10 User Manual page 85

ControlMaster CM10, CM30 and CM50
Universal process controllers,
...Functions / ...Math Blocks / ...Block Type
Real Time
Average
Max Hold
Min Hold
Multiplexer
Square Root
IM/CM/S–EN Rev. R
1 1 1
/ , / and / DIN
8 4 2
Calculates the average value of a parameter over a user-configurable duration. The output of
the math block is updated at the end of the configured duration only. A reset signal can be
configured to restart the calculation of the average value.
The average value is stored in case of power failure. If the duration of the power failure is longer
than the Average Duration (see page 85), the math block output value is set to zero.
The math block output represents the highest value of the signal since it was reset.
The math block output represents the lowest value of the signal since it was reset.
Enables 1 of 2 analog signals or constant values to be selected using a digital signal.
A
B
Output
Select
Calculates the square root of the selected sources value. If the input is less than 0, the output
is set to zero and the math block output state set to invalid.
Select
0 1
A B
Output
7 Advanced Level
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