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Configuration
3.11
How to configure the Totalizer Block
The Totalizer function block obtain the input data from the Transducer block, selected by channel
number, and integrates over the time. This block is normally used to totalize flow, giving total mass
or volume over a certain time, or totalize power, giving the total energy.
The Totalizer Function Block integrates a variable (e.g flow rate or power) in function of the time to
the corresponding quantity (e.g., volume, mass or distance). The rate unit of the Totalizer is
providing by the transducer block. Internally, the time units are converted in rate units per second.
Each rate, multiplied by the block execution time, gives the mass, volume or energy increment per
block execution.
The TOTAL is the totalized quantity. The engineering unit used in the output is the UNIT_TOT. The
unit of the output must be compatible with the unit of the input provided by the transducer by the
channel. Then, if the input the rate is mass flow (like Kg/s, g/min, ton/h) the unit of the output must
be mass (like kg, g, ton, lb, etc.).
For more details, please, see the Function Blocks Specifications.
To configure the Totalizer Block in offline mode, please, go to the main menu and select "Device
Offline Configuration - Totalizer Block. Using this window, the user can configure the block mode
operation, selects the channel, totalizer mode and unit for the total. The user can choose up to 3
Totalizer Blocks:
Figure 3.8 - Simatic PDM - Onffline Configuration - Basic Settings for Totalizer Block
The user can set the
conditions for totalization
and the unit.
The user can choose
the channel value.
The user can set
the block mode.