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11.. . APPENDIX A: MASTER ICON REFERENCE
USING THE OMP-MODL 11-57
SUM FUNCTION ICON
FUNCTION:
Sums the input values received for a User specified number of input updates.The Sum
icon will accumulate a User specified number of input samples, then calculate and output
the arithmetic sum of this set of received input values.
For example, if a User wants to record the daily and hourly flow totals from a pulse output
flow meter, the above net could be used. Assuming each pulse from the flow meter
equals 1 gallon, then the Counter can be set to accumulate pulses for an hour, then
output these hourly totals. These hourly totals are stored in memory (Hr-Total) and also
fed into the Summing icon. This Sum icon is configured to totalize (sum) 24 inputs, then
output the daily sum to memory ( the sum of 24, 1 hour totals equals one days total).
INPUTS:
Data/Logic Signal: Data type.
Update Clock: None
Enable: Processing of icon is allowed when Enable pin is unconnected or
when connected and Enable signal is TRUE.
OUTPUTS:
Output Signal: Data type. The Sum icon updates its output with the arithmetic
sum of the User specified number of input readings.