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Sample Application
180
SR2MAN01 11/2007
Special function
blocks
Below is the list of special function blocks that the application will use:
Smart relay label Name
Counter C1 Counts the number of vehicles in the car park (93
maximum).
Clock function block H1 Manages car park access hours.
Timer function block T1 Lighting timer (10 minutes).
Analog function block A1, the
authorized threshold value
corresponds to 8.5 Volts.
Compares the CO2 level measured with the allowable
threshold.
Timer function block T2 Fan timer (15 minutes).
Note: To implement this solution, a smart relay with analog inputs, clock function
blocks and at least 4 discrete inputs and outputs.