11... APPENDIX A: MASTER ICON FILE REFERENCE
TIMED COUNTER FUNCTION ICON
The Timed Counter is a software counter that can be used within a Net for accumulating transitions over a fixed period of time( for example: counting pulses received per hour). In concept, this icon performs a similar function as a hardware counter input such as the GPDI in the Counter mode. However, the difference is that the Timed Counter is a software version that can be used to count transitions received from other software icons such as the Comparator.
The icon is has an Update Clock input that specifies the time period over which it is to accumulate the transitions received on its Input. The Net shown below counts the number of times per hour a temperature exceeds the 1400F threshold and stores this OverTemps per hour value in memory.
INPUTS:
Data/Logic Signal: Logic (True/False) type.
Update Clock: Specifies the period of time over which the count is accumulated. When an Update command is received, the current count is output and counting resumes (optionally it can be reset to 0 before counting resumes)
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 accumulated count is output.
ICON CONFIGURATION DIALOG BOX:
CONFIGURATION OPTIONS:
Icon Name: Specify the label for the icon. This name will show directly under the icon within the Program Net.
When ______ Update pulse is received, output the _____ count total: HyperNet
completes this functional statement using the names of the Outputs from the icons that are connected to this Counter icon’s Enable and Signal Inputs.
Clear Counter on Output: If this check box is checked, after the accumulated count total is passed to the Output, the total will be cleared and counting will restart from 0. If the box is not checked, counting will be cumulative, adding on to the current total.
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