The Allen-Bradley 1756-HSC is a counter module that is used to perform high-speed counting for industrial applications. This module has selectable modes such as the frequency mode, or the counter mode for processing input signals. The counter mode is set as the default mode which can update data every 2 milliseconds. Users can change the storage of the count values because the 1756-HSC module uses the user-configured presets to evaluate it against the count values. This gives the module a faster response time for activating outputs, compared to when an evaluation is done in the controller. Preinstalled configuration tags are available with the 1756- HSC module
