Introduction

When a sensor is activated, it sends out a positive pulse, and when it is deactivated,it sends out a negative pulse.The controllers' job is to check and combine these pulses to trigger the proper response.

There are eight types of controller logic brick to carry out the logic process onthe input signal(s).This table gives a quick overview of the logic operations performed bythe logical controller types. The first column, input,represents the number of positive pulses sent from the connected sensors.The following columns represent each controller's response to those pulses.True means the conditions of the controller are fulfilled,and the actuators it is connected to will be activated;false means the controller's conditions are not met and nothing will happen. Please consultthe individual controller pages for a more detailed description of each controller.

It is assumed that more than one sensor is connected to the controller.For only one sensor, consult the "All" line.