# And This function block performs a logical AND operation on two boolean inputs and outputs a single boolean result. It is used to combine two conditions: the output is True only when both inputs are True. ## đŸ“Ĩ Inputs * `Boolean` (first input) Provide a boolean condition (e.g., result of a comparison or a manual boolean input). * `Boolean` (second input) Provide a second boolean condition to combine with the first. ## 📤 Outputs * `Boolean` Result of the AND operation. True when both inputs are True, otherwise False. ## 🕹ī¸ Controls * `No Controls` This block has no adjustable widgets. It only evaluates the provided boolean inputs. ## ⚙ī¸ Running mechanism When the system runs, the block evaluates both boolean inputs and returns a single boolean output. The result reflects the logical AND of the two inputs: True only if both inputs are True. Use comparator blocks or boolean inputs upstream to produce the required boolean signals. ## đŸŽ¯ Features * Simple and reliable boolean combination for flow control and triggers. * Works with comparator and boolean-producing blocks to build condition logic. * Small and lightweight — ideal to use inside decision branches or to gate actions. ## 📝 Usage examples * Combine a detection check and a timer: feed a detection comparison (for example, use a `Greater` block on an `Object Count` output) into one input and a timing/enable boolean into the other to trigger actions only when both are satisfied. * Ensure both inputs are boolean-producing blocks such as `Logic Input`, comparators (`Greater`, `Smaller`, `Equals`), or other logic blocks (`Not`, `Or`). ## 💡 Tips and Tricks * To check that an object is present and a safety condition is met: use `Object Detection` (or `Object Detection - Custom`) → compare its `Object Count` with `Greater` → combine that result with a `Safety Equipment Detection` check using this `And` block. * For multi-condition checks (more than two conditions), use `All True` to evaluate a list of boolean values, or chain multiple `And` blocks. * Use `Not` to invert a condition before feeding into `And` if you need to require a negative condition (for example, "object present" AND "not alarmed"). * Use `Edge Rising` or `Rising Edge` when you want the `And` result to trigger only on a signal transition (combine the edge output with another boolean in this block). * To toggle outputs (e.g., LEDs or logging) when combined conditions are met, feed this block's output to `Led Output`, `Image Logger`, `Image Write`, or `Record Video`. ## 🛠ī¸ Troubleshooting * Unexpected False result: verify both upstream outputs are actual boolean values. Use `Logic Input` or comparator blocks (`Greater`, `Equals`, `Smaller`) to convert numeric outputs to boolean conditions. * Unexpected True result: check that neither input is unintentionally True (e.g., default or uninitialized signals). Use `Is None` or `Data Type Converter` earlier in the chain to validate inputs. * Need more than two conditions: either chain `And` blocks or use `All True` to evaluate a list of boolean values. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.augelab.com/function-blocks/data-logic/logic/and.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.