The XIC, also known as Examine If Closed, instruction is one of the fundamental instructions used in ladder logic programming for Programmable Logic Controllers (PLCs). This instruction is always found on the left side of a ladder rung and will verify if the specified bit is in a logic HIGH state.

Normally Open (NO) Contact / Examine if Closed (XIC) The most fundamental symbol of ladder logic programming is the Normally Open Contact or the Examine If Closed XIC Instruction. This symbol was created as a direct reapplication of the relay …

Oct 3, 2019 · The XIO instruction is used in logic for conditions that we need to evaluate as false. Similarly, the XIO instruction can generally look at any bit anywhere in memory.

Jul 21, 2008 · An XIC instruction tells the computer to look at its (the instructions) associated device, if the device is closed then the computer sees the instruction as true.

For the purpose of this tutorial, we’ll start with two of the most basic instructions in ladder logic plc programming: Examine if Closed and Output Energize. Examine If Closed [XIC] - This input instruction will look at the specified boolean bit and evaluate the condition to TRUE when the bit is set to 1 (or HIGH).

Jul 20, 2022 · XIC vs XIO This may be one of the most important lessons for people new to Ladder Logic. Often this is something people have a difficult time grasping. Especially people with physical electrical backgrounds. XIC stands for Examine If …

Use an XIO instruction in your ladder logic to determine if a bit if off. Use OTE instruction in your ladder logic to turn on a bit when rung condition is evaluated as true. Lets construction a simple circuit with one switch as a contact and one output as a coil.

May 29, 2017 · Learning Basic ControlLogix Instructions (XIC, XIO, OTE), and basic functions (AND, OR, NOT). How to convert logic directly to English.

Jul 20, 2020 · There are three main methods used to translate relay control logic to contact symbolic logic: The symbol for the Examine If Closed (XIC) instruction is: ——–] [——–. The …

May 21, 2020 · The three most commonly used relay instructions in Rockwell PLC Ladder Logic are the XIC (examine if closed), XIO (examine if open) and OTE (output energized) instructions. The XIC, XIO and OTE can be compared to a normally-open contact, normally-closed contact and relay coil respectively.