What does XIC look for in ladder logic programming?

The XIC (Examine if Closed) instruction in ladder logic programming is used to evaluate the status of a boolean condition, specifically looking for a bit that is set to 1. When the XIC instruction encounters a bit set to 1, it allows the rung in which it is contained to be true, enabling any output or subsequent conditions on that rung.

This function is fundamental in control systems, as it helps determine when certain outputs should be activated based on the status of inputs or bits in memory. The XIC instruction effectively checks alongside physical devices and internal memory locations to ensure that the correct actions are taken in response to desired conditions being met.

Other options mention conditions or types of bits that do not apply to the specific function of the XIC instruction. For instance, the XIC does not focus on bits being reset or temporary variables. Instead, it directly examines bits that indicate an On (1) condition, reinforcing its role in ensuring that processes are controlled correctly based on input signals.