Which of the following is NOT a common feature of I/O modules?

In the context of I/O (Input/Output) modules, processing power is generally not considered a common feature. I/O modules primarily serve to interface between field devices, such as sensors and actuators, and the control systems. Their main functions include signal conditioning, which prepares and modifies signals from field devices for accurate transmission and interpretation, and connection to field devices, allowing for communication and interaction with these inputs and outputs.

Data storage is not typically associated with I/O modules either; rather, it pertains to the storage solutions within the control system or PLC (Programmable Logic Controller) that ultimately processes the information from the I/O modules. While some advanced systems may incorporate a degree of processing capabilities within certain I/O modules, the primary role of these modules is to facilitate data transfer and conditioning rather than perform complex processing tasks. Overall, the I/O modules focus on their specific functions supporting the main control systems, rather than executing extensive processing activities.