Automation control system components with electronic keying features

Abstract

Systems and methods for utilizing electronic keying features stored within one of the components (e.g., I/O modules, terminal blocks, bases) of I/O devices may include reading or detecting the electronic keying features using electronic key identification circuitry in one of the other components of the I/O devices. More specifically, the electronic keying features may include unique identification keys that may be read or detected by the electronic key identification circuitry to determine whether the components (e.g., a paired I/O module and terminal block) are associated with each other and intended to operate together. For example, the electronic key feature may be disposed within a terminal block and the electronic key identification circuitry may be disposed within an I/O module, or vice versa. In addition, the electronic key feature and/or the electronic key identification circuitry may be removable from their respective component of the I/O device.