The Mitsubishi Expansion Module L6EXE-CM is a compact and efficient interface component designed for use in programmable logic controller (PLC) systems. It features an internal DC5V current consumption of only 0.08A, ensuring low power operation, and weighs just 0.13kg, making it suitable for space-constrained industrial environments.

1. Field Input Interface Module: This module is composed of an optocoupler unit and a microprocessor-based input interface. Its primary function is to serve as the input channel between the PLC and field-level control interfaces. The optocoupler provides electrical isolation, protecting the PLC from voltage spikes or noise in the field signals, while the microprocessor interface processes incoming digital or analog signals for further logic execution.

2. Field Output Interface Module: This module integrates output data registers, a gating (or selection) unit, and an interrupt request subsystem. Its role is to enable the PLC to deliver precise control signals to field actuators, such as motors, valves, or indicators. The output data register stores the control commands, the gating module ensures correct signal routing, and the interrupt request mechanism allows for timely responses to critical process changes, thereby enhancing real-time control performance.