OMRON C200H-CT021 High-Speed Counter Module for C200H Series PLCs

The OMRON C200H-CT021 is a dedicated high-speed counter module developed for the OMRON Sysmac C200H family of programmable logic controllers, including compatible C200HS, C200HE, C200HG, and C200HX rack systems. Operating as a specialized intelligent I/O unit, it processes rapid input pulses directly from incremental encoders, proximity sensors, or optical switches that exceed the normal scanning cycle frequency of the central processing unit. The unit features dedicated counter channels designed for reliable pulse evaluation, preset value comparisons, and immediate output response based on configured target counts. It connects directly into standard backplane slots of the C200H rack, receiving operating power and exchanging control parameters and numerical values seamlessly across the system bus. Engineered for fast-paced industrial control tasks, the C200H-CT021 is widely deployed in automated packaging lines, cut-to-length systems, conveyor sorting setups, machine tooling, and position tracking operations where precise speed detection and real-time pulse measurement are vital for production reliability.