CJ1W-CT021 High-Speed, Flexible Control With A Wide Array of Features. This unit is available for CJ/NJ controller

CJ1W-CT021 | O-mron | Special I/O Unit Number of Counters: 2 independent channels (Phase A, B, and Z signals per counter) Counter Types: Simple Counter, Circular Counter (Ring), and Linear Counter Maximum Counting Frequency: Up to 50 kHz for Open Collector inputs (5V, 12V, or 24V) Up to 500 kHz for RS-422 Line Driver inputs Counting Range: 32-bit counting range Digital I/O: 2 Digital Inputs (assignable to counters for control functions like gate, preset, reset, capture) 2