Description

The Toshiba HC422H is a high-performance 2-channel high-speed counter module designed for use with Toshiba’s T1-series programmable logic controllers (PLCs), including the T1-16EX, T1-32EN, and other TOSMAP-compatible base units. Engineered for demanding industrial automation tasks, the HC422H provides independent, hardware-based counting of fast pulse signals from encoders, proximity sensors, flow meters, or rotary position transducers—without burdening the main PLC CPU.

Each channel on the Toshiba HC422H supports multiple counting modes, including up/down, pulse + direction, and quadrature (A/B phase) decoding at speeds up to 100 kHz, enabling precise real-time tracking of position, speed, or batch totals in applications such as web tension control, cut-to-length systems, or servo feedback monitoring. The module features optically isolated inputs (5–24 VDC) to protect against electrical noise, ground loops, and voltage surges common in factory environments.

With built-in preset, compare, and latch functions, the HC422H can trigger interrupts or set internal flags when target counts are reached—ideal for automated stop, reject, or indexing operations. Configuration is handled via Toshiba’s TOSMAP or T-Engine programming software, where users define count mode, filter settings, and I/O mapping without complex ladder logic overhead.

Technical Specifications

Main Features and Advantages

✅ Hardware-Accelerated Counting
Unlike software-based counters that consume PLC scan time, the HC422H uses dedicated FPGA-like circuitry to process pulses independently—ensuring no missed counts even during complex program execution.

✅ Flexible Encoder & Sensor Interface
Supports industry-standard incremental encoders (A/B/Z), magnetic pickups, and high-speed photoelectric sensors. Quadrature decoding enables bidirectional motion detection with 1x, 2x, or 4x resolution enhancement.

✅ Real-Time Control Without Delays
Built-in compare registers allow the module to assert output signals or interrupt flags the instant a target value is reached—critical for high-speed cutoff, labeling, or part ejection systems.

✅ Robust Industrial Design
Optical isolation (2,500 Vrms) protects the PLC CPU from field-side transients. Wide input voltage tolerance accommodates both TTL (5 V) and industrial (24 V) sensor levels with simple wiring changes.

✅ Seamless T1-Series Integration
Installs in seconds onto the T1 expansion rail. Automatically recognized by TOSMAP software—no DIP switches or address jumpers required.

Application Field

The Toshiba HC422H is widely used in industries requiring accurate, high-speed event counting or position feedback:

• Packaging machinery: Bottle counting, label placement, film length control

• Material handling: Conveyor belt speed monitoring, pallet tracking

• Machine tools: Spindle RPM feedback, tool position verification

• Printing & converting: Web registration, cut-length accuracy

• Automotive assembly: Part indexing, robotic cycle validation

• Food & beverage: Filling volume verification via flow meter pulses

Related Products

Installation and Maintenance

? Installation Tips:

• Mount the HC422H directly to the right of the T1 base unit on the DIN rail.

• Connect encoder/sensor wires to terminals C0+/C0– and C1+/C1– using twisted-pair shielded cable.

• Ground the shield at the PLC end only to avoid ground loops.

• Configure counting mode and preset values in TOSMAP before runtime.

?️ Maintenance Recommendations:

• Periodically inspect terminal blocks for loose connections—vibration can loosen screws over time.

• Verify input signal integrity with an oscilloscope if erratic counts occur.

• Keep firmware/software backups of your T1 project file.

• Store spare HC422H modules in anti-static packaging in a dry, cool environment.