OMRON C200HW-PCU01 Position Control Unit

The OMRON C200HW-PCU01 is a dedicated position control unit designed for the C200H series PLCs. This module provides two independent axes of pulse output for controlling stepper motors or servo drives in open‑loop (pulse‑direction) mode. It is ideal for applications such as indexing tables, positioning slides, and simple pick‑and‑place operations where precise point‑to‑point motion is required.

The PCU01 supports trapezoidal and S‑curve acceleration profiles, with programmable speeds, acceleration rates, and target positions. It includes built‑in limit switch inputs and an emergency stop input for each axis. The module communicates with the CPU via the C200H bus and occupies a single slot. Its compact design and straightforward configuration make it a popular choice for upgrading existing machines.

Technical Specifications

• Number of axes: 2 (independent, pulse‑direction outputs)

• Pulse output frequency: 1‑100 kpps (selectable)

• Position range: -8,388,607 to +8,388,607 pulses

• Acceleration/deceleration: Trapezoidal or S‑curve (programmable)

• Inputs per axis: 2 limit switches (CW/CCW), 1 home sensor, 1 emergency stop

• Outputs per axis: Pulse train (pulse + direction) and servo‑on signal

• Data transfer: 8 I/O words (control/status), 4 data words per axis

• Power supply: 5 V DC, 200 mA (from backplane)

• Operating temperature: 0°C to +55°C

• Dimensions: Standard C200H module (single slot)

• Certifications: CE, RoHS

Key Features

• Independent axis control: Each axis can operate separately with its own parameters, allowing simultaneous but independent movement.

• Absolute and incremental positioning: Supports both absolute (target position) and incremental (relative distance) commands.

• Home search function: Built‑in sequence for returning axes to a home position using a limit or proximity sensor.

• Interrupt feed: Can be triggered by external inputs for high‑speed positioning.

• Diagnostic status: Flags indicate completion, error, limit activation, and motion busy.

Typical Applications

• Indexing tables: Precise rotary positioning for assembly operations.

• Linear actuators: Positioning of pick‑and‑place heads and tool changers.

• Packaging equipment: Film feeding and cut‑to‑length control.

• Testing machinery: Positioning test probes over electronic components.

Integration with C200H PLC

Install the PCU01 in a free slot of the C200H rack. The CPU assigns I/O addresses automatically. Programming is done using CX‑Programmer or the handheld programmer: set the control bits and target position in the allocated memory area. The module executes the motion profile autonomously after receiving a start command. Completion and error status are read from status words. The unit also supports jogging and manual operation via software commands.

Wiring and Installation

Each axis connects via a 25‑pin D‑sub connector. Use shielded twisted‑pair cables for the pulse and direction signals, and connect the shield to the driver ground. Limit switches require 24 V DC signals (sink/source). The emergency stop input should be a normally closed contact. All wiring should be kept away from high‑voltage cables. The module’s LEDs indicate power, communication, and axis status.

Compliance

This module complies with EN 61131‑2 and EMC directives, carries CE marking, and is RoHS compliant.

Conclusion

The OMRON C200HW‑PCU01 provides a simple, reliable solution for adding two‑axis positioning capability to C200H PLC systems. Its flexibility and ease of programming make it suitable for a wide range of motion control tasks.