OMRON C200HW-MC402-E Motion Control Unit for C200H PLC

The OMRON C200HW-MC402-E is a dedicated motion control module designed for the C200H programmable logic controller platform. This unit provides high-speed, coordinated positioning control for up to four axes, making it ideal for applications requiring precise servo or stepper motor synchronization. It integrates seamlessly with the C200H backplane, sharing data with the CPU via shared memory.

Axis Control Specifications

The MC402-E supports up to four axes of independent or interpolated motion. Each axis can be configured for position, speed, or torque control, with feedback from incremental encoders or absolute encoders. The module outputs pulse train commands (up to 500 kpps) or analog voltages (±10 V) to servo drives. It also supports electronic gearing and cam profiling for complex motion sequences.

Motion Control Functions

Built-in functions include linear and circular interpolation, point-to-point positioning, continuous path control, and homing routines with multiple reference modes. The unit offers acceleration/deceleration profiles (trapezoidal, S-curve) and can handle up to 100 motion programs stored in its onboard memory. It also provides backlash compensation and position latching for high-accuracy operations.

Communication and I/O

The module communicates with the PLC CPU through the C200H bus, allowing direct read/write of motion parameters and status flags. It also includes dedicated I/O points for external start/stop, emergency stop, and limit switch inputs. An RS-232C port is available for connection to a programming terminal or host computer for parameter setup and monitoring.

Programming and Configuration

Configuration is performed using OMRON's CX-Motion software, which provides a graphical interface for setting axis parameters, creating motion profiles, and debugging. Users can define motion sequences using OMRON's motion language (similar to G-code) or integrate motion commands within the main PLC ladder logic. The module supports online changes and real-time monitoring of axis status.

Diagnostics and Error Handling

LED indicators on the front panel show power, communication, and axis error statuses. The module logs error codes with time stamps, and can trigger a PLC interrupt upon fault detection. Self-diagnostics cover encoder disconnection, over-travel, and software limit violations.

Electrical and Environmental Ratings

Operating voltage: 5 VDC from backplane (300 mA). External 24 VDC supply required for I/O (approx. 100 mA). Temperature range: 0 to 55°C, storage: -20 to 75°C. Humidity: 10-90% non-condensing. The unit is CE and UL certified.

Mounting and Compatibility

The module fits into any I/O slot of the C200H rack. It is compatible with all C200H CPUs (e.g., C200HE, C200HG, C200HX). Up to two motion units can be installed in one system for up to 8 axes total.

Applications

Typical applications include pick-and-place machines, X-Y tables, packaging machinery, labeling systems, and conveyor synchronisation. It is also used in semiconductor manufacturing and small robotic arms.

Installation and Maintenance

Installation involves inserting the module and connecting drive cables to the front connectors. Regular maintenance includes checking cable integrity and updating firmware via the serial port. The module's non-volatile memory retains parameters without battery backup.

In summary, the OMRON C200HW-MC402-E motion control unit delivers powerful, multi-axis control capability within the C200H environment, enhancing machine precision and productivity.