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Controls up to 64 axes and connects I/O devices

Osai has launched the Open-Xli controller featuring optional CANopen connectivity. The CNC system is based on an i5 microprocessor suited for dual operating system configuration.

The Open-Xli is designed for CNC applications running under Windows 7 or Windows CE (Photo: Osai)

The CNC control platform provides several communication options. One is CANopen. Via this network interface up to 64 servos can be controlled. Additionally, the company’s I/O devices can be connected via CANopen to the host controller. The CNC control unit features a 4-GiB RAM capacity and provides a 128-GiB flash memory. USB ports, touch screen as well as Ethernet connectivity are additional features.

The product is able to process 12000 program blocks of five axis motion every second. It can manage either the dynamics of the movement or the geometry of the trajectories. By filtering the actuation of the commands, "soft" output commands are send to the servomotors. The CNC systems offers volumetric compensation for roll, pitch, and yaw. Roll is rotation about the x-axis, pitch about the y-axis, and yaw about the z-axis. If the machine were not built square, but the bed of the machine looks like a parallelogram, the system could compensate for that. Imagine a cantilever type machine in which one side of the X axis is at 0, the other side might be at 0,5 and further along the way they meet, then with X at 10, the other side is at 9,5, this can be compensated.

With the ODM (Osai Device Manager), the integrator can manage the kinematics of the machine, TCP (Tool Center Point), AMP (Adjustable Machine Parameters), and Spline geometry. The TCP can manage up to three rotary axes plus three linear axes. The TCP calculations are applied on the spline as other geometric entities. The spline can be applied on the tool tip or on the axes positions. The axes belonging to the spline can be configured in groups of axes that can be selected during programming. It is also possible to manage tilting and prismatic heads with the same configuration simply differentiating them through configuration of the angles between rotary axes and the system.

The Open-Rio V-200 CANopen bus coupler (Photo: Osai)

Integrating CANopen I/O units

The company also offers an I/O head unit with CANopen interface. It supports bit-rates up to 1 Mbit/s. The Open-Rio V-200 bus coupler handles up to eight I/O modules. The individual module can interface digital or analog signals. The Rio modules are snapped on the bus connector, which is securely fastened on a 35-mm rail. A range of modules is available for acquisition of digital and analog signals and for the connection of sensors and actuators. The CANopen bus coupler provides the 24-VDC supply to the electronic of the peripheral modules. The status of all inputs and outputs is indicated by LED and the connection of external cables is done by cage clamps.


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