Heidenhain: Evaluation Electronics (IK 220)

Evaluation Electronics for Metrological Applications

Evaluation Electronics for metrological applications offer numerous functions for measured data acquisition and statistical evaluation of measured values.

QUADRA-CHEK evaluation electronics for profile projectors, measuring microscopes, 2-D and video measuring machines as well as CMMs measure points on 2-D contours, depending on the version either automatically or manually by crosshairs, by optical edge detection or by video camera with real-time display of the live image and integrated image processing. For 3-D contours, such as planes, cylinders, cones and spheres, the measurement points are saved by probing with a touch probe.

In the optional CNC version, they also operate as full-fledged controls for axis positioning and can automatically execute measuring programs.

IK 220 | The evaluation electronics as PC solution

The IK 220 evaluation unit is a PC counter card for two axes. It is inserted directly into a free PCI slot in the computer. The IK 220 is ideal for applications in which the measured-values are to be evaluated directly in the PC.

Design

Two HEIDENHAIN encoders with sinusoidal current signal ( 11 µAPP), sinusoidal voltage signal ( 1 VPP), EnDat 2.1 or SSI interface can be connected to the IK 220. External latch inputs/outputs and the output of ( 11 µAPP) measured value signals can be realized by using additional slot covers (accessory).

Functions

The IK 220 subdivides the periods of sinusoidal encoder signals up to 4096-fold for measured-value generation. They are called and stored either by using external latch inputs or by software.

The IK 220 features an integrated measured value memory. A total of up to 8192 measured values can be stored in the buffer and downloaded in a single block.

The measured values are further processed in the PC by programs created by the operator. To demonstrate the PC counter card’s capabilities, examples of such programs and driver software for Windows 2000/XP/Vista/7 (32/64 bit) are supplied with the card.