AS5043 10-BIT PROGRAMMABLE MAGNETIC ROTARY ENCODER
Demoboard Operation Manual
Revision 1.1, 04 Jul-06 www.austriamicrosystems.com
Page 11 of 21
Under normal conditions, a properly aligned magnet will result in a reading of less than 32 over a full turn. The
MagINCn and MagDECn indicators will be = 1 when the alignment mode reading is < 32. At the same time, both
hardware pins MagINCn (#1) and MagDECn (#2) will be pulled to VSS. A properly aligned magnet will therefore
produce a MagINCn = MagDECn = 1 signal throughout a full 360° turn of the magnet.
Stronger magnets or short gaps between magnet and IC may show values larger than 32. These magnets are still
properly aligned as long as the difference between highest and lowest value over one full turn is at a minimum.
With AS5043 date code >=612xxx switching from alignment mode to normal operation can be done by software so
both values can be read one after another.
When clicking on the “Enable Alignment” button the alignment reading is displayed on the right hand side
(see Figure 9).
When checking “Cyclic Update” the position and angle of the encoder is displayed (see Figure 10Figure 9)
additionally to the alignment. The additional reading of the position will influence the performance of the alignment
reading.
Figure 10: Alignment with Cyclic Update
All functions of the AS5043 can still be used, even when the magnet is misaligned. However, the linearity error will
increase with increased misalignment.
3.4
Help Files
After installation of the software the help file AS50xx.chm can be found in the installation directory. It can be
opened by double-clicking or clicking one of the Help-Buttons of the application.
