PU202 is a level converter that converts incremental HTL pulses (10 ... 30 VDC) into a differential TTL and RS422 format (including inverted signals). At the same time, the device is able to convert various rotation information into the standard A, B, with 2 x 90° phase shift, as required by most end devices.

Thus, for example, some encoder systems or PLC positioning cards provide single-track pulse information and a statically applied rotation information. Other systems use two separate lines to provide forward and reverse pulses. The PU202 level converter is capable of converting such position-direction information into a corresponding phase-offset A / B information. The device has no potential separation.