February 14, 2020
Incremental rotary encoder resolution equals the number of measuring units in one revolution of the shaft, and is measured in PPR (pulses per revolution). Because incremental rotary encoders have A/B outputs, resolution is 4 times the PPR: accounting for 2 edges each on the A channel and B channel. High-resolution...
April 15, 2014
I set up a QR145 optical encoder on a Direct Logic DL06 PLC with some simple Ladder Logic to determine direction based on the A and B incremental inputs. Below is a video of the optical encoder in action: In the PLC I used (DL06), the inputs are filtered, which...
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