Incremental encoders generate information about position, angle, and rotation counts. The resolution is defined by the number of lines or pulses per rotation, which the encoder transmits to the control unit for each rotation. The current position can be determined by the control unit by counting these pulses. A reference run can be necessary when switching on the machine.
BAUMER (ITD21H01 02048 T NI S21SG8 F 14 IP54 019) 1105067, Incremental encoders, ITD21H01 HT, Through hollow shaft ø14 mm, 100…8192 pulses per revolution