Rockwell Automation 1794-ID2 U.MNL INCREMENTAL ENCODER - Manual (Page 77)

7–3 Calibrating Your Incremental Encoder Module
Publication 1794ĆUM015B-EN-P - May 2001
Calibration Method 2
Calibration is enabled by input G if GateControl = 3 and Calibrated
= 0. The preset value is copied to the counter register at a positive
edge on input signal Z. The old counter register value is saved in the
store register for evalution.
Calibration direction is determined by CalDirection (0 = positive
direction, 1 = negative direction).
Reset Calibrated, Stored and PresetReached after calibration with
CalReset, StoreReset and PresetReset.
Counter Register
Stored Register
Counter Register
Logic
Z
Preset Register
PresetReached = 1
Stored = 1
CalDirection = Direction
of the latest count pulse
Calibrated = 0
StoreControl = 0
Stored = 0
Calibrated = 1
Logic
G = 1
GateControl = 3
Z