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FM 353 Stepper Drive Positioning Module
6ES7 353-1AH01-8BG0
Basic Principles of Positioning
What is positioning?
Positioning means moving a load to a defined position within a defined time, taking
all influencing forces and torques into account.
Position A Position B
s = pathDx = distance to be traversedF = driving force
Dx
F
s
Fig. 2-1 Principle of a positioning action
What is servo-controlled positioning?
Servo-controlled positioning with a stepper motor is:
S Control of the drive at the right speed while a movement is being performed.
S Specifying a target position and true-to-target axis approach into programmed
target position
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