Pulses Per Revolution - Siemens SIMATIC S5 Manual

Machine Data and their Structure
Note
I
Once the drive has been installed and started up correctly, this machine data
must not be changed, otherwise the wiring of the limit switches and parameters
for the software limit switches must also be changed.
The manual for your power unit specifies the minimum pulse duration required for trouble-free
operation.
The pulse duration can be set in the intervals
1 ILSs minimum pulse duration < 0.5 x period of the maximum frequency
or
1 !Ls < minimum pulse duration <31 vs.
2.5.2 Machine Data for the Stepper Motor
An important characteristic of a stepper motor is the mode "full step or half step". This is usually
a hardware setting on the power unit. This characteristic is not specified a separate machine
data, but is taken into account in the "pulse/revolutions" and "pulse pattern number" machine
data,
This machine data specifies the number of steps of the motor, The number of steps for the full
step mode is usually specified on the rating plate of the motor. If this is not the case, you can cal-
culate the number of steps for the full step mode from the step angle, as follows:
pulses per revolution = 360/step angle
I n the half step mode, you must double this number.
2 - 1 0