Linear Axis; Rotary Axis - Siemens SIMATIC S7-300 Manual

9.5 Axis type
Overview
You can select the axis type with machine data item MD8. Choose either of
the following types:

Linear axis

A linear axis moves between two range limits (traversing range min –10
max 10
(MD21, MD22) to form the "working range."
Linear axes have a limited traversing range. The limits are imposed by the:
Fig. 9-3

Rotary axis

With rotary axes, the actual value is reset to "0" after one revolution. Rotary
axes thus have an infinite traversing range.
Fig. 9-4
FM 354 Servo Drive Positioning Module
Linear axis
Rotary axis
9
). The range limits may be bounded by software limit switches
Resolution of the numerical scale
The range covered by an absolute encoder.
Movement
M
Motor
Linear axis
0
9 999
5 000
Rotary axis
Description of Functions
9
,
G
Encoders
9-57