Festo Контроллеры двигателя CMMS-ST - Manual (Page 78)

3. Product description
78 Festo.P.BE-CMMS-ST-G2-HW-EN 1008NH
For linear axes:
For rotational axes:
The function Endless Positioning is selected by checking “Work stroke / positioning range
unlimited”. The selection is currently supported only for user-defined linear and rotating
axes.
Note
• Hardware limit switches can be used with unlimited axes only
for the homing run.
• Software limit stops are deactivated.
3.5.18 Relative positioning records
When using relative positioning records, observe the following.
The controller is a 16-bit controller. That means, the controller calculates internally with
65536 increments per revolution. The controller calculates with whole numbers (integers).
For positioning records that do not have a whole number as the result, the controller
rounds up to the next whole number. This can result in deviations with endless
positioning.
Example: rotary indexing table
4 positions. (90°) 65536:4= 16384 ----> Integer
6 positions. (60°) 65536:6= 10922,666 ----> The controller positions at 10923.