Festo Кабели и принадлежности - Manual (Page 328)

7. Description of the commands
7−62
Festo P.BE−SPC200−EN en 0901d
G74 Starting reference travel
ć stepping motor axis; ć permitted in operating modes: Start/Stop, Record Select
Nn G74 X [Y.., Z.., U..]
n Reference travel mode n = 0...4
Effect Starts reference travel of the axis in the mode specified (see Fig. 7/16).
Example N000 G74 X0 ;Accept current position as
;reference point
Remark All positions refer indirectly to reference point.
The exact position of the switching point of the reference switch depends on the
selected reference travel mode.
Mode Description
0 Accepting the current axis position as reference point
1 Reference travel in negative direction to reference
switch (REF) with acceptance as reference point
2 Reference travel in negative direction to negative limit
switch (LIM−) with acceptance as reference point
3 Reference travel in positive direction to reference
switch (REF) with acceptance as reference point
4 Reference travel in positive direction to positive limit
switch (LIM+) with acceptance as reference point