Zero Offset Absolute (Mode 12) - Siemens SIMATIC S5 Manual

Executing Machining Programs
BA 6 (incremental approach absolute), 3000 mm, start
The axis travels to the absolute position 3000 mm and stops. The "finished" message is set.
N02 X3000 F2500 is entered in the second statement (N2).
6A 11 (teach-in off), start]
Machining program 7 is completed and the teach-in mode switched off. The statement N3 M02 is
appended to machining program 7 to indicate the end of the program.
The complete example appears as follows:
X1258.250 F2500
N2
X3000.000 F2500
N3
In the machining program, absolute distance specifications is the default. For a rotary axis these
are approached via the shortest route when executing a machining program generated in this
way, If you wish to change these presets or speeds or add further G or M functions, you can do
this easily with COM247. Output the generated machining program from the module, edit the pro-
gram and then store it again on the IP247.
4.3.5

Zero Offset Absolute (Mode 12)

When you start the mode "zero offset absolute", the current actual position of the axis is as-
signed a new coordinate. This means that the whole coordinate system including the reference
point coordinate and the software limit switches or traversing range limits are transformed. A tra-
versing movement does not take place. The new coordinate for the current position must be
transferred with the start of the mode. It is then displayed as the actual value.
The coordinate required as the transfer parameter for the mode must not exceed the maximum
range (+/-1 00 m; +/-10000 inches; +/-100000 degrees). Greater values cause the mode to be
terminated and the error message "illegal dist. spec." is displayed. The displacement of the
coordinate system must be such that all the new coordinates still lie within the permitted range,
This is checked by the module, and if the coordinates are outside the range, the mode is termi-
nated and the error message "traversing range exceeded" is displayed.
Zero offsets can be stored in the machine data (zero offset 1...4) and called in the machining pro-
grams (=> Section 2.5.5.2 "Zero Point Offset"). These bring about an additional displacement of
the coordinates. At the end of a machining program, the offsets executed during the program are
tive",
4 - 2 8
: approach position 1258.250 at speed 2500 mm/min
: approach position 3000000 at speed 2500 mnlmin
: final statement, program end