Other Parameters - Siemens SIMATIC S5 Manual

The zero offsets are called in machining programs using functions G54 to G57 and are cancelled
with G53. They can only be enabled as alternatives, If an offset has already been executed with
the zero offset modes (=> Part 4 "Functions"), the offsets activated by G54 to G57 are added to
those already existing. For this reason, a check is made during the execution of a machining pro-
gram to ensure that the activation of a zero offset does not exceed the maximum range. If the
maximum range would be exceeded by the offset, the machining program is stopped.
2.5.6 OtherParameters
This section discusses the following parameters:
—
number of the machine data record,
—
module number,
—
axis (number), for which the machine data record is valid,
—
machine data errors,
A DB number from 0...255 can be assigned to a machine data record.
The left byte (DL n+2) must always have the bit pattern shown above.
Each positioning module can control three axes, with the fixed designation axis 1, axis 2 and axis
3. Each module is also assigned a module number between O and 99. This information uniquely
identifies an axis, To be able to assign a machine data record to an axis, this must contain both
values,
2 - 2 8