Switching, Auxiliary And Miscellaneous Functions; M, S, T, H; Miscellaneous Function M - Siemens SINUMERIK 880 Programming Manual

05.91
5 Switching, Auxiliary and Miscellaneous
Functions
5.1

M, S, T, H

The miscellaneous functions contain primarily technological specifications which are not
programmed in the words provided with address letters M, S, and T:
•

Miscellaneous function M

• Spindle speed S
• Tool number T
• Auxiliary function H
Each block can contain up to three M functions, one S function, one T function and one H
function. They are output to the interface control in the following sequence: M, S, T, H.
Whether the function is output before or
If the functions are output during axis movement, the following applies:
If a new value must be active before the axes are traversed, the new function must be written
in the preceding block.
5.2 Miscellaneous function M
Some miscellaneous functions are defined in DIN 66025, Part 2; others are defined by the
machine tool manufacturer.
M00 Programmed stop (unconditional)
Function M00 permits the program to be interrupted, e.g. in order to perform a measurement.
On termination of the measurement, machining can be continued by pressing the "Program
start" key. The information entered is retained. Miscellaneous function M00 is active in all
automatic operating modes. Whether or not the spindle drive is also stopped must be deter-
mined from the specific Programming Guide for each machine. M00 is also active in a block
without position data.
M01 Programmed stop (conditional)
Function M01 is the same as M00 but is active only if the "Programmed stop (M01) active"
function has been activated by means of the softkey or externally via the PLC.
© Siemens AG 1991 All Rights Reserved
SINUMERIK 880, (PG)
during the axis movement is specified
by the machine data.
6ZB5 410-0HD02

5 Switching, Auxiliary and Miscellaneous Functions

5.1 M, S, T, H
5–1