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Output of Auxiliary Functions to PLC
10.3
Description of Auxiliary Functions
M function
Application
The M functions can be used to activate various switching actions on the
machine via the part program.
Scope of functions
z
5 M functions per part program block are possible.
z
Value range of M functions: 0 to 99; integer
z
A minor part of the M functions is assigned by the control manufacturer a
fixed functionality (see User Manual “Operation and Programming”). The
remaining part is available to the machine manufacturer for free use.
T function
Application
The T function is used to load the appropriate tool for a certain machining
section from the PLC. Whether the tool change is to be carried out directly by
means of the T command or a following M command can be set via machine
data (see User Manual “Operation and Programming”).
The programmed T function can be interpreted either as a tool No. or as a tool
magazine position No.
Scope of functions
1 T function per part program block is possible.
Special property
T0 is reserved for the following function: to remove the currently active tool
from the tool holder without loading a new tool.
SINUMERIK 802S/C base line
Description of Functions
10-3