Brief Description
1.2 Overview of auxiliary functions
Auxiliary Function Output to PLC (H2)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
1-3
1.2 1.2 Overview of auxiliary functions
M functions
M (special function)
Address extension Value
Value range Meaning Value range Type Meaning Number
8)
0 (implicit) - - - Up to 8 digits INT Function 5
Remarks:
- - -
Value range Meaning Value range Type Meaning Number
8)
1 - 12 Spindle number 1 – 99 INT Function 5
Remarks:
Example: "Spindle stop" for 2nd spindle of the channel: M2=5.
The master spindle of the channel is addressed if no an address extension is specified.
Value range Meaning Value range Type Meaning Number
8)
0 - 99 Any 2147483647 INT Function 5
Remarks:
User-specific M function
Application
Controlling machine functions in synchronism with the part program.
General remarks
• The following M functions have a predefined meaning: M0, M1, M2, M17, M30
M3, M4, M5, M6, M19, M70, M40, M41, M42, M43, M44, M45.
• For each M function (M0 - M99), there is a dynamic signal at the NC/PLC interface that
indicates the validity (new output) of the M function. In addition, 64 further signals can be
assigned for user M functions.
References
/FB/ Description of Function Basic Machines; PLC Basic Program (P3)
• For subroutines, there are machine data in which you can set whether the M function for
the end of part program (M17, M2, and M30) will be output to the PLC:
MD20800 $MC_SPF_END_TO_VDI
• For the predefined M function M40 – M45, only limited redefinition of the output
specification is possible.
• The predefined auxiliary functions M0, M1, M17, M30, M6, M4, M5 cannot be redefined.
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