Decoded M Signals (M0 To M99) - Siemens SINUMERIK 808D ADVANCED Parameter Manual

PLC user interface
6.6 Auxiliary functions transfer from NC channel
6.6.2

Decoded M signals (M0 to M99)

Note
The signals are output for the duration of a PLC cycle.
DB2500 M functions from NCK channel [r]
NCK -> PLC interface
Byte Bit 7
1000
M7
1001
M15
1002
M23
...
1012
1013
1014
1015
As the PLC user, you must generate basic functions yourself from the dynamic M functions.
1)
The basic program decodes dynamic M functions (M0 to M99).
2)
6.6.3 Transferred T functions
DB2500 T functions from NCK channel [r]
NCK -> PLC interface
Byte Bit 7
2000
2004
2005
2006
2007
464
1) 2)
Bit 6 Bit 5
M6 M5
M14 M13
M22 M21
Bit 6 Bit 5
Bit 4 Bit 3
Dynamic M functions
M4 M3
Dynamic M functions
M12 M11
Dynamic M functions
M20 M19
...
Dynamic M functions
M99
Bit 4 Bit 3
T function 1 (DINT)
Parameter Manual, 08/2015, 6FC5397-8EP40-0BA1
Bit 2 Bit 1
M2 M1
M10 M9
M18 M17
M98 M97
Bit 2 Bit 1
Parameter Manual
Bit 0
M0
M8
M16
M96
Bit 0