Siemens SINUMERIK 840Di Function Manual page 680

Detailed Description
2.11 Subroutine call with M, T, and D functions
Example:
1. Activate RESET setting on RESET:
2. Transformation remains active on RESET/part program start:
3. Tool length compensation remains active on RESET/part program start:
4. Active plane (Bit 4) and settable frame (Bit 5) remain active after RESET and are reset on
2.11 Subroutine call with M, T, and D functions
2.11
2.11.1 Replacement of auxiliary functions with subroutines
Function
The M, T, and D auxiliary functions can be replaced with subroutines:
• M functions (switching operations)
• T functions (tool selection)
• D functions (tool offset selection)
2-144
MD20110 = 'H01' (Bit 0)
MD20112 = '0'
MD20110 = 'H81' (Bit 0 + Bit 7)
MD20112 = '0'
MD20110 = 'H41' (Bit 0 + Bit 6)
MD20112 = '0'
part program start:
MD20110 = 'H31' (Bit 4 + Bit 5)
MD20112 = '30'
Note
for bit 5 and bit 6:
If MD20110/MD20112 are parameterized so that tool length compensation or a frame is
active on a part program start/MDA start, the first programming of the axes must use
absolute measurements (because of the offset behavior).
Exception: With MD42442/MD42440 the offset behavior for G91 is suppressed.
Mode Group, Channel, Program Operation, Reset Response (K1)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0