HEIDENHAIN TNC 407 (243 020) Technical Manual - Manual (Page 287)

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TNC 407/TNC 415/TNC 425 7 M-functions 01.98
7.5 Selecting K v factors with M105/M106
A second set of Kv factors is selected with M-function M105. These Kv factors are defined in
machine parameters MP1515.x (feed precontrol) and MP1815.x (lag mode). Selecting a higher Kv
factor can selectively enhance the contour accuracy. M105 influences the compensation of reversal
spikes during circular movement. M105 activates the machine parameters MP715 and MP716. The
original set of K
v factors is restored by the M-function M106. M-functions M105/M106 are enabled
by MP7440, Bit 3.
MP7440 Activating M-functions
Entry: %xxxxx
Bit 0 Program halt at M06 0 = program halt at M06
1 = no program halt at M06
Bit 1 Modal cycle call M89 0 = normal code transfer from
M89 at start of block
1 = modal cycle call M89 at end of block
Bit 2 Program run hold with 0 = program run hold until feedback of
M-functions M-function
1 = no program run hold
(no waiting for feedback)
Bit 3 Select K v factors with 0 = function not active
M105/M106 1 = function active
Bit 4 Reduced feed-rate in the 0 = function not active
tools with M103 F... 1 = function active