osp300 : prevent read ahead

[deadlykitten]

hello boys & girls

[ lathe ]

... VRSTT , VLMON , M331 , ...=VDIN[1001] ( or =VDIN[100#], but i have not tested it )
...... M331 is there exactly for this ( buffering prohibit )
...... VDIN[1001] is time based, so it makes sense to act this way
......... what i don't understand is why VRSTT and VLMON also delivers this behaviour does anybody has a clue ?

and there may be other codes, like this :
... G136 M12
... rapid X Z M203 M05 M63
...... about these last 2, i have observed that they prevent read ahead, but i am not sure and i wont dig this, since 1st enumaration is more than enough

[ mill ]

... same codes as on lathe, but without VLMON and M331 ( another "team vs team" )
... also there is a parameter setting : "nc optional para : program buffering : does / does not", which delivers global / permanent behaviour

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please, what are the situations when you need to prevent read ahead ? kindly

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[deadlykitten]

hello after recent trials, i would like to share this updated enumeration :
... lathe : VLMON, M331 , VETF*, VSIO*
... mill : VWKA* , VWKB*, VINP*
... both : VRSTT, common_variable=VDIN[1001]

as a conclusion, buffer prohibiting seems to be delivered by many variables

i have runned trials, because i felt that not only VDIN should prohibit read-ahead, but also VINP* ... and it seems that there are many more

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even if a variable prohibits the buffer, this does not mean that it's value is updated when execution position reaches it

N1 G01 in_position
N2 compensation activated
N3 moving in compensation
N4 compensation deactivated
N5 VSIO* > here : VSIO* wont reflect a position after compensation, but before N2 buffer will be prohibited, but machine wont move as desired

[ buffer prohibit ] and [ variable content update moment ] should be regarded with caution

if in doubts, i recomend VDIN kindly !