HEIDENHAIN TNC 407 (243 020) Technical Manual - Manual (Page 344)

01.98
TNC 407/TNC 415/TNC 425 13 Hirth coupling 4-219
LBL 371
L D4
> D780 ;MP4210.3 programming accuracy axis 4 for Hirth
= M4 ;== 1 scale graduation cannot be approached
EM
LBL
390 ;convert to absolute amount
PLW ;load ACCU
PSW ;load to data stack
BT K + 31 ;write bit 31 to L accu, bit test
JPF 391 ;0 = positive, jump if accu = 0
PLW ;load ACCU
X K - 1 ;sign
PSW ;write data to data stack
EM
LBL
391 ;jump label
EM