Siemens SINUMERIK 840D Function Manual page 814

S1: Spindles
18.6 Selectable spindles
; Notice: physical spindle 3 has now been assigned twice.
; When programming logical spindles 2 and 3, physical spindle 3
; is always addressed.
; In the basic machine displays, both spindles rotate.
SETMS(2)
; Master spindle = address extension = 2, converted spindle number M3 = 5 is output
; The physical spindle configured with number "3" stops.
M5
GET(S4)
RELEASE(S1)
814
; SD42800 $SC_SPIND_ASSIGN_TAB[0] = 2
; Alarm 16105: logical spindle 4
; cannot be converted
; Channel spindle 1 = physical spindle 5
; is released.
Function Manual, 06/2019, A5E47437747B AA
Axes and spindles