Siemens SINUMERIK 840D Function Manual page 491

$MC_AXCONF_MACHAX_USED[2]=3
$MN_AXCONF_MACHAX_NAME_TAB[2] = "Z1"
$MA_SPIND_ASSIGN_TO_MACHAX[AX3] = 0
$MA_IS_ROT_AX[AX3] = FALSE
; *************** Axis 4, "A"
$MC_AXCONF_CHANAX_NAME_TAB[3] = "A"
$MC_AXCONF_MACHAX_USED[3]=4
$MN_AXCONF_MACHAX_NAME_TAB[3] = "A1"
$MA_SPIND_ASSIGN_TO_MACHAX[AX4]=0
$MA_IS_ROT_AX[AX4] = TRUE
$MA_ROT_IS_MODULO[AX4] = TRUE
; *************** Axis 5, "B"
$MC_AXCONF_CHANAX_NAME_TAB[4] = "B"
$MC_AXCONF_MACHAX_USED[4]=5
$MC_SPIND_DEF_MASTER_SPIND = 1
$MN_AXCONF_MACHAX_NAME_TAB[4] = "B1"
$MA_SPIND_ASSIGN_TO_MACHAX[AX5] = 1
$MA_IS_ROT_AX[AX5] = TRUE
$MA_ROT_IS_MODULO[AX5] = TRUE
; ************** Axis 6, "C"
$MC_AXCONF_CHANAX_NAME_TAB[5] = "C"
$MC_AXCONF_MACHAX_USED[5]=6
$MN_AXCONF_MACHAX_NAME_TAB[5] = "C1"
$MA_SPIND_ASSIGN_TO_MACHAX[AX6] = 0
$MA_IS_ROT_AX[AX6] = TRUE
$MA_ROT_IS_MODULO[AX6] = TRUE
; ************** Axis 10, "C99"
$MC_AXCONF_CHANAX_NAME_TAB[9] = "C99"
$MC_AXCONF_MACHAX_USED[9]=10
$MA_SPIND_ASSIGN_TO_MACHAX[AX10] = 0
$MA_IS_ROT_AX[AX10] = TRUE
$MA_ROT_IS_MODULO[AX10] = TRUE
Axes and spindles
Function Manual, 06/2019, A5E47437747B AA
M3: Coupled axes
14.4 Electronic gear (EG)
491