Spindle Control - Siemens SINUMERIK 840D sl Commissioning Manual

11 Miscellaneous
11.3

Spindle control

11.3 Spindle control
End of program
Direction of
rotation
11-170
For configuration of the spindle control please refer to:
References: /FB1/, Description of Functions, Basic Machine, Spindles (S1)
ShopTurn distinguishes between M2/M30 (end of a ShopTurn program) and the
M function set in MD 10714 $MN_M_NO_FCT_EOP (end of a program created
in "Manual" or "MDI" mode).
Setting MD 35040 $MA_SPIND_ACTIVE_AFTER_RESET=2 causes the NCK
to switch off the spindle in response to M2/M30 but not in response to the M
function programmed in MD 10714 $MN_M_NO_FCT_EOP.
One of the purposes of this functionality is to allow continuous starting of the
spindle in manual mode (e.g. for scratching).
ShopTurn uses the following M functions for end of program:
S
M function from MD 10714 $MN_M_NO_FCT_EOP: End of main program,
spindle continues
S
M2, M30: End of main program and return jump to beginning of program,
spindle stops
S
M17: End of subprogram and return jump to main program, spindle contin-
ues operating
In order to ensure that the rotational direction of the spindle and C axis is cor-
rectly displayed in the ShopTurn interface and executed directly for pro-
grammed ShopTurn functions you must enter a number of mutually coordinated
settings. You must base these settings on the actual direction of rotation of the
spindle/C axis on the machine.
If you want to use functions cylinder surface transformation and end face ma-
chining, start–up must have been correctly performed for the functions. The
following machine data in particular must be correctly set:
24810 $MC_TRACYL_ROT_SIGN_IS_PLUS_1
24860 $MC_TRACYL_ROT_SIGN_IS_PLUS_2
24910 $MC_TRANSMIT_ROT_SIGN_IS_PLUS_1
24960 $MC_TRANSMIT_ROT_SIGN_IS_PLUS_2
In display machine data you stipulate which direction of rotation of the spindle/C
axis is to be displayed for M function M3 in the ShopTurn interface.
MD 9822 $MM_ST_DISPL_DIR_MAIN_SPIND_M3
MD 9823 $MM_ST_DISPL_DIR_SUB_SPIND_M3
MD 9824 $MM_ST_DISPL_DIR_MAIN_C_AX_INV
MD 9825 $MM_ST_DISPL_DIR_SUB_C_AX_INV
The direction of spindle rotation (M3/M4) is assigned to the positive rotational
direction of the C axis via interface signal DB3n.DBX17.6 (where n = index of
the relevant C axis). The bit defines whether M3 and C+ rotate in the same di-
rection (=0) or in opposite directions (=1).
The following settings are possible for the main spindle and the counter–
spindle; the settings for machine data 9822 and 9823 depend on the direction in
which the user views the coordinate axis. The settings for machine data 9824
and 9825 and the interface signal DB3n.DBX17.6 must be observed.
SINUMERIK 840D sl Commissioning Manual CNC: ShopTurn – 11/2006 Edition
© Siemens AG 2006 All Rights Reserved
11/2006