Spindle Control - Siemens SINUMERIK 840DE sl Commissioning Manual

11/2006
11.3

Spindle control

End of program
Keys
© Siemens AG 2006 All Rights Reserved
SINUMERIK 840D sl Commissioning Manual CNC: ShopMill – 11/2006 Edition
The ShopMill spindle control features special properties.
To configure the spindle, see
References: /FB1/, Description of functions of basic machine: Spindles (S1)
ShopMill distinguishes between M2/M30 (program end of a ShopMill program)
and the M function (program end of a program created in the operating mode
"Manual" or "MDA") defined in the MD 10714 $MN_M_NO_FCT_EOP.
MD 35040 $MA_SPIND_ACTIVE_AFTER_RESET=2 causes the NCK to switch
off the spindle for M2/M30, while it does not do so for the M function defined in
MD 10714 $MN_M_NO_FCT_EOP.
This functionality is required, among other things, to be able to start the spindle
in manual operation (e.g. for scraping).
ShopMill 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
If a manual spindle control must be implemented using the keys of the machine
control panel, it can be accomplished using the following interface signals in the
spindle data block:
DB3x.DBX30.0 spindle stop
DB3x.DBX30.1 spindle start CW rotation
DB3x.DBX30.2 spindle start CCW rotation
The spindle can be started and stopped if the channel status is reset
(DB21.DBX35.7=1) or the channel status is "interrupted" (DB21.DBX35.6=1)
and the program status is "interrupted" (DB21.DBX35.3=1).
Note
If the spindle must be stopped when the program is running, then the "Feed
Stop/Spindle Stop" interface signal must be set in the user PLC
(DB3x.DBX4.3).
11 Miscellaneous
11.3 Spindle control
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