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14 Command Channel (DB 41)
14.4.5 User data for "M19 over several revolutions (incremental spindle position)" function
14.4.5 User data for "M19 over several revolutions (incremental spindle
position)" function
If the "M19 over several revolutions (incremental spindle position)" function is programmed,
the spindle operates in the positioning mode.
In this case, the spindle is not moved to an absolute position, but by a specified
("incremental") distance. This distance can be greater than one revolution. The starting point
is the position at which the spindle was last positioned. Refer to the "Extended Spindle
Functions" Function Manual for the SINUMERIK 880 for further details.
All the data required for the positioning mode are transferred in the user DB. The user data for
the function must be entered in the user data DB in the following format.
Overview of user data for "M19 over several revolutions" function
Feedrate
active
Spindle speed (higher-order component)
Length of user data in words: 8
DW x+1
DW x
Spindle number
DW x+2
DW x+3
DW x+4
DW x+5
DW x+6
DW x+7
Spindle speed (lower-order component)
Incremental path (higher-order component)
Incremental path (lower-order component)
Acceleration time constant
Servo gain factor
Bit 15
Bit 0
Bit
x =
Number of data word containing first parameter of function in user data DB.
Position window
DW x+8
© Siemens AG 1991 All Rights Reserved 6ZB5 410-0HE02
14–15
SINUMERIK 880 (PJ)