Subroutine 42 - Spindle (Spindle Control) - Siemens SINUMERIK 808D Operating Instructions Manual

3.15

Subroutine 42 - SPINDLE (spindle control)

Purpose
Subroutine 42 is used for spindle control, including the spindle braking function. When the
braking function is activated, in the JOG mode press the "SPINDLE LEFT" key or "SPINDLE
RIGHT" key and then press the "SPINDLE STOP" key, after that, the spindle brakes. In the
AUTO mode, the spindle brakes when it changes rotating direction or coasts down. When
the spindle brakes, corresponding output becomes active; meanwhile, the spindle does not
accept rotary command until braking completes.
Local variable definition
Table 3- 7
Name
DELAY
DrvEn
SP_EN
IsBrake
Table 3- 8
Name
SP_brake
SP_LED
Assigned global variables
SP_B_CMD
T11
Relevant PLC machine data
No.
14510 [13]
14510 [19].1
PLC Subroutines Manual
Operating Instructions, 12/2012, 6FC5397-2EP10-0BA0
Inputs
Type Description
WORD Spindle braking duration (unit: 0.1s)
BOOL Drive enable
BOOL Spindle action condition (1: allowed; 0: not allowed)
BOOL Spindle braking function (1: enabled; 0: forbidden)
Outputs
Type Description
BOOL Spindle braking output
BOOL Spindle running state
BOOL Spindle braking command
TIMER Spindle braking timer
Type
BOOL
BOOL
Descriptions of the PLC subroutines
3.15 Subroutine 42 - SPINDLE (spindle control)
Description
Spindle braking duration (unit: 0.1s)
Selection of spindle braking function (1: enabled; 0:
forbidden)
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