Siemens SINUMERIK 840D sl Function Manual page 1628

Detailed Description
2.1 Spindle modes
• WAITS instructions are used for coordination in the part program:
WAITS
WAITS[n]
WAITS[n, m,...,q]
position(s) programmed with
SPOSA
M5
M3, M4 (speed control mode)
Special cases
• Tolerance for spindle speed:
• Missing enable signals:
18
If the machine data setting is:
MD35150 $MA_SPIND_DES_VELO_TOL = 0
the NC/PLC IS:
DB31...;DBX83.5 (Spindle in setpoint range)
is always set to 1.
WAITS is terminated as soon as the spindle has reached the setpoint-side target after a
change in speed or direction (M3/M4).
If WAITS waits for the "Spindle in setpoint range" signal in speed control mode and the
spindle stops or fails to rotate because an enable signal (axial feed enable, controller,
pulse enable, etc.) is missing, the block is not terminated until the "Spindle in setpoint
range" signal is active, once enable signals are being received again.
for main spindle (master spindle)
for main and other spindles
for several spindles up to the maximum number of spindles
The control waits before executing subsequent blocks until:
are reached.
The spindle is stationary.
NC/PLC IS:
DB31, ... DBX61.4 (Spindle stationary)
taking the tolerance:
MD36060 $MA_STANDSTILL_VELO_TOL into account.
WAITS is terminated and the next block loaded when the first
occurrence of the signal is detected.
The speed is in the setpoint range.
NC/PLC IS:
DB31, ... DBX83.5 (Spindle in setpoint range)
Tolerance:
MD35150 $MA_SPIND_DES_VELO_TOL
WAITS is terminated and the next block loaded when the first
occurrence of the signal is detected.
This function of WAITS applies in the programmed channel.
WAITS can be used to wait for all spindles known to this channel,
although spindles may also have been started in other channels.
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
Basic logic functions: Spindles (S1)