Signals From Axis/Spindle (Db31 - Siemens SINUMERIK 840D sl Function Manual

Z1: NC/PLC interface signals
19.11 Spindles (S1)
DB31, ...
DBX18.6 - DBX18.7 Oscillation direction of rotation counter-clockwise / oscillation direction of rotation clockwise
Edge evaluation: Yes
Edge change 0 → 1 If the interface signal:
DB31, ... DBX18.4 (oscillation by the PLC)
is set, then the direction of rotation for the oscillation speed
can be entered using the two interface signals:
DB31, ... DBX18.6 - DBX18.7 (setpoint direction of rotation counter-clockwise and clockwise).
The times for the oscillation movement of the spindle motor are defined by setting the interface signals
"direction of rotation setpoint counter-clockwise and clockwise" for a corresponding length of time.
Signal irrelevant ... spindle modes other than the oscillation mode
for ...
Application exam‐ Refer to DB31, ... DBX18.4 (oscillation controlled by the PLC)
ple(s)
Special cases, If both of the interface signals are set simultaneously enabled, no oscillation speed is output.
errors, ......
If an interface signal is not set, then an oscillation speed is not output.
Corresponding to ... DB31, ... DBX18.4 (oscillation controlled by the PLC
DB31, ... DBX18.5 (oscillation speed)
19.11.2

Signals from axis/spindle (DB31, ...)

DB31, ...
DBX60.0 Spindle/no axis
Edge evaluation: Yes
Edge change 0 → 1 The machine axis is operated in one of the following spindle modes:
● Open-loop control mode
● Oscillation mode
● Positioning mode
● Tapping without compensating chuck
● Synchronous mode
The interface signals to the axis (DB31, ... DBB12 - DBB15) and from the axis (DB31, ... DBB74 -
DBB81) are invalid.
The interface signals to the spindle (DB31, ... DBB16 - DBB19) and from the spindle (DB31, ... DBB82
- DBB91) are valid.
Edge change 1 → 0 The machine axis is operated as rotary axis.
The interface signals to the axis (DB31, ... DBB12 - DBB15) and from the axis (DB31, ... DBB74 -
DBB81) are valid.
The interface signals to the spindle (DB31, ... DBB16 - DBB19) and from the spindle (DB31, ... DBB82
- DBB91) are invalid.
Application exam‐ If a machine axis is operated alternating as spindle or rotary axis, using the signal it is possible to
ple(s) identify which mode is currently active. Application examples:
● Turning machine: Spindle ↔ C axis
● Milling machine: Spindle ↔ rotary axis for rigid tapping
1642
Signal(s) updated: Cyclically
Signal(s) updated: Cyclically
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions