Siemens SINUMERIK 840D sl Function Manual page 940

Z2: NC/PLC interface signals
19.13 Synchronous Spindles (S3)
DB31, ...
DBX84.4
Signal state 0 or edge
change 1 → 0
Corresponding to ....
DB31, ...
DBX98.0
Edge evaluation: No
Signal state 1 or edge
change 0 → 1
Signal state 0 or edge
change 1 → 0
Application example
Corresponding to ....
DB31, ...
DBX98.1
Edge evaluation: No
Signal state 1 or edge
change 0 → 1
Signal state 0 or edge
change 1 → 0
Application example
Corresponding to ....
940
Synchronous mode
The spindle is not operated as the following spindle in "synchronous mode".
When the coupling is deactivated (deselection of synchronous operation), the following spindle
is switched to "open-loop control mode".
DB31, ... DBX98.0 (Synchronism fine)
DB31, ... DBX98.1 (Synchronism coarse)
DB31, ... DBX99.1 (FS active)
Fine synchronism
Signal(s) updated: Cyclic
The positional deviation or velocity difference between the following spindle and its leading
spindle is within the "Fine synchronism" tolerance band.
The positional deviation or velocity difference between the following spindle and its leading
spindle is not within the "Fine synchronism" tolerance band.
Note:
The signal is relevant only for the following spindle in synchronous operation.
Clamping of workpiece in following spindle on transfer from the leading spindle: Clamping of
the workpiece is not initiated by the PLC user program until the spindles are sufficiently
synchronized.
DB31, ... DBX84.4 (Synchronous mode)
MD37210 $MA_COUPLE_POS_TOL_FINE (threshold value for "fine synchronism")
MD37230 $MA_COUPLE_VELO_TOL_FINE ("fine" speed tolerance)
Coarse synchronism
Signal(s) updated: Cyclic
The positional deviation or velocity difference between the following spindle and its leading
spindle is within the "Coarse synchronism" tolerance band.
Note:
The signal is relevant only for the following spindle in synchronous operation.
The positional deviation or velocity difference between the following spindle and its leading
spindle is not within the "Coarse synchronism" tolerance band.
Clamping of workpiece in following spindle on transfer from the leading spindle: Clamping of
the workpiece is not initiated by the PLC user program until the spindles are sufficiently
synchronized.
DB31, ... DBX84.4 (Synchronous mode)
MD37200 $MA_COUPLE_POS_TOL_COARSE (threshold value for "coarse synchronism")
MD37220 $MA_COUPLE_VELO_TOL_COARSE ("coarse" speed tolerance)
Function Manual, 10/2015, 6FC5397-1BP40-5BA3
Extended Functions