Siemens SINUMERIK 840D sl Function Manual page 1069

DB31, ...
DBX98.0
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 ....
DB31, ...
DBX98.2
Edge evaluation: No
Signal state 1 or edge
change 0 → 1
Signal state 0 or edge
change 1 → 0
Special cases, errors, ....
Corresponding to ....
Extended Functions
Function Manual, 01/2008, 6FC5397-1BP10-3BA0
Fine synchronism
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)
Actual value coupling
Signal(s) updated: Cyclic
The actual-value coupling is active as the coupling type between the leading and following
spindles (see MD21310).
Note:
The signal is relevant only for the active following spindle in synchronous operation.
The setpoint coupling is active as the coupling type between the leading and following
spindles (see MD21310).
In the case of faults/disturbances on the following spindle which result in cancellation of the
FS "servo enable", the coupling relationship between the FS and LS is reversed and switched
over to an actual-value coupling internally in the control under certain circumstances.
DB31, ... DBX84.4 (Synchronous mode)
MD21310 $MC_COUPLING_MODE_1 (coupling type in synchr. spindle oper.)
NC/PLC interface signals (Z2)
19.14 Synchronous spindle
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