Synchronous Mode And Nc/Plc Interface Signals - Siemens SINUMERIK 840D Function Manual

Program code
N65 M0
Note
The axis enable signals can be canceled to interrupt a movement overlaid on the following
spindle (e.g. SPOS). This component of the movement is not affected by IS "NC/PLC interface
signal" DB31, ... DBX31.4 (resynchronization), but is restored by the REPOS operation.
Supplementary condition
IS DB31, ... DBX31.4 (resynchronization) has any effect only if there is a defined offset position
between the following spindle and leading spindle.
This is the case following COUPON with offset positions such as COUPON(...,77) or SPOS,
SPOSA, M19 for the following spindle with a closed coupling..
19.4.3

Synchronous mode and NC/PLC interface signals

Note
During synchronous operation, the effect of the associated interface signal for the leading (LS)
or following spindle (FS) on the coupling must always be considered.
Spindle override (DB31, ... DBB19)
Only the spindle override value of the LS is active in synchronous operation.
Spindle disable (DB31, ... DBX1.3)
LS
Axes and spindles
Function Manual, 06/2019, A5E47437747B AA
FS coupling
0 0 off
0 1 off
1 0 off
1 1 off
0 0 ON
0 1 ON
1 0 ON
1 1 ON
Comment
; (Note tolerances, see above)
Response
Setpoints are output
No setpoint output for FS
No setpoint output for LS
No setpoint output for LS and FS
Setpoints are output
Spindle disable not effective for FS
Spindle disable also effective for FS, no setpoint output
No setpoint output for LS and FS
S3: Synchronous spindle
19.4 Special features
877