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Siemens SINUMERIK 840D sl Function Manual page 1648

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Z1: NC/PLC interface signals
19.11 Spindles (S1)
DB31, ...
DBX84.7
Active spindle mode: Open-loop control mode
Edge evaluation: Yes
Edge change 0 → 1
The spindle is in control mode with the following functions:
● Spindle direction of rotation specification M3/M4 or spindle stop M5
● M41...M45, or automatic gear stage change M40
Corresponding to ...
DB31, ... DBX84.6 (spindle operating mode, oscillation mode)
DB31, ... DBX84.5 (spindle operating mode, positioning mode)
DB31, ...
DBX85.5
Spindle in position
Edge evaluation: Yes
The interface signal is processed exclusively with the function spindle positioning. This includes:
● SPOS, SPOSA and M19 in the part program
● SPOS and M19 in synchronized actions
● Spindle positioning, using FC18
● Spindle positioning via PLC interface (DB31, ... DBX30.4)
Edge change 0 → 1
Requirement for the output of the DB31, ... DBX85.5 signal (spindle in position) is reaching the "Exact
stop fine".
DB31, ... DBX60.7 (exact stop fine) = 1
Additionally, the last programmed spindle position must have been reached on the setpoint side.
If the spindle is already at the programmed position after a positioning, then signal DB31,... DBX85.5
(spindle in position) is set.
Edge change 1 → 0
When signal DB31, ... DBX60.7 is withdrawn (exact stop fine), then signal DB31, ... DBX85.5 (spindle
in position) is also always reset.
Application exam‐
Spindle in position for the tool change
ple(s)
If the machine operator interrupts the tool change cycle (e.g. with NC stop, NC stop axis plus spindle,
mode group stop, etc.), then NC/PLC interface signal DB31, ... DBX85.5 can be used to query that
the position has been reached with which the spindle should enter the tool changer.
Corresponding to ...
DB31, ... DBX60.7 (exact stop fine)
DB31, ...
DBB86
M function for spindle
Edge evaluation: Yes
Edge change 0 → 1
From the NCK one of the following M functions: M3, M4, M5, M19, M70 is output to the PLC.
The output is performed via: See "Corresponds to ..." below
Corresponding to ...
DB31, ... DBB86 - DBB87 (M function for spindle), axis-specific
DB21, ... DBB58, DBB68 - DBB97 (M function for spindle), channel-specific
1648
Signal(s) updated: Cyclically
Signal(s) updated: Cyclically
Signal(s) updated: Cyclically
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions

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