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

2.2.3

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

DB31, ...
DBX2.3 Clamping in progress
Edge evaluation: no
Signal state 1 or Clamping in progress.
edge change
The clamping monitoring function is activated.
0 → 1
Signal state 0 or Clamping completed.
edge change
The clamping monitoring function is replaced by the standstill (zero speed) monitoring.
1 → 0
Corresponding to .... MD36050 $MA_CLAMP_POS_TOL (Clamping tolerance)
DB31, ...
DBX3.6 Velocity/spindle speed limitation
Edge evaluation: no
Signal state 1 or The NCK limits the velocity/spindle speed to the limit value set in the machine data:
edge change MD35160 $MA_SPIND_EXTERN_VELO_LIMIT
0 → 1
Signal state 0 or No limitation active.
edge change
1 → 0
Corresponding to .... MD35100 $MA_SPIND_VELO_LIMIT (max. spindle speed)
SD43220 $SA_SPIND_MAX_VELO_G26 (prog. spindle speed limiting G26)
MD43230 $SA_SPIND_MAX_VELO_LIMIT (prog. spindle speed limiting G96/G961)
DB31, ...
DBX12.0 - DBX12.1 Hardware limit switches plus and minus
Edge evaluation: no
Signal state 1 or A switch can be mounted at each end of the travel range of a machine axis which will cause a
edge change signal "hardware limit switch plus or minus" to be signaled to the NC via the PLC if it is actuated.
0 → 1
If the signal is recognized as set, alarm 021614 "hardware limit switch + or -" is output and the axis
is decelerated immediately.
The braking/deceleration type is defined using the machine data:
MD36600 $MA_BRAKE_MODE_CHOICE (braking behavior at the hardware limit switch)
If the controller enable is withdrawn at the same time as the "hardware limit switch" signal, then the
axis responds as described in Chapter A2 ("various interface signals").
Signal state 0 or Normal condition - a hardware limit switch has not been actuated.
edge change
1 → 0
Corresponding to .... MD36600 $MA_BRAKE_MODE_CHOICE (deceleration behavior when the hardware limit switch
responds)
Basic logic functions: NC/PLC interface signals (Z1)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
Signal(s) updated: cyclic
Signal(s) updated: cyclic
Signal(s) updated: cyclic
Detailed Description
2.2 Axis monitoring, protection zones (A3)
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