Memory Configuration (S7); Indexing Axes; Signals From Axis/Spindle (Db31 - Siemens SINUMERIK 840D sl Function Manual

DB31, ...
DBX99.1
Special cases, errors, ...
Corresponding to ....
19.15

Memory configuration (S7)

19.15
No signal descriptions required.
19.16

Indexing axes

19.16
19.16.1

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

DB31, ...
DBX76.6 Indexing axis in position
Edge evaluation: No
Signal state 1 or The signal is influenced according to the "Exact stop fine":
edge change 0 → 1 When "Exact stop fine" is achieved, the signal is set.
When exiting "Exact stop fine", the signal is reset.
•
Note:
If the "Exact stop fine" window is reached and the indexing axis is positioned on an indexing
position, the signal is enabled regardless of how the indexing position was reached.
Signal state 0 or •
edge change 1 → 0
•
•
•
•
Signal irrelevant for ... Axes that are not defined as indexing axes:
... MD30500 $MA_INDEX_AX_ASSIGN_POS_TAB = 0
Extended Functions
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
FS (following spindle) active
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)
DB31, ... DBX99.0 (LS active)
Signal(s) updated: Cyclic
The indexing axis is located on an indexing position.
The indexing axis has been positioned with instructions for "Coded Position".
The axis is not defined as an indexing axis.
The indexing axis is traversing:
DB31, ... DBX64.7/64.6 (Travel command+/-) is active.
The indexing axis is located at a position which is not an indexing position.
Examples:
– In JOG mode after abortion of travel movement, e.g. with RESET
– in Automatic mode: indexing axis has, for example, approached a selected position
controlled by an AC or DC instruction
The indexing axis has not been positioned with instructions for coded positions (CAC, CACP,
CACN, CDC, CIC) in automatic mode.
The "Servo enable" signal for the indexing axis has been canceled:
DB31, ... DBX2.1 (Servo enable)
Z2: NC/PLC interface signals
19.15 Memory configuration (S7)
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