Siemens SINUMERIK 840D sl Function Manual page 1048

Z2: NC/PLC interface signals
19.4 Manual and handwheel travel
DB21, ...
DBB40, 46, 52
Bit 7, 6 Plus and minus travel commands (for geometry axis)
Signal state 0 or A travel command in the relevant axis direction has not been given or a traverse movement has
edge change 1 → 0 been completed.
•
•
•
Application To release clamping of axes with clamping (e.g. on a rotary table).
example(s)
Note:
If the clamping is not released until the travel command is given, these axes cannot be operated
under continuous path control!
Corresponding to .... DB21, ... DBX12.7 and/or DBX12.6 ff
(Traverse key plus and traverse key minus for geometry axis)
DB21, ... DBX 40, 46, 52 Bit 5 (Traversing request plus/minus)
DB21, ...
DBB41, 47, 53 Active machine function for geometry axis (1, 2, 3)
Bit 0-6 INC1, ..., continuous
Edge evaluation: No
Signal state 1 or The PLC interface receives a signal stating which JOG mode machine function is active for the
edge change 0 → 1 geometry axes.
The reaction to actuation of the traverse key or rotation of the handwheel varies, depending on
which machine function is active.
Signal state 0 or The machine function in question is not active.
edge change 1 → 0
Corresponding to .... DB21, ... DBB13 ff (machine function INC1, ..., continuously for geometry axis)
DB21, ...
DBB332, 336, 340
Bit 5, 4 Plus and minus traversing request (for orientation axis)
Edge evaluation: No
The signal is the same as the travel command signal in the earlier version.
Signal state 1 or •
edge change 0 → 1
•
•
1048
JOG mode:
The travel command is reset depending on the current setting "jog or continuous mode" (see
DB21, ... DBX12.7 or DBX12.6 ff).
While traversing with the handwheel.
REF mode:
When the reference point is reached.
AUT/MDA mode:
The program block has been executed (and the next block does not contain any coordinate
values for the axis in question).
Cancel by "RESET", etc.
NST DB21, ... DBX25.7 (axes disable) is active.
Signal(s) updated: Cyclically
Signal(s) updated: Cyclically
JOG mode:
With the plus or minus traverse key.
REF mode:
With the traverse key that takes the axis to the reference point.
AUT/MDA mode:
A program block containing a coordinate value for the axis in question is executed.
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
Extended Functions