Siemens SINUMERIK 840D sl Function Manual page 1060

Z2: NC/PLC interface signals
19.4 Manual and handwheel travel
DB31, ...
DBB64
Bit 7, 6 Plus and minus traverse keys
Signal state 1 or A traverse movement of the axis is to be executed in one or the other direction.
edge change 0 → 1 Depending on the mode selected, the command is triggered in different ways:
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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.
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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 .... DB31, ... DBX4.7 and/or DBX4.6 (traversing key plus and traversing key minus)
DB31, ... DBX64.5 and/or DBX.4 (Traversing request plus and minus)
DB31, ...
DBB65
Bit 0-6 Active machine function 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 machine 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 .... DB31, ... DBB5 (machine function INC1, ..., continuous)
1060
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.
JOG mode:
The travel command is reset depending on the current setting "jog or continuous mode" (DB31,
... DBX4.7 and/or DBX4.6).
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.
DB21, ... DBX25.7 (axes disable) is active.
Signal(s) updated: Cyclic
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
Extended Functions