Siemens SINUMERIK 840D sl Function Manual page 908

Z2: NC/PLC interface signals
19.3 Manual and Handwheel Travel (H1)
DB21, ...
DBX40.4-5,
DBX46.4-5,
DBX52.4-5 Plus or minus traversing request for geometry axis (1, 2, 3)
Signal state 0 There is no traversing request available for the geometry axis.
Corresponding to ... DB21, ... DBX40.7 or DBX40.6
DB21, ... DBX46.7 or DBX46.6
DB21, ... DBX52.7 and/or DBX52.6 (traversing command plus and minus)
DB21, ...
DBX40.7-6,
DBX46.7-6, Traversing command plus and minus for geometry axis (1, 2, 3)
DBX52.7-6
Edge evaluation: No
Description The output of the drive commands depends on:
MD17900 $MN_VDI_FUNCTION_MASK, bit 0
Signal state 1 Request to traverse the geometry axis in the corresponding direction.
● Bit 6 = minus drive command
● Bit 7 = plus drive command
The response to a drive command depends on the current operating mode:
● JOG mode:
● REF mode:
● AUTOMATIC/MDI mode:
Signal state 0 There is no traversing request available for the geometry axis.
Application exam‐ Releasing the axis clamp when the traversing command is identified.
ple(s)
Note
For axes on which the clamping is not released until a drive command is detected, continuous-path
mode (G64) is not possible.
Corresponding to ... DB21, ... DBX12.7 or DBX12.6 ff (traversing key plus and minus for geometry axis)
DB21, ... DBX 40, 46, 52 Bit 5 (traversing request plus/minus)
908
Signal(s) updated: Cyclically
Bit 0 Meaning
0 The drive commands are already output when a traversing request is active.
1 The drive commands are only output when the axis traverses.
Traverse the axis in the traversing direction plus or minus.
Traverse the axis only in the direction of the reference point.
A block containing a position for the axis is executed.
Function Manual, 10/2015, 6FC5397-1BP40-5BA3
Extended Functions