Detailed description
2.1 NC/PLC interface signals
Basic logic functions: Various NC/PLC interface signals and functions (A2)
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Function Manual, 11/2006, 6FC5397-0BP10-2BA0
DB31, ... DBX1.3 == 1 (axis- / spindle disable).
The traversing request is maintained. If the axis disable is cancelled when a traversing
request is pending DB31, ... DBX1.3 = 0 the movement is carried out.
Axis disable when machine axis in motion
When machine axis is in motion and NC/PLC interface signal DB31, ... DBX1.3 == 1 the
movement of the machine axis is decelerated to a standstill via the axis-specific brake
characteristics currently active or, if it is part of an interpolated path movement or coupling, it
is decelerated on a path or coupling-specific basis.
The movement is continued if the axis disable is canceled by another pending traversing
request: DB31, ... DBX1.3 = 0.
Spindle disable
The response is determined by the current spindle mode:
•
Control mode: Speed setpoint = 0
•
Positioning mode: See above "Axis disable".
DB31, ... DBX1.4 (follow-up mode)
"Follow-up mode" is only effective in conjunction with the NC/PLC interface signal:
DB31, ... DBX2.1 (servo enable)
DB31, ... DBX2.1 DB31, ... DBX1.4
Function
1
Ineffective
Normal operation (machine axis in closed-loop control
mode)
0
1
Followup
0
0
Hold
Function: Follow-up
During follow-up, the setpoint position of the machine axis is continuously corrected to the
actual position (setpoint position = actual position).
The following interface signals have to be set for the follow-up function:
DB31, ... DBX2.1 = 0 (servo enable)
DB31, ... DBX1.4 == 1 (tracking mode)
Feedback:
DB31, ... DBX61.3 = 1 (follow-up mode active)
Note
When the servo enable is set from follow-up mode, if the part program is active, the last
programmed position is approached again internally in the NC (
REPOSA
: Approach along line
on all axes). In all other cases, all subsequent movements start at the current actual position.
During "follow-up", clamping or zero-speed monitoring are not active.
Summary of Contents for SINUMERIK 840D sl
Page 282: ...Index Basic logic functions Acceleration B2 64 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 388: ...Basic logic functions Travel to fixed stop F1 Function Manual 11 2006 6FC5397 0BP10 2BA0 52 ...
Page 962: ...Index Basic logic functions Emergency Stop N2 20 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 1704: ...Constraints Basic logic functions Spindles S1 94 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 1716: ...Index Basic logic functions Spindles S1 106 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 1996: ...Index Basic logic functions Tool Offset W1 208 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 2150: ...Table of contents Basic logic functions Appendix 4 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 2184: ...Glossary Basic logic functions Appendix 38 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...