Detailed Description
2.1 NC/PLC interface signals
Various NC/PLC Interface Signals and Functions (A2)
2-8 Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
DB31, ... DBX1.3 (axis/spindle disable)
Axis disable when machine axis is at standstill
If the machine axis is at standstill and NC/PLC interface signal:
DB31, ... DBX1.3 = 1
no traversing request (manual or automatic) is executed. The traversing request is
maintained. If the axis disable is cancelled when a traversing request is pending:
DB31, ... DBX1.3 = 0
the movement is executed.
Axis disable when the machine axis is in motion
If the machine axis is in motion and NC/PLC interface signal:
DB31, to DBX1.3 = 1
the movement of the machine axis is decelerated to standstill following the currently active
axis-specific brake characteristic or, if the axis is part of an interpolated path movement or
coupling, it is decelerated on a path- or coupling-specific basis.
If the axis disable is cancelled while a traversing request continues to be pending:
DB31, ... DBX1.3 = 0
the movement is continued.
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
(servo enable)
DB31, ... DBX1.4
(follow-up mode)
Function
1 Ineffective Normal operation (machine axis in closed-loop control mode)
0 1 Follow-up
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 are required for follow-up mode:
DB31, ... DBX2.1 = 0 (servo enable)
DB31, ... DBX1.4 = 1 (follow-up mode)
Checkback signal:
DB31, ... DBX61.3 = 1 (follow-up mode active)
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