Detailed Description
2.1 Various interface signals and functions (A2)
NC/PLC Interface Signals (Z1)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
2-33
DB31, ...
DBX2.1
Controller enable
Edge evaluation: no Signal(s) updated: cyclic
Signal state 1 The position control loop of the axis/spindle is closed; the axis/spindle is in closed-loop control.
Signal state 1 or
edge change
0 → 1
When "controller enable" is set by the PLC user program:
• Position control loop of axis is closed.
• Position actual value is no longer switched to the position setpoint.
• The controller enable of the drive is output.
• The interface signal:
DB31, ... DBX61.5 (position controller active)
is set to 1.
When "controller enable" has been signaled no new actual value synchronization of the axis
(reference point approach) of the axis is necessary if the maximum permissible limit frequency of
the axis measuring system has not been exceeded during follow-up mode.
As a function of the interface signal:
DB31, ... DBX1.4 ( follow-up mode)
it is possible to select whether or not the axis first traverses back to the earlier setpoint position (i.e.
the positional deviation caused by the clamping process is moved through to eliminate the
deviation).
Edge change
1 → 0 or
signal state 0
"Controller enable" will be/is removed:
The procedure for removing "controller enable" depends on whether the axis/spindle or an axis of
the geometry grouping is stationary or traversing at this point in time.
• Axis/spindle stationary:
– Position control loop of axis is opened.
– When IS "Follow-up mode" = 1 the position actual value is switched to the position setpoint
(i.e. the setpoint position is corrected to the actual value position). The position actual value
of the axis/spindle continues to be acquired by the control.
– The controller enable of the drive is removed.
– The interface signals:
DB31, ... DBX61.5 (position controller active)
DB31, ... DBX61.6 (speed controller active)
DB31, ... DBX61.7 (current controller active)
are set to a 0 signal.
• Axis/spindle traverses:
– The axis is stopped with rapid stop.
– Alarm 21612 "VDI signal controller enable reset during movement" is triggered.
– The position control loop of the axis/spindle is opened.
– Independent of the interface signal:
DB31, ... DBX1.4 (follow-up mode)
At the end of braking the position actual value is switched to the position setpoint
(i.e. the setpoint position is corrected to track the actual value position).
The position actual value of the axis/spindle continues to be acquired by the control.
IS "Follow-up mode" is set.
– The interface signals:
DB31, ... DBX61.5 (position controller active)
DB31, ... DBX61.6 (speed controller active)
DB31, ... DBX61.7 (current controller active)
are set to 0.
The axis status cannot be changed again until after RESET.
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