A2: Various NC/PLC interface signals and functions
1.2 NC/PLC interface signals
Basic Functions
46
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
The table below shows the functionality of the interface signals in conjunction with the "controller enable".
DB31, ... DBX2.1 (controller enable)
Setting the controller enable closes the machine axis position control loop. The machine axis is in position control
mode.
DB31, ... DBX2.1 == 1
Canceling the controller enable opens the machine axis position control loop and, subject to a delay, the machine
axis speed control loop:
DB31, ... DBX2.1 == 0
Activation methods
The closed-loop controller enable for a machine axis is influenced by:
• NC/PLC interface signal:
- DB31, ... DBX2.1 (controller enable)
- DB31, ... DBX21.7 (pulse enable)
- DB31, ... DBX93.5 (drive ready)
- DB10, DBX56.1 (emergency stop)
• NCK-internal
Alarms that trigger cancellation of the controller enable on the machine axes. The alarm responses are
described in:
References:
/DA/Diagnostics Manual
Canceling the controller enable when the machine axis is at standstill:
• The machine axis position control loop opens
• DB31, ... DBX61.5 == 0 (position controller active)
DB31, ... DBX1.5
DB31, ... DBX1.6
DB31, ... DBX2.1
Function
1
0 (or 1)
1
Position measuring system 1 active
0
1
1
Position measuring system 2 active
0
0
0
"Parking" active
0
0
1
Spindle without position measuring system (speed-
controlled)
1 -> 0
0 -> 1
1
Switchover: Position measuring system 1 → 2
0 -> 1
1 -> 0
1
Switchover: Position measuring system 2 → 1
