A2: Various NC/PLC interface signals and functions
1.2 NC/PLC interface signals
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
53
1.2.9 Signals from axis/spindle (digital drives)
DB31, ... DBX92.1 (ramp-function generator disable active)
The drive signals back to the PLC that ramp-function-generator fast stop is active. The drive is thus brought to a
standstill without the ramp function (with speed setpoint 0).
DB31, ... DBX93.0, 1, 2 (active drive parameter set A, B, C)
The drive module sends this checkback to the PLC to indicate which drive parameter set is currently active. With
bit combination A, B, C, eight different drive parameter sets can be selected by the PLC.
DB31, ... DBX93.3, 4 (active motor A, B)
The drive module (MSD) sends this checkback to the PLC to indicate which of the 4 motor types or motor
operating modes is active.
The following selections can be made on the main spindle drive:
• Star mode (A=0, B=0)
• Delta mode (A=1, B=0)
DB31, ... DBX93.5 (DRIVE ready)
Checkback signal indicating that the drive is ready. The conditions required for traversing the axis/spindle are
fulfilled.
DB31, ... DBX93.6 (integrator n-controller disabled)
The speed-controller integrator is disabled. The speed controller has thus been switched from PI to P controller.
DB31, ... DBX93.7 (pulses enabled)
The pulse enable for the drive module is available. The axis/spindle can now be traversed.
DB31, ... DBX94.0 (motor temperature prewarning)
The motor temperature has exceeded the warning threshold. If the motor temperature remains at this level, the
drive will be stopped after a defined time (drive MD) and the pulse enable removed.
DB31, ... DBX94.1 (heatsink temperature prewarning)
The heatsink temperature has exceeded the warning threshold. The pulse enable will be removed for the drive
module in question after 20 seconds.
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