The main effect of the abort positioning instruction is that in some machine tools, when we give the abort signal can walk to the distance we set, for example, if the mechanical structure needs to use the sensor to determine the position to go, you can use the abort positioning instruction to do, when the induction gives the abort signal after the motor will walk to the distance you set before stopping, in fact, it is appropriate to have the same compensation effect.
Abort Location Command Format:
Here we will explain to us what the input pulse number means after aborting: assuming that the workbench is at the origin of the machine, at this time when we issue the abort instruction, and then the PLC will start to count the number of pulses we input is the output pulse number after aborting, and when the pulse number is finished, the motor will stop immediately.
Abort positioning instruction fulfillment action: when aborting positioning instruction is performed, the motor rolls, and the workbench runs to move in the specified direction at the speed V of the output pulse frequency; At the moment when the input signal Xi=ON is aborted, the specified number of pulses is output and then stopped. After the instruction is fulfilled, the flag M8029 is set to ON, and the positioning performance is suspended.
Pay attention:
If the abort input is ON during the acceleration process, the number of output pulses ≥ the number of pulses required for acceleration + the number of pulses required for deceleration
When the instruction is fulfilled, the abort input action is appropriate for the performance of the DRVI relative positioning instruction.
During the instruction fulfillment process, when the instruction input condition is OFF, the motor slows down and stops.
When the forward and reverse limit signs are ON, the motor slows down and stops, and the command is abnormally fulfilled
Flag M8329=ON.
Abort positioning command abort signal input confirms:
The positioning command TBL is a table invocation command, which invokes the positioning instruction that has been set in the table, and the positioning instruction that can be set in the table is as follows:
1) Fixed-length abort instruction DVIT
2) Relative positioning instruction DRVI
3) Affirmatively locate the directive DRVA
4) Variable speed pulse output function command PLSV
That is to say, the fixed-length abort instruction just meets the requirements, if we use the form to call the instruction, we can reduce the cumbersomeness in the design, so that the efficiency of our programming is greatly improved!
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