Basic configuration and test of Beifu twincat3 NCI in NC axis interface

This article explains TwinCAT NCI stay System manager Basic configuration and testing in .

1. Operation process
   1.1. TwinCAT NCI Basic overview
   1.1.1. The functional composition of the control
   TwinCAT NCI Can achieve 3 Axis interpolation , Realize the arbitrary coordinate track of the moving mechanism in space , The most common is spiral interpolation , such as ：XY While the axis is doing circular interpolation ,Z Axis up and down , It will form a spiral track in space .
   TwinCAT NCI An interface that supports two interpolation instructions ：G Code files and FeedTable.
   G The code file is a number of lines G A collection of code ,G The code has a set of specifications , What is commonly used is G Instructions and M Instructions . The simplest linear interpolation instruction G01, Circular interpolation command G02/G03.M The order is in G Switch states that need to be triggered during code file execution .
   TwinCAT NCI Contains G Code pre reader , In execution G Code files ,NCI Read ahead of time G Lines of code , Combined with the current position of each axis in the interpolation channel , Decompose the setting position of each axis in each control cycle .
   FeedTable Is the difference between the , G The code is not written in G In the code file , But from PLC The program temporarily fills in the interpolation instruction table . Instructions that can be filled in the interpolation instruction table and G The types of instructions in the code file are roughly the same , It also includes linear interpolation 、 Circular interpolation 、 M Orders, etc , But no longer G01 、 G02 Etc , Instead, it is distinguished by the type enumeration value of the interpolation instruction .
   TwinCAT NCI When doing interpolation exercise , The physical layers of all axes are in PTP Configured in axis .
   
   1.2. stay System Manager Medium test NCI function
   1.2.1. establish NC The tasks and PTP Axis
   This test uses a virtual machine , Yes NCI to grant authorization . First create NC The tasks and PTP Axis , As shown below ：