Beifu PLC passes MC_ Readparameter read configuration parameters of NC axis

In the actual development, it is necessary to read the scale factor of the axis Scaling Factor、 Direction of rotation, etc NC Parameters . This article introduces through MC_ReadParameter Function block read System Manager in NC Parameters of the axis .

1. Operation process
   1.1. Biff Beckhoff
   1.1.1. MC_ReadParameter Introduce
   This function block is used to read the setting of the axis NC Parameters , It is not used to read drive parameters . So-called NC The parameter is in NC Relevant parameters set in the interface , As shown below
   
   The function block is described as follows
   
   among ParameterNumber Indicates the index number obtained , The structure is as follows
   
   AxisId := 1000, Indicates that the basic number is 1000, And then offset it down , such as AxisEncoderScalingFactor by 1041, AxisEncoderDirectionInverse by 1043
   
   1.1.1. PLC Programming
   In this paper, the coding factor is obtained Scaling Factor And direction of rotation Invert Encoder For example , as follows
   First declare the function block , As shown below