Read Motion Information with MC_ReadMotionInfo

MC_ReadMotionInfo is used to read 32-bit and 64-bit motion information from an axis. While Enable input is On, the value of the item set by ParameterNumber is continuously output to Value32 and Value64.

  • ParameterNumber can be changed while the Enable is TRUE to read a different value.

  • LS_Connect must be executed before this function block can be used.

  • The examples in this topic can be found in the XMC_SingleAxis_FBs.zip downloadable from Example Applications.

Element Name Element Type Description
Enable Input Level detected request to execute the function block.
Axis Input/Output Axis reference variable. This can not be a constant.
ParameterNumber Input Specify the number of the parameter to read. See Parameter Number table below.
Valid Output Indicates the output of the function block is valid.
Busy Output Indicates the function block is currently being executed.
Error Output Indicates whether an error occurs or not.
ErrorID Output Error Identification number.
Value32 Output Output of the 32-bit value of the parameter as a REAL.
Value64 Output Output of the 64-bit value of the parameter as a LREAL.

 

Parameter Number table

Parameter Number Parameter Value Description
0 Current Position Current position value of the axis.
1 Commanded Position Commanded position value of the axis.
2 Current Velocity Current speed value of the axis.
3 Commanded Velocity Commanded speed value of the axis.
4 Current Torque Current torque in percentage.
5 Commanded Torque Commanded torque in percentage.

//Set Axis Reference

Axis1 := 1;

 

IF (_AX01_RDY) THEN /

/Example of MC_ReadMotionInfo

INST_READMOTIONINFO(Enable:=Enable_ReadMotionInfo, Axis:=Axis1,

ParameterNumber:=INST_READMOTIONINFO.ParameterNumber, ErrorID=>INST_READMOTIONINFO.ErrorID);

END_IF;

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LM504