“Read variable value by name” axis-specific function
IndexGroup: IdxGrp = 0x122300 + Channel ID
Index offset: IdxOffs = 0x10005 for axis 1
= 0x20005 for axis 2
Read by name | This function reads the value of a variable by its variable name. The variable that belongs to the axis assigned to this position (axis index) is then always accessed. |
Transfer parameter (here with stream offset specified):
0 |
Variable name with zero termination |
where
Contents | Type | Size |
Variable name (without instance identifier) | STRING | variable, max. 256 bytes |
=> stream length max. 256 bytes
Return value (here with stream offset specified):
0 |
variable value |
where
Contents | Type | Size |
variable value | String, REAL64, SGN32, REAL64[ ], SGN32[ ][ ], ... | variable, max. 2048 bytes |
=> stream length max. 2048 bytes
Example
Application examples
Example of reading an axis-specific variable. The variable V.A.WCS.Y, i.e. the 2nd axis is read by the index offset 0x20005
Transfer parameters:
V.A.WCS | 0 |
V.A.WCS name of the variable (without instance identifier V.A.WCS.Y)
0 zero termination
Return values:
1234.2 |
1234.2 Value of the variable of the 2nd axis