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This function updates the local variable data (provided by gv_link or gv_create) associated via the interface, reading from the GV.

Syntax

i32 gv_read (i32 gvID)

gvID

ID of the global variable (obtained from gv_link or gv_create)

Result

Returns:

Value

Meaning

0

Operation successfully completed

-1

Manager not enabled

-2

invalidgvID (nonexistent interface)

-3

GV is locked

Validity

Rule, Task

Note

 

 

  

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