gclib 2.0.9
Communications API for Galil controllers and PLCs
 
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◆ GCmdD()

GReturn GCALL GCmdD ( GCon  g,
GCStringIn  command,
double value 
)

Wrapper around GCommand that provides the return value of a command parsed into a double.

Use this function to retrieve the full Galil 4.2 range, e.g. for a variable value with fractional data, or the value of an Analog input or Output.

Parameters
gConnection's handle.
commandNull-terminated command string to send to the controller.
valuePointer to a double that will be filled with the return value.
Returns
The success status or error code of the function. See gclib_errors.h for possible values.

See x_gcommand.cpp for an example.

Definition at line 289 of file gclibo.c.

References G_NO_ERROR, G_SMALL_BUFFER, GCommand(), and vector().

Referenced by commands(), GRecordRate(), and x_gcommand().