5. CONFIGURATION
Port: SERIAL_PORT := COM1;
Status: SERIAL_STATUS;
END_VAR
//INPUTS:
Get_Control.REQUEST := TRUE;
Get_Control.PORT := Port;
//FUNCTION:
Get_Control();
//OUTPUTS:
Get_Control.DONE;
Get_Control.EXEC;
Get_Control.ERROR;
Status := Get_Control.STATUS; //If it is necessary to treat the error.
Get_Control.CTS_VALUE;
Get_Control.DSR_VALUE;
Get_Control.DCD_VALUE;
5.12.1.4. SERIAL_GET_RX_QUEUE_STATUS
This block is used to read some status information regarding the RX queue, specially developed for the normal mode, but
it can also be used in the extended mode.
Figure 142: Block Used to Visualize the RX Queue Status
Input parameters Type Description
REQUEST BOOL
This variable, when true, enables the func-
tion block use.
PORT SERIAL_PORT
Select the serial port, as described in the
SERIAL_PORT data type.
Table 177: SERIAL_GET_RX_QUEUE_STATUS Input Parameters
Output parameters Type Description
DONE BOOL
This variable is true when the block is com-
pletely executed. It is false otherwise.
EXEC BOOL
This variable is true while the block is be-
ing executed. It is false otherwise.
240
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