DCP_Identify (FB)¶

FUNCTION_BLOCK DCP_Identify

The Identify service can be used to discover Profinet devices on the network.
It can be optionally applied with a filter.

Example

PROGRAM PLC_PRG
VAR
    scan : ProfinetCommon.DCP_Identify;
    device : ProfinetCommon.DCP_DeviceData;
    i : DINT;
    dcpSet : ProfinetCommon.DCP_Set;
END_VAR

scan.ControllerID := PN_Controller.MasterID;
scan();          // trigger execution of function block by scan.xExecute := TRUE
IF(scan.xDone) THEN
    FOR i := 0 TO scan.DetectedDevices.Count - 1 DO
        device := scan.DetectedDevices.Get(i);
        IF(device.StationName = 'hello')THEN
            //for testing we just change the IP
            dcpSet.xExecute := TRUE;
            dcpSet.ControllerID := PN_Controller.MasterID;
            dcpSet.MAC := device.MAC;
            dcpSet.Data.Options.IPSettings := TRUE;
            dcpSet.Data.IPSettings := device.IPSettings;
            dcpSet.Data.IPSettings.IPAddress[3] := 123;
        END_IF
    END_FOR
END_IF
dcpSet();

InOut:

Scope	Name	Type	Initial	Comment
Input	`xExecute`	`BOOL`		Rising edge: Start Operation DCP-Identify
	`ControllerID`	`BYTE`		The ID of the Controller/Supervisor
	`Mode`	DCP_FilterMode	DCP_FilterMode.All	Either detect all devices, or use filter
	`Filter`	DCP_FilterData		DCP attributes used for filtering
Output	`xDone`	`BOOL`		Action successfully completed
	`xBusy`	`BOOL`		Function block active
	`xError`	`BOOL`		TRUE: error occurred, function block aborts action FALSE: no error
	`ErrorCode`	DCP_Error		Service failed
	`DetectedDevices`	ListOfDevices		List of discovered devices