udpRcvFrom

 Function A function calculates a result according to the current value of its inputs. A function has no internal data and is not linked to declared instances. - Receives a UDP User Datagram Protocol telegram.

Inputs

Input	Data Type	Range	Unit	Default	Description
En	BOOL	0, 1	N/A	No default	Execute the function.
sock	DINT	0, 65535	N/A	No default	IP of the socket.
nb	DINT	0, 65535	N/A	No default	Maximum number of characters received.
add[ ]	USINT	0, 32	N/A	No default	Buffer containing the UDP address (filled on output).
data	STRING	0, 255	N/A	No default	Buffer to store received characters.

Outputs

Output	Data Type	Range	Unit	Description
OK	BOOL		N/A	Returns TRUE when the function successfully executes. See Pipe Network - General Rules.
Q	DINT		N/A	Actual number of received characters.

Remarks

• If the characters are received, the function fills the ADD argument with the internal UDP of the sender.
• This buffer can be passed to udpSendTo to send the answer.

FBD Language Example

FFLD Language Example

IL Language Example

Not available.

ST Language Example

ReceivedBytes := udpRcvFrom(Socket_Number,5,add,data); //Read the position Position means a point in space which is described by different coordinates. 
Depending on the used system and transformation it can consist of a maximum of six dimensions (coordinates).This means three Cartesian coordinates in space and coordinates for the orientation.
In ACS there can be even more than six coordinates.
If the same position is described in different coordinate systems the values of the coordinates are different.