Function - Receives a UDP telegram.
Inputs
|
Input |
Data Type |
Range |
Unit |
Default |
Description |
|---|---|---|---|---|---|
|
En |
BOOL |
0 to 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 to 32 |
N/A |
No default |
Buffer containing the UDP address (filled on output). |
|
data |
STRING |
0 to 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 Function - 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
