FB_SocketUdpAddMulticastAddress
Binds the server to a multicast IP address so that multicast packages can be received. This function block expects an already established UDP socket connection, which can be established via the function block FB_SocketUdpCreate.
Inputs
VAR_INPUT
sSrvNetId : T_AmsNetId := '';
hSocket : T_HSOCKET;
sMulticastAddr : STRING(15);
bExecute : BOOL;
tTimeout : TIME := T#5s;
END_VARName | Type | Description |
|---|---|---|
sSrvNetId | T_AmsNetId | String containing the network address of the TwinCAT TCP/IP Connection Server. For the local computer (default) an empty string may be specified. |
hSocket | T_HSOCKET | Connection handle of the listener socket. This handle must first be requested via the function block FB_SocketUdpCreate. |
sMulticastAddr | T_IPv4Addr | Multicast IP address to which the binding should take place. |
bExecute | BOOL | The function block is enabled by a positive edge at this input. |
tTimeout | TIME | Maximum time allowed for the execution of the function block. |
Outputs
VAR_OUTPUT
bBusy : BOOL;
bError : BOOL;
nErrId : UDINT;
END_VARName | Type | Description |
|---|---|---|
bBusy | BOOL | This output is active if the function block is activated. It remains active until acknowledgement. |
bError | BOOL | If an error should occur during the transfer of the command, then this output is set once the bBusy output was reset. |
nErrId | UDINT | If an bError output is set, this parameter returns the TwinCAT TCP/IP Connection Server error number. |
Requirements
Development environment | Target system type | PLC libraries to include (category group) |
|---|---|---|
TwinCAT v3.1.0 | PC, or CX (x86, X64, Arm®) | Tc2_TcpIp (communication) |