Ny-Series Instructions Reference Manual (W560 - Omron NY532-5400 Reference Manual

2 Instruction Descriptions
Function
The SktUDPRcv instruction stores the data in the receive buffer for the socket that is specified with
Socket in receive data RcvDat[]. The number of bytes to store is specified with Size. The number of
bytes that is actually stored is assigned to RcvSize. The node address of the node that sent the data is
stored in SendNodeAdr.
If there is no data in the receive buffer, the instruction waits for data for the time that is set with timeout
time TimeOut. Storage of the data to RcvDat[] is completed when the instruction is completed normally
(i.e., when the value of Done changes to TRUE).
The data type of Socket is structure _sSOCKET. The specifications are as follows:
Name
Socket
Handle
SrcAdr*
PortNo*
IpAdr*
DstAdr*
PortNo*
IpAdr*
* These members are not used for this instruction.
The data type of SendNodeAdr is structure _sSOCKET_ADDRESS. The specifications are as follows:
Name
SendNodeAdr
PortNo
IpAdr
Related System-defined Variables
Name
*1
_EIP_EtnOnlineSta
*2
_EIP1_EtnOnlineSta
*3
_EIP2_EtnOnlineSta
*4
_EIPIn1_EtnOnlineSta
*1 Use this variable name for an NJ-series CPU Unit.
*2 Use this variable name for port 1 on an NX-series CPU Unit, or for an NY-series Controller.
*3 Use this variable name for port 2 on an NX-series CPU Unit.
*4 Use this variable name for the internal communication port on an NY-series Controller.
2-1054
Meaning Description
Socket Socket
Handle Handle for data commu-
nications
Local address Local IP address and
port number
Port number Port number
IP address IP address or host
name. A DNS or Hosts
setting is required to use
a host name.
Destination Destination IP address
address and port number
Port number Port number
IP address IP address or host
name. A DNS or Hosts
setting is required to use
a host name.
Meaning Description
Source node Source node address
address
Port number UPD port number of the
source node
IP address IP address of the source
node
Meaning
Online
Data type
_sSOCKET
UDINT
_sSOCKET_
ADDRESS
UINT
STRING
_sSOCKET_
ADDRESS
UINT
STRING
Data type
_sSOCKET_
ADDRESS
UINT
STRING
Data
type
BOOL This variable indicates when built-in EtherNet/IP
port communications can be used.
TRUE: Communications are possible.
FALSE: Communications are not possible.

NY-series Instructions Reference Manual (W560)

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