Omron Sysmac NY512-1300, User Manual

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9-19
9 Socket Service
NY-series Industrial Panel PC / Industrial Box PC Built-in EtherNet/IP Port User’s Manual (W563)
9-
6 Det
ails on
Usin
g t
h
e Soc
ket Services
9
9-6-
4 UDP Sample Pro
gramming
In this sample, the UDP socket service is used for data communications between the NY-series Con-
troller and a remote node.
The processing procedure is as follows:
1
The SktUDPCreate instruction is executed to request creation of a UDP socket.
2
Execute the SktUDPSend instruction to request sending. The data in SendSocketDat[] is sent.
3
The SktUDPRcv instruction is executed to request reception. The receive data is stored in
RcvSocketDat[].
4
The SktClose instruction is executed to close the socket.
ST
*1 Replace the variable name with _EIP1_EtnOnlineSta (Port1 Online) or _EIPIn1_EtnOnlineSta (Internal Port1
Online), depending on which communications port you use.
9-6-4 UDP Sample Programming
Internal
Variables
Variable Data type Initial value Comment
Trigger BOOL False Execution condi-
tion
DoSendAndRcv BOOL False Processing
Stage INT 0 Status change
RcvSocketDat ARRAY[0..1999] OF
BYTE [2000(16#0)] Receive data
WkSocket _sSOCKET (Handle:=0,
SrcAdr:=(PortNo:=0, IpAdr:=’’),
DstAdr:=(PortNo:=0, IpAdr:=’’)) Socket
SendSocketDat ARRAY[0..1999] OF
BYTE [2000(16#0)] Send data
SktUDPCreate_instance SktUDPCreate
SktUDPSend_instance SktUDPSend
SktUDPRcv_instance SktUDPRcv
SktClose_instance SktClose
External
Variables
Variable Data type Constant Comment
_EIP_EtnOnlineSta
*1 BOOL Online
IP address: 192.168.250.1
UDP port number: 6000
Ethernet line
Built-in EtherNet/IP port
Data received.
Remote node
IP address: 192.168.250.2
UDP port number: 6001
Data sent.