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Wiki source code of OPC UA

Last modified by Devin Chen on 2025/12/05 09:18
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Wecon 1.1 1 = OPC UA Client =
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3 This document describes the communication between Wecon HMI PI8150ig and LX6C-0808MT-DB Ethernet OPC UA, the PLC as Server and the HMI as Client.
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5 **OPC UA Server Setting**
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7 1)Add [Symbol Configuration]
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Devin Chen 2.1 10 [[image:1718694163624-376.png||height="574" width="600"]]
Wecon 1.1 11
12 2)The option [Support OPC UA features] is enabled by default, do not change it, and then click [Add];
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Devin Chen 2.1 15 [[image:1718694187203-702.png||height="692" width="500"]]
Wecon 1.1 16
17 3)Click [Build] to compile the project;
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Devin Chen 2.1 20 [[image:1718694206493-877.png||height="478" width="900"]]
Wecon 1.1 21
22 4)Tick the boxes for POU node to make all variables are accessible from OPC clients;
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Devin Chen 2.1 25 [[image:1718694223959-314.png||height="478" width="900"]]
Wecon 1.1 26
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28 **HMI Settings**
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31 |=**Items**|=**Settings**|=**Note**
32 |Protocol|OPC_UA_Client|
33 |Connection|Ethernet|
34 |Port No.|4840|
35 |PLC station No.|1|
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38 (((
39 **✎**Note: Only 8000ig Series support OPC UA Client.
40 )))
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42 1)[New]→[setting]→[communication device]:[communication]Ethernet, [Protocol]Ethernet1, [Device type]OPCUA,[Protocol]OPC_UA_Client→[OK]
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45 [[image:1718692090272-964.png]]
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47 2)Set the  [Device IP] as Server IP:[Server IP]192.168.8.8,[Porta]4840.If you set the account of server,you need enter the [Username] and [Password] in the appropriate places.
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50 [[image:1718692350491-886.png]]
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52 3)Enter [Labels manage],click[Get Tags From Device]
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55 [[image:1718692618961-813.png]]
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57 Choose the tags we need:[Root]-[Objects]-[DeviceSet]-[LX6C-0808MT-DD]-[Resources]-[Application]-[Programs].Then click[Add],and[Save].
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60 [[image:123.png]]
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62 4)Then you can use these tags in the HMI.
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Devin Chen 2.1 65 [[image:1718692728268-946.png||height="434" width="764"]]
Wecon 1.1 66
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Devin Chen 2.1 68 = OPC UA Server =
Wecon 1.1 69
Devin Chen 2.1 70 **HMI Settings**
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72 1) [FUNCTION CONFIGURATION] →[OPC UA server] →Enable OPC UA Server
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74 (% style="text-align:center" %)
75 [[image:Picture1.png||height="563" width="870"]]
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77 2) After enabling the OPC UA server, a configuration interface for the OPC UA server-related properties will pop up.
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80 [[image:Picture2.png||height="760" width="852"]]
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82 **Description**: Enter a description or remarks about the OPC
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84 **OPC TCP**: Set the server's URL address
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86 **Port**: Set the port number for client interaction, default is 4840
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88 **Server Name**: Enter the name of the server, which can be left blank
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90 **Security Strategy**: This refers to the security policies provided by OPC UA. The OPC UA server offers four security policies and three authentication methods, allowing different encryption approaches through various combinations
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92 {{info}}
93 The settings and delete options only apply to newly added tags and groups, not to the default groups.
94 {{/info}}
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96 3) Authentication:
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99 [[image:Picture3.png||height="687" width="524"]]
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101 **Anonymous: **Select the permissions for client interaction when using anonymous login, including three types: browse, read, and write
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103 **Username_Password: **The username and password here are equivalent to those set on the [Project Configuration\User Permission] page. When a client logs into the server using a username and password, if the user’s group level matches the server configuration, they will have the corresponding permissions
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105 4) Tag configuration
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108 [[image:1764897460407-402.png||height="540" width="767"]]
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110 **Tag:** Displays the defined tags
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112 **Add Group:** Add a new group to manage tags
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114 **Add Tag:** Add the address tags you want to monitor; the name cannot be empty
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116 **Setting:** When a tag is selected, clicking this will navigate to the tag configuration interface. When a group is selected, clicking this will configure the group name
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118 **Delete:** Can delete added tags or groups
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120 **Name:** Tag Name
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122 **Type:** Indicates the Readable/Writable attributes of the tag, with "Readable" selected by default
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124 **Address:** Configures the address the tag is intended to monitor
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126 **Data Type:** Indicates the data type of the tag
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128 **Array Length:** When set to a value greater than 1, it indicates that the tag is an array, with a valid range of 1~~255
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131 [[image:1764897518846-171.png]]