AVEVA™ Plant SCADA

Tag Address Configuration

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Tag Address Configuration

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Last UpdatedDec 16, 2021
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The tags supported by OPCLX are:

Controller tags
Program tags.

Controller Tags

Controller tags contain data which is accessible to the programs within the RSLogix project. When controller tag is configured in OPC gateway, the same can be configured in the Plant SCADA in the following formats depending on the OPC server:

[OPCTopic]TagName

Syntax with the FactoryTalk and RSLinx Classic is the same in case of controller tags.

The table below describes the syntax and example for configuring controller tags:

Address	Plant SCADA type	OPCLX type	Example
[OPCTopic]<item_id>	DIGITAL	VT_BOOL	[OPCLX_test]bool_symbol
[OPCTopic]<item_id>	BYTE	VT_UI1	[OPCLX_test]byte_symbol
[OPCTopic]<item_id>	INT	VT_I2	[OPCLX_test]int_symbol
[OPCTopic]<item_id>	LONG	VT_I4	[OPCLX_test]long_symbol
[OPCTopic]<item_id>	REAL	VT_R4	[OPCLX_test]real_symbol
[OPCTopic]<item_id>	STRING	VT_ARRAY of VT_UI1	[OPCLX_test]bool_symbol

Program Tags

Program tags contain data that is used exclusively within a program in RSLogix project. When a program tag is configured in OPC gateway, the same can be configured in Plant SCADA in the following formats depending on the OPC server:

Syntax with the FactoryTalk OPC server is:

::[OPCTopic]Program:MainProgram.<TagName>

Syntax with the RSLinx Classic OPC server is:

[OPCTopic]Program:MainProgram.<TagName>

The table below describes the syntax and example for configuring program tags RSLinx Classic:

Address	Plant SCADA type	OPCLX type	Example
[OPCTopic]<Program:MainProgram>. <item_id>	DIGITAL	VT_BOOL	[OPCLX_test] Program:MainProgram. bool_symbol
[OPCTopic]<Program:MainProgram>. <item_id>	BYTE	VT_UI1	[OPCLX_test] Program:MainProgram. byte_symbol
[OPCTopic]<Program:MainProgram>. <item_id>	INT	VT_I2	[OPCLX_test] Program:MainProgram. int_symbol
[OPCTopic]<Program:MainProgram>. <item_id>	LONG	VT_I4	[OPCLX_test] Program:MainProgram. long_symbol
[OPCTopic]<Program:MainProgram>. <item_id>	REAL	VT_R4	[OPCLX_test] Program:MainProgram. real_symbol
[OPCTopic]<Program:MainProgram>. <item_id>	STRING	VT_ARRAY of VT_UI1	[OPCLX_test] Program:MainProgram. bool_symbol

The table below describes the syntax and examples for configuring program tags FactoryTalk:

Address	Plant SCADA type	OPCLX type	Example
::[OPCTopic]<Program:MainProgram>. <item_id>	DIGITAL	VT_BOOL	::[OPCLX_test] Program:MainProgram. bool_symbol
::[OPCTopic]<Program:MainProgram>. <item_id>	BYTE	VT_UI1	::[OPCLX_test] Program:MainProgram. byte_symbol
::[OPCTopic]<Program:MainProgram>. <item_id>	INT	VT_I2	::[OPCLX_test] Program:MainProgram. int_symbol
::[OPCTopic]<Program:MainProgram>. <item_id>	LONG	VT_I4	::[OPCLX_test] Program:MainProgram. long_symbol
::[OPCTopic]<Program:MainProgram>. <item_id>	REAL	VT_R4	::[OPCLX_test] Program:MainProgram. real_symbol
::[OPCTopic]<Program:MainProgram>. <item_id>	STRING	VT_ARRAY of VT_UI1	::[OPCLX_test] Program:MainProgram. bool_symbol

AVEVA™ Plant SCADA