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AVEVA™ Batch Management

Tag Examples

  • Last UpdatedJun 06, 2017
  • 1 minute read

The following tags are used in the examples that follow.

Tag

Type

Value

Tag1

Numeric

100

Tag2

Numeric

50

Tag3

Numeric

5.5

Tag4

Boolean

0

Tag5

Boolean

1

Tag6

String

"String1"

The following examples illustrate the types of expressions that you can create, as well as expressions that are invalid.

Expression

Result

Description

{Tag1}+{Tag2}

Invalid

Tags cannot be directly modified. The result must be Boolean.

{Tag2}/{Tag1}

Invalid

Tags cannot be directly modified. The result must be Boolean.

{Tag1}=>{Tag2}

Invalid

Invalid operator; should be >=.

(Tag5}

Invalid

Invalid delimiter (instead of {.

{Tag1}|{Tag5}

Invalid

Tag1 has invalid data type. Both tags must be Boolean.

{Tag6}|{Tag4}

Invalid.

Tag6 has invalid data type. Both tags must be Boolean.

{Tag6}:="String2"

Invalid

Tags cannot be directly modified. The result must be Boolean.

{Tag4}

Valid

False

{Tag5}

Valid

True

{Tag1}<{Tag3}

Valid

False

{Tag1}>{Tag3}

Valid

True

{Tag6}="String1"

Valid

True

{Tag6}<>"String1"

Valid

False

{Tag4}&{Tag5}

Valid

False

{Tag4}|{Tag5}

Valid

True

({Tag6}:="String2")=1

Valid

Putting parentheses around the assignment and evaluating it equal to one makes this operation valid.

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