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AVEVA™ InTouch HMI

:IOAccess keyword attributes

  • Last UpdatedApr 23, 2025
  • 2 minute read

The :IOAccess keyword identifies the Access Names defined for an InTouch application. The :IOAccess keyword includes a set of attributes that describe the characteristics of a defined InTouch Access Name.

The following figure shows how Access Names are defined in an Excel spreadsheet with the :IOAccess keyword. Attributes are specified left to right in separate spreadsheet columns.

Access names definition in excel sheet

The following table shows the list of attributes associated with the :IOAccess keyword. The table lists the attributes in the order they are specified when using a template import file created with the DBDump utility.

String Position

Attributes

Acceptable Values

Default Values

1

Application

Application name defined for the Access Name

None

2

Topic

Topic name defined for the Access Name

None

3

AdviseActive

What information to poll from the server

No = Advise all items

Yes = Advise only active items

Yes

4

DDEProtocol

Communication protocol defined for the Access Name

No = Suitelink

Yes = DDE

MX = Message Exchange

No

5

SecApplication

Application name defined for the secondary source of the Access Name

None

6

SecTopic

Topic name defined for the secondary source of the Access Name.

None

7

SecAdviseActive

When to poll information stored on the secondary server

NO = Advise all items

YES = Advise only active items

None

8

SecDDEProtocol

Communication protocol defined for the secondary source of the Access Name

NO = Suitelink

YES = DDE

MX = Message Exchange

None

9

FailoverExpression

Failover expression that switches the Access Name to the secondary source when TRUE

None

10

FailoverDeadband

Integer number of seconds before starting failover to the secondary source defined by the Access Name

None

11

DFOFlag

Disable Failover flag

Yes = Disable Failover flag set

No = Disable Failover flag not set

None

12

FBDFlag

Switch back to Primary flag

YES = Switch back to the Primary source after the failover condition clears

NO = Do not switch back to the Primary source after the failover condition clears

None

13

FailbackDeadband

Integer number of seconds before switching back to the primary Access Name source after the failover condition clears

No value

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