Edit program parameter and connection properties

From either the Controller Organizer or Logical Organizer, right-click the program to change and choose

Properties

.

Select the row of the program parameter to edit.

Click the icon to view the members of the program parameter. Note that for some of the program parameters, cascade down more than one level to see all the members.

Click the icon to collapse the list.

To create a program parameter, look for the create icon at the bottom of the grid and enter the name of the program parameter in

Name

.

Select the usage type from the list. Select an

Input

,

Output

,

InOut

, or

Public

parameter.

Use this column to switch to another valid usage type.

(Equipment Phase only) For the program parameter to be seen by the

FactoryTalk Batch

Server, select the

Sequencing

check box. Only

Input

and

Output

parameters can be used by a sequence.

Enter the type of tag to create or click to navigate to the

Select Data Type

dialog box from to choose the appropriate data type.

Enter the tag to use as an alias tag or click to access tags using the tag browser.

Also use a tag to alias a parameter of another program. To do this, click the down arrow to select tags using the tag browser.

The

Base Tag

automatically populates. The

Base Tag

is the last link in an alias chain. This tag contains the datatype definition.

In

Description

, enter a description for the program parameter.

If no description is provided for a particular item, the description of the next highest item in the tag hierarchy appears in this column. This is called a pass-through description. These descriptions are shown according to these rules:

(optional) Open the

Translation Viewer

dialog box to edit the description for other languages.

Edit only explicit descriptions (that is, those items that do not appear dimmed.)

Select whether the tag has

Read/Write

,

Read Only

, or no access (

None

) from external applications such as HMIs.

If an alias tag is selected, cannot edit the external access.

Select

Constant

to prevent executing logic from writing values to the associated program parameter. If a logic routine tries to write to a constant tag, the routine does not verify.

Use the

Connections

column to view one connection associated with the program parameter.

If multiple connections exits, the connections appear in the

{X:Y} Connections

format.

For example, for

{2:3} Connections

, the 2 represents the number of connections to the tag member; 3 represents the total number of connection to all of the sub-members of the tag member.

When selecting a row that has connections, the connections show in the Connections grid in the bottom part of the

Parameters

tab. If a connection has multiple connections, the

{X:Y} Connections

format shows.

To add a connection to the program parameter, look for the create icon at the bottom of the Connections grid and enter the name of the program parameter or controller scope tag in

Name

. Click

Browse

to navigate to the

Select Tag

dialog box to choose a tag.

The leftmost part of the grid provides icons that indicate the condition of the program parameter or connection, as follows:

* Indicates a row in which content changed and the change is not saved. An asterisk also appears on the

Parameters

tab of the properties dialog box when content within the

Parameters

tab changed.

Indicates a row in which there is an error in the content. Fix the error before downloading the project to the controller.

Indicates a row to create a program parameter or connection.