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Background documentationSet Point Maintenance

 

You use this activity to define one or more set point parameters. A set point parameter is a collection of related values that allow you to identify a machine setting which a control system will strive to achieve. For example, the pressure for a boiler, or the speed of a motor speed controller.

This activity allows you to do the following:

  • Create and update set point groups

  • Attach set point groups to various objects

  • Create and change numeric and string set point parameters

  • Assign a target value along with upper and lower limits for numeric set point parameters

  • Assign string set point parameters to identify a tag name, file path, or URL

  • Copy an existing set point group to a new set point group

Actions

The following table describes the actions available when you choose More...:

Main Tab

Action

Description

Copy Set Point Group

Allows you to create a copy of this set point group with a different set point group name. You may also create a copy with the same set point group name and a different effective start date.

Fields

The following tables describe fields requiring explanation:

Main Tab

Field

Description

Set Point Group

A collection of one or more set point parameters.

Effective Start Date

The beginning date at which the set point group can be used.

Effective End Date

The date after which the set point group cannot be used.

Status

The status of the set point group

Releasable: Users can use the set point group without any restriction. The set point group may be used by operators in the POD.

New: Users cannot use this set point group, but they can change the record. It may not be used by operators in the POD.

Hold: Users cannot use this set point group. This status is temporary. Users can change the status of this record. A set point group with a status of Hold may not be used by operators in the POD.

Frozen: Users can use this set point group. The set point group may be used by operators in the POD.

Obsolete: Users cannot use this set point group. This set point group may not be used by operators in the POD.

Set Point Parameter Details

Field

Description

Set Point Parameter

The name of the controlled variable that is maintained by a control mechanism.

Data Type

Numeric: The type of the set point information is numeric.

String: The type of the set point information is string. Its value can be alpha-numeric characters.

Set Point Value

The target value of the set point parameter. This value must be between the values defined in the Lower Limit Value and Upper Limit Value fields.

Lower Limit Value

The minimum value that an operator can save for this set point parameter value. If blank, no minimum value restriction is placed on the set point parameter.

Upper Limit Value

The maximum value that an operator can save for this set point parameter value. If blank, no minimum value restriction is placed on the set point parameter.

Lower Limit Target Address

The machine address that is to store the Lower Limit Value for this set point parameter.

Upper Limit Target Address

The machine address that is to store the Upper Limit Value for this set point parameter.

Attachment Point Details Screen

Field

Description

Material Group

The name of the material group that contains a list of materials to which the set point group is attached.

Material/Version

The material and its version to which the set point group is attached. Enter a manufactured material rather than a component material.

Asterisk (*): All versions

Blank version: The current version

Specific version: The specific version

Operation

The operation to which a set point group is attached

Resource

The resource which the set point parameter details will be used to control.

Shop Order

The shop order to which this set point group is attached.

Routing/Version

The routing and version to which this set point group is attached.

Step ID

The routing step ID to which this set point group is attached.