Tags
- Last UpdatedNov 03, 2021
- 2 minute read
A tag is a collection of data or information that is given. Tags are named and defined with the Process Model Editor. A tag usually corresponds to a control system data point. Tags are also used to configure batch control system applications such as recipes and reports. All tagnames must be unique.
The batch control system has eight tag types: unit tags, process tags, connection tags, transfer tags, system class tags, system unit tags, system connection tags, and system segment tags. Each type has a unique responsibility as described in the following table.
|
Tag Type |
Use |
Value from Control System |
Comments |
|---|---|---|---|
|
Unit |
Process Modeling: |
Yes |
|
|
Process |
Process Modeling: |
No |
Note 1: For each process tag, the Model Editor automatically creates one unit tag
for each unit in the process class. |
|
Connection |
Process Modeling: |
Yes |
|
|
Transfer |
Process Modeling: |
No |
Note 1: For each transfer tag, the Model Editor automatically creates one connection tag for each connection in the transfer. |
|
System Class |
Process Modeling: |
No |
Note 1: System tags are internal batch control system tags and are updated by the
AVEVA Batch Management System. |
|
System Unit |
All SCADA Applications |
No |
Note 1: System Unit tags are automatically created for each unit assigned to a process class. |
|
System |
All SCADA Applications |
No |
Note 1: System Connection tags are automatically created for each connection assigned to a transfer class. |
|
System |
All SCADA Applications |
No |
Note 1: System Segment tags are automatically created for each defined segment. |