Get Tag List Model

From SysCAD Documentation
Jump to: navigation, search

Navigation: Main Page -> Models -> Control 2 Models


General Description

The Get Tag List model can be used in both SysCAD ProBal and SysCAD Dynamic. It can be used as a fast alternative to using Excel for getting a long list of tags.

The Get Tag list model reads column of tags from a data file and then writes back the corresponding values to a subsequent column in the file. The first column must contain valid SysCAD Tags, any subsequent columns are optional and any data in these columns may be overwritten. Only one column of values can be written to the file at a time. The column to be written to is selected by the user.

By allowing multiple columns, the user can obtain a table of values where each column represents a different case or scenario. In a dynamic model the different columns can represent a set of values obtained at different times during a scenario. Up to 254 columns are allowed.

The model can be used to get all the tags when the model is finished solving, or the user can manually get the tags by pressing the Get Tags button.

Get Tag List Format

The input file should be a comma or tab separated text file. Typically a csv file.

  1. The first row (or line) in the Get Tag List file is ignored. The user may place column headings in the first row.
  2. The first column usually contains valid SysCAD Tags.
    • If the tag is invalid then SysCAD reports an error in the message window.
    • String and numeric tag types are allowed.
    • An entry which starts with a semi-colon(;), is regarded as comment and is ignored (in Build 136.18766 or later).
    • A blank row is ignored. The user may use the StopOnBlankTag option (only available in Build 136.18766 or later) to signal this is the end of the list of tags to be reported.
  3. The second and any subsequent columns is where SysCAD will paste the values into.

Examples

Example of different tag types:

Tag Value Obtained
XPG_086.Qm (t/h) 200
XPG_086.T (C) 220
XPG_086.EqpDesc Plant Feed
PID_CCD.Cfg.[1].OutputTag CCD_WashWater.QmReqd (t/h)
PID_CCD.Cfg.[1].On 0
PID_CCD.EqpDesc "CCD's wash, etc controllers"

Example for composition in pipe P_001 showing two columns of values:

File prior to getting tags (values in columns 2 onwards are ignored):

Tag
P_001.Qo.MF.C(s) (%)
P_001.Qo.MF.CO(g) (%)
P_001.Qo.MF.CO2(g) (%)
P_001.Qo.MF.N2(g) (%)
P_001.Qo.MF.O2(g) (%)
P_001.Qo.MF.H2O(g) (%)
P_001.Qo.MF.H2O(l) (%)


File after Get Tag List model run for column 1 and column 2:

Tag
P_001.Qo.MF.C(s) (%), 0, 10
P_001.Qo.MF.CO(g) (%), 5, 0
P_001.Qo.MF.CO2(g) (%), 5, 0
P_001.Qo.MF.N2(g) (%), 50, 50
P_001.Qo.MF.O2(g) (%), 10, 20
P_001.Qo.MF.H2O(g) (%), 20, 10
P_001.Qo.MF.H2O(l) (%), 10, 10

Note: Any data which was in columns 1 and 2 prior to the Get Tag List being generated will be overwritten. Any data that was in a column that wasn't written to (eg. column 3) will remain in the file.

How to use a Get Tag List

The easiest way to create the Get Tag List is by using MS Excel. The Get Tag List format and example is given above. Once the Get Tag List is created, save it as a csv file.

Switch to SysCAD, use the browse button to load the file into the model. Ensure the ColumnToGet is set to the correct column number.

GetTagList.png

The Get Tag List can then be generated by any of the following options:

  • Pressing the GetTags button.
  • Selecting the GetAtEnd option and solving the model.
  • Setting the tag "GTL_001.GetTags" to 1 in a PGM (effectively pressing the GetTags button from the PGM).

Data Sections

Summary of Data Sections

  1. GetTagListCon tab - Contains general information relating to the unit.
  2. Info tab - Contains general settings for the unit and allows the user to include documentation about the unit and create Hyperlinks to external documents.

Get Tag List Page

Unit Type: GetTagListCon - The first tab page in the access window will have this name.

Tag (Long/Short) Input / Calc Description
Common Data on First Tab Page
On Tick Box Enables or disables the GetTagList Block.
Status Feed back The status of the GetTagList with a brief summary of the file.
Folder Feed back The full path of the Get Tag List file.
File Input The file name of the Get Tag List. Relative File Path can be used. Note: this file must be created first. File can be txt or csv format.
 
Edit Button Allow the user to edit the file.
Browse Button Use this button to Browse for the file.
 
GetTags Button Use this button to Get the Tags from SysCAD.
 
ColumnToGet Input This specifies which column the values will be written into. Default value is 1 which corresponds to the first column.
StopOnBlankTag Tick Box SysCAD will stop searching for tags to be reported after the first blank row. (Only available in Build 136.18766 or later).
GetAtEnd Tick Box This will fetch the tags after the model has solved.

Adding this Model to a Project

Insert into Configuration file

Sort either by DLL or Group.

 

DLL:

Control1.dll

Units/Links

Control 2: Get Tag List

or

Group:

General

Units/Links

Control 2: Get Tag List

See Project Configuration for more information on adding models to the configuration file.


Insert into Project

 

Insert Unit

Control 2

Get Tag List

See Insert Unit for general information on inserting units.

Hints and Comments

  1. Useful model to output the same tags for multiple scenario cases or at different times.
  2. PGM logic can be written to effectively "push the button" to get values at a certain point and write them to the user specified column number.