Controller -- Queue

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Contents 1 Queue Profile Format 1.1 Example Queue Profile 2 How to use a Queue Profile 2.1 Example 3 Data Sections 4 Adding this Model to a Project

Queue Profile Format

1. The first row in the Queue Profile may contain headings made up with valid SysCAD Tags.
   • If the TagsInHeading selection box is ticked, these valid SysCAD tags will be automatically loaded into SysCAD.
   • If the TagsInHeading selection box is NOT ticked, the first row is ignored by SysCAD.
   • For SysCAD Tags that includes engineering units, put tag in single quotes ' '. For example 'Feed.Qm_Rqd (t/h)'.
   • If SysCAD finds a blank column or an invalid tag, all remaining tags are ignored.
   • Queue Profiles do not support string tags.
2. The columns in the profile should contain data that must be read.
3. The maximum columns loaded into SysCAD profile model will be 230.

Example Queue Profile

Feed_FC.Cfg.[0].Spt	'COOLINGWATER.T_Rqd (C)'	'FV102.Posn.Reqd (%)'
200	20	100
200	25	90
100	46	95
200	36	100
200	75	90

How to use a Queue Profile

The Queue profile can operate in two ways:

1. Manually press the Advance_Row button to move along the queue.
2. Used in conjunction with another unit operation such as a General controller to program in the queue logic. User can set up logic so that once a condition is met, the queue advances to the next row.

Example

Queue Profile: Test.csv

FEED01.Qm_Rqd (t/h)
100
200
300

PGM file: QueueLogic.pgm

Bit	Advance*
Double	Value@  

If Advance 
  SetTag("QC_1.Advance_Row", 1)  ;This will advance the queue profile to the next in line.
  Advance = 0
Endif

Value = GetTag("P_1.Qm (t/h)")

Data Sections

Tag / Symbol	Input / Calc	Description
Common First Data Section
On	Tick Box	Enables or disables the Queue Profile Blocks.
TagsInHeading	Tick Box	Uses the first row of the Queue profile as output tags. If this is selected but the tags on the QO tab page is not filled in automatically, simply press the Reload or Reload_Restart button to force load the tag names.
SetAlways	Tick Box
Folder	Display	The full path of the Queue profile.
File	Input	The file name of the Queue profile. Note: this file must be created first. File can be txt or csv format.
Status	Display	The status of the Queue profile with a brief summary of the file.
Edit	Button	Allow the user to edit the file.
Browse	Button	Use this button to Browse for the file.
Reload	Button	Reloads the Queue Profile.
Restart	Button	Restarts the Queue Profile from the first row.
Reload_Restart	Button	Reloads and Restarts the Queue Profile from first row.
ShowCnv	Tick box	If this is selected, the engineering units used will be shown with the variable value.
Check Tags	Button	SysCAD will perform a check on the validity of the tags used.
TagCount	Input	The number of columns being read from the queue profile, maximum is 230.
WrapAround	Tick Box	If this box is selected, then when the queue profile reaches the last entry in the file, it will start again from the beginning. If not, the value will remain being the last value in the file.
StartRow	Input	This is the starting row number. User can start the queue at any valid row.
CurRow	Input	This is the current row number the queue is at.
AdvanceRow	Button	Use this button to advance to the next row in the queue profile.
RowCount	Display	The total number of rows of data in the queue profile.
Tag.Item.[x]	If the TagCount is more than 1, then more fields will be available below. Note: if the user leaves a field blank, then the corresponding column of data from the profile will be skipped.
Output_Tag	Input	This is the manipulated variable. Note: only white, changeable data fields can be used here. If the TagsInHeading tick box is selected, then the tags present in the first row of the profile will be used here. If the tag is not automatically filled in after the TagsInHeading is selected, press the Reload or Reload_Restart button on the first Tab page, this will force load the profile tags.
Value	Display	The value read from the queue profile.

Adding this Model to a Project

Insert into Configuration file

Sort either by DLL or Group.

	DLL:	Control1.dll	→	Units/Links	→	Control: Queue Profile
or	Group:	General	→	Units/Links	→	Control: Queue Profile

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

Insert into Project

Insert Unit

→

Control

→

Queue Profile

See Insert Unit for general information on inserting units.