This document provides a description of configuring and using the SQL Queries section of Crimson 3, as well as installing SQL Express for testing and demonstration purposes.
CR3000 HMI / Graphite® HMI / DA30D Data Station
Querying SQL databases for data
Crimson® 3.0 (Build 702.002 or later) all builds of Crimson 3.1
Crimson 3 allows a user to query an SQL database to populate data tags with values. This allows for data to be controlled from a centralized location on an SQL Server. The data can vary from recipe information to other key production information.
Example databases can be found attached at the bottom of this Tech Note.
Configuring a Basic SQL Query
1. Create array tags for each required column of data in the SQL Table. In this recipe example, there will be one string tag (RecipeNames) and 5 numeric (integer) values as shown in Figure 1.
2. Navigate to the SQL Queries section of Crimson 3, as shown in Figure 2.
3. Set Enable SQL Queries to Yes. Configure the SQL Server Connection as required.
4. Click New-SQL Query from the top of the Navigation Pane, as shown in Figure 3.
5. Click on the newly created Query.
6. Configure as needed for the application.
a. Query Mode
- Periodic: the query will run at the specified Update Rate.
- On-Demand: the query will run when the RunQuery user function is executed.
b. Table Name: the name of the table to query.
c. Schema Name: type of schema used by the table, the default dbo is acceptable for most applications.
d. Number of Rows: number of rows to be requested by the query.
e. Sort Results: choose how to sort the results.
f. Sort by Column: which column to sort on.
g. Filtering will be covered in a later portion of this Tech Note.
7. Click on Column1, as shown in Figure 5.
8. Set the SQL Column Name to the column of the table that is being queried.
9. Set the SQL Type to the data type of the data in the column. Figure 6 shows a column named Recipe with a type of VARCHAR.
10. Click on Row_1 under the Recipe column.
11. Click on the tag to associate with this column in the Resource Pane. Assuming the tag is an array, click the Toggle Array button at the top of the Resource Pane to show all elements of the array, as shown in Figure 7.
12. Drag each element of the array in the Resource Pane to the associated row in the Navigation Pane.
13. To query additional columns, click on the Query (Query1 as shown in Figure 9) in the Navigation Pane and then click New-Column.
14. Repeat steps 7 through 13 as required. Figure 10 shows a completed query for a name and five values.
NOTE: Not all columns in the table need to be queried, but all of the columns configured, must exist in the table, or the query will fail.
Executing On-Demand Queries
1. Add a button to a display page.
2. Open the button's properties.
3. Referring to Figure 11, click on the Action tab.
4. Type RunQuery("Query1") in the On Pressed field. Replace "Query1" with the desired Query name to run.
5. Click OK.
Figure 12 shows the SQL Table from the server.
Figure 13 shows an example of the result.
Adding Filters to Queries
In Crimson 3.0 and builds of Crimson 3.1 prior to build 3113.000, the filters rely on fixed values. The filter shown in Figures 14 and 15 will only pull the rows where the value in the Val1 column are less than or equal to 1000.
Adding Filters in Crimson 3.0
1. Click on the Query to filter.
2. Click on the Configure Filters link as shown in Figure 16.
3. At the top of the Filters Window, configure the filter to add.
4. Referring to Figure 17, click the first drop-down and select the column to be used in the filter.
5. Select VAL1.
6. In the next drop-down, select the comparison tool to be used in the filter.
7. Enter the value to be used in the comparison in the text edit field, 1000 as shown in Figure 18.
8. Click the Add button to add it to the filter list.
9. Additional filters can be added, including a new drop-down for ANDing or ORing it with the previous filter.
10. Click OK when all filters have been added.
Figure 20 shows the results of the original query with the filter applied, refer to Figure 13 for the unfiltered results.
Adding Static Filters in Crimson 3.1 (Build 3113 and later)
1. Click on the Query to filter.
2. Click on the Edit Filters link as shown in Figure 21.
3. Click the Add Condition button at the bottom of the Filters Window.
4. Select the Column, Operator, and Filter as needed.
5. Additional filters can be added, including a new drop-down for binding a condition with the previous.
6. Click OK.
Refer to Figure 20 above to view the results of this filter.
Adding Dynamic Filters in Crimson 3.1 (Build 3113 and later)
Dynamic filters can be used to limit the amount of data transferred from the server to the unit and will alleviate the need for multiple array tags.
This example will begin with a single column query based on stopping at step 12 of the Configuring a Basic SQL Query section above, adding an Ascending sort on the Recipe (only) column.
1. Create a new query.
2. Referring to Figure 23, configure the Query to be On-Demand, Table1, and one row.
3. Add five more columns to Query2.
4. Adjust the SQL Column Name and SQL Type of each to match the table's column names (Recipe:VARCHAR and Val1-Val5: all INTs, in the example shown in Figure 24).
5. Navigate to the Data Tags section.
6. Create 6 new Numeric tags.
7. Rename them Val_1-Val_5 and Index, as shown in Figure 25.
8. Navigate to the SQL Queries section.
9. Click Row_1 under each column, excluding the Recipe column) and drag the appropriate tag from the Resource Pane and drop it on the Row_1, refer to Figure 26.
10. Click on Query2.
11. Click the Edit Filters link.
12. Click the Add Condition button.
13. Set the Column to Recipe, Operator to =, and the Filter to RecipeNames[Index], as shown in Figure 27.
14. Click OK twice.
15. Navigate to the Display Pages.
16. Add a new Data Box to the page.
17. Open the new Data Box's properties.
18. Set the Value to RecipeNames[Index].
19. Add a method to change the value of Index, either a Data Box set for Data Entry, or a pair of buttons set to increment and decrement index.
20. Add the five Val_X tags to the page.
21. Copy and paste the button created in Executing On-Demand Queries section above.
22. Open the new button and modify its Action tab to run Query2, as shown in Figure 28.
23. Click OK.
24. Download the database to the unit.
25. Press the Query1 button to populate the RecipeNames Array, as shown in Figure 29.
26. Modify the value of Index until the appropriate recipe is selected.
27. Press the Query2 button to populate the Val_X values, as shown in Figure 30.
Installing SQL Express
SQL Express is a free (limited) version of SQL usable for demonstration purposes and can be downloaded from: http://www.microsoft.com/express/Database/. Most of the default configuration options can be left unchanged, but there are two items that need to be edited in order to allow the SQL Sync to properly execute.
1. SQL Express does not install as the default instance, which is required in order for the Red Lion unit to sync with the server, as we cannot sync to a named instance. There is a checkbox that gives the option to choose a named or default instance.
2. Authentication method: Red Lion requires SQL Server authentication. Select the Mixed Mode option and specify the password for the administrative account.
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