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Scripting
Agenda• Introduction• Built-in Language• VBScript• Q&A
Introduction
Introduction
InduSoft Web Studio (IWS) is an easy-to-use configuration interface to designs projects for data communication (interoperability), data manipulation (portability), and data presentation (mobility).
Furthermore, when you need extra flexibility for data manipulation, it offers a complete set of tools for scripting, with full support for IntelliSense and debugging tools to increase productivity.
Native LanguagesBuilt-In Language
Portability across all platforms, including Linux/VxWorks (IoTView)
Support for all tags, and built-in functions
Simplest syntax
Graphic: Screen Attributes Graphic: All animations (including
command) Task: All tasks (including Math and
Scheduler)
VBScript Language Flexible standard, supported by
different platforms Wide range of documentation and
examples Support for all tags, built-in
functions, variables, VBScript functions, and COM objects.
Simple syntax
Graphic: Graphic Scripts, Screen Scripts
Graphic: Command, ActiveX, .NET Controls, Custom Widgets
Task: Script
Internal Architecture
Viewer.exe
Studio Manager.exe
TagsEngineDriver Runtime
DDE Client
DDE Server OPC Client
OPC Server
Database Client Runtime
ODBC Runtime Background Task
TCP/IP ClientTCP/IP Server
Viewer
AlarmsTrendsRecipesReportsMathScriptScheduler
Tasks ExecutionStart BGTask
ExecutionGroup 1
Execute Group 1
ExecutionGroup 2
Execute Group 2
ExecutionGroup N
Execute Group N
F
F
F
T
T
T
Same algorithm for Math Task and Script Task
Math Task and Script Task are independent threads, so they can run “concurrently”. The execution of each thread is independent from each other.
The execution field either returns FALSE (0 or blank) or TRUE (any value different from 0). When it is true while the thread is checking the state of the Execution field, the respective Group is executed.
The state of the execution field during its respective Group execution is irrelevant.
Built-In Language
Built-in Language Main Characteristics
Support for all tags and 400+ built-n functions (Arithmetic, Statistical, String, File, Loop, etc)
Syntax for each field: Tag and/or Expression fields: Just write the expression. E.g.: Abs(TagA) Label, Caption, Hyperlink, Message, or File Name fields: Just write the expression
between curly brackets. E.g.: {Abs(TagA)}
Value attribution: The equal sign (=) is NEVER used to assign a value. The equal sign (=) is ALWAYS used for comparison. In order to assign a value, write the expression in the EXPRESSION field and the tag that should receive the value in the TAG field (Math and Scheduler groups).
VBScript Language
VBScript Scope Diagram
Interface
Library ExecutionScope and Lifetime of
variables and proceduresVariables Procedures BGTask
(Server)Viewer(Local)
Global Procedures Yes Yes** Yes** Global
Graphic Scripts Yes Yes YesGraphic Script*Screen Script*Screen Controls
Screen Scripts Yes Yes Yes Screen ScriptScreen Controls
Screen Controls(Command, ActiveX, .NET) Yes Yes Screen Control itself
Startup Script Yes Yes Yes Startup ScriptScript Groups
Script Groups Yes Yes Script Group itself
* Using the Graphics.<Variable_or_Procedure_name> syntax.** Global Procedures is a repository (library) of user-defined sub-routines and functions, which can be called from any VBScript interface in the project. It is not an execution module (thread) by itself.
VBScript Scope Summary
User $ as a prefix to access tags and built-in functions
Declaring variables (Dim) and constants (Const)
Calling Procedures (Call) and defining parameters (ByRef, ByVal)
IntelliSense
VBScript Editor
Built-in $Trace() function
VBScript MsgBox function
Error Handling with On Error Resume Next / On Error Goto 0
Output Window messages
Troubleshooting – Basic tools
Troubleshooting – Debug Tools
If…Then statement executes a set of code when a condition is true
If...Then...Else statement selects one of two sets of lines to execute
If...Then...ElseIf statementselects one of many sets of lines to execute
Select Case statement selects one of many sets of lines to execute
Conditional Statements
For…Next statement runs code a specified number of times
For each...Next statement selects one of two sets of lines to execute
Do...Loop statementselects one of many sets of lines to execute
Looping Statements
Date/Time functions (DateAdd, DateDiff, etc)
Conversion functions (Asc, Chr, etc)
Format Functions (FormatDateTime, etc)
Math Functions (Rnd, Sqr, etc)
Array Functions (Ubound, etc)
String Functions (LCase, Ucase, etc)
Other Functions (MsgBox, InputBox, CreateObject, etc)
VBScript functions
$RunGlobalProcedureOnServer()
$RunGlobalProcedureASync()
$RunGlobalProcedureASyncGetStatus()
$RunGlobalProcedureOnFalse()
$RunGlobalProcedureOnTrue()
$RunGlobalProcedureOnTrigger()
Advanced built-in functions
InduSoft Web Studio main Database/ERP built-in functions:
$DBExecute()
$DBCursorOpenSQL()$DBCursorClose()$DBCursorRowCount$DBCursorGetValue()$DBCursorNext()
Database Interface
ActiveX interface (properties, methods, and events)
COM Server interface (CreateObject statement)
ActiveX and COM Servers
InduSoft Web Studio Technical Reference Manual (Help)
W3SCHOOLS Web Site (http://w3schools.com/vbscript/default.asp)
Microsoft MSDN
(http://msdn.microsoft.com/en-us/library/t0aew7h6)
Additional References
Q & A
How to contact InduSoft
Email(US) [email protected](Brazil) [email protected](Germany) [email protected]
Support [email protected] site
(English) www.indusoft.com(Portuguese) www.indusoft.com.br(German) www.indusoft.com.de
Phone +1 (512) 349-0334 (US) +55 (11) 3293-9139 (Brazil) +49 (0) 6227-732510 (Germany)
Toll-Free 877-INDUSOFT (877-463-8763) Fax +1 (512) 349-0375
Contact InduSoft Today
Germany
USA
Brazil
Thank you!
