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Infilink HMI - Powerful Customization
Tools
Using the powerful, yet easy Scripting features of
Infilink allows a developer to customize a project to suite the
unique requirements of any application. Scripts can be used to
perform data calculations, control the process, manipulate text
strings, read & write to data files, create complex object
animations, control the behavior of a window, or even play
"wav" files.
Types of Scripts
While all scripts in Infilink use the same commands
and syntax, Infilink classifies each
script into one of five (5) types, based on when the script needs to
execute within the overall project.
| 1) |
Project Scripts contain those
functions and operations that are performed independent of any
operator actions. This type of script can be invoked in one of
three modes: a) execute once during system startup, b) execute
once during system shutdown, or c) execute periodically during
normal running.
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| 2) |
Window Scripts
operate only for a given display window in one of three modes:
a) execute once when the widow is made to appear, b) execute
once when the widow is removed from view, or c) execute
periodically while the widow is in view.
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| 3) |
Take Action
Scripts execute when the operator clicks or pushes a
button or other display object.
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| 4) |
Tag
Scripts execute when you want to perform some action as a
result a given tag value changing state or exceeding some
other value.
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| 5) |
Alarm Scripts
execute in response to the state of a alarm condition,
including: a) transition to active state, b) periodically
while the alarm is active, c) on alarm acknowledgement, or d)
alarm transition to inactive.
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Script Commands
The Infilink scripting language includes a comprehensive set of
commands to perform calculations, control the behavior of display
windows and their objects, and much more. The following is a sample
of the commands at your disposal:
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Command
Type
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Example
Functions |
Conditional
Operators:
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>, >=,
<, <=, ==, <> |
Logical
Operators:
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ON, OFF,
TRUE, FALSE |
Math
Functions:
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+, -, *, /,
Sin, Cos, Tan, Abs, Power |
String
Functions:
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Trim, Value,
Case, Length, Left, Right, Middle |
Program Flow
Control:
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If, Then,
Else, Endif, While |
Window
Control:
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Hide, Load,
Move, Resize, Show |
Sound
Control:
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Beep,
PlaySound (wav. file) |
Object
Properties:
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Show, Color,
Style, Fill, Angle |
Alarm Viewer
Properties:
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Severity,
Ack, Scroll, StartDate, StopTime |
Trend
Properties:
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DrawMode,
TimeSpan, StartTime, StopDate |
File
Functions:
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Read, Write,
File Type (.txt or .csv) |
System
Functions:
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Alarm Log
Start, Data Log Stop, Login/out |
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Script Syntax
Infilink scripting is very similar to popular programming
languages like BASIC or FORTRAN and allow the user to include
documentation within the script. The following examples illustrate
how easy it is to use write Infilink scripts:
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Script Example 1 |
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#
This example loads Microsoft Excel with the spreadsheet
# named calc.xls and if successful, sends the values of the
tags named
# PlcTagPressure and PlcTagTemp to the spreadsheet by
assigning
# those values to tags that reference cells R1C1 and R1C2
if Run (excel.exe calc.xls) then
ExcelTagR1C1 = PlcTagPressure;
ExcelTagR1C2 = PlcTagTemp;
endif; |
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Script Example 2 |
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#
This example loads Microsoft Excel with the spreadsheet
# named calc.xls and if successful, sends the values of the
tags named
# PlcTagPressure and PlcTagTemp to the spreadsheet by
assigning
# those values to tags that reference cells R1C1 and R1C2
if Run (excel.exe calc.xls) then
ExcelTagR1C1 = PlcTagPressure;
ExcelTagR1C2 = PlcTagTemp;
endif;
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