2. Unlocking the Development Power of Ignition with Python Scripts
Kevin McClusky
Co-Director of Sales Engineering
Travis Cox
Co-Director of Sales Engineering

3. 257 Functions!

4. Session Intro Welcome! This session focuses on Python in Ignition
First 30 minutes: Practical examples
Final 30 minutes: Advanced functions for Python experts

5. Other Options
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Dee Brown, Principal & Co-Founder, Brown Engineers, LLC

6. Scripting in Ignition Why? Lots of functionality under the hood
Ability to do file interactions, data processing
Multi-step processes, multiple steps, conditional execution

7. Python Review Python Basics Simple Types Integer Float String Boolean
None

8. Python Review Python Basics Complex Types Other objects List Tuple
Dictionary
Other objects
Functions
Classes

9. Python Review
Python Basics
Flow Control
if elif else
for
while

10. Ignition Scripting API
Wide range of functions
Ignition scripting API Functions!
system.alarm
system.dataset
system.date
system.db
system.device
system.dnp3
system.eam
system.file
system.groups
system.gui
system.nav
system.net
system.opc
system.print
system.report
system.security
system.serial
system.sfc
system.tag
system.twilio
system.user
system.util

11. Practical Examples Practical Examples
We’ll focus on a few specific examples of scripting in Ignition. Some best practices will be demonstrated along the way.

12. Practical Examples Demo
System.gui.transform, animations
Write to multiple tags / devices
Adding column to dataset

13. Advanced Python Topics Jython Libraries
Gateway vs Client scripts, scopes
Possible Pitfalls
Tips and Tricks

14. Jython Python in Ignition Language Interpreter Language Specification
system.gui.messageBox(“Hello World”)

15. Scripting Libraries Library Access in Ignition Ignition scripting API
system.gui.messageBox(“Hello World”)
Ignition scripting API
Python Standard Library
Java Class Library

16. Scripting Libraries Extended Library Access in Ignition
system.gui.messageBox(“Hello World”)
Ignition Module provided Functions
Python Additional Libraries
Java Additional Libraries

17. Advanced Python Script Scoping Gateway Scripts Client Scripts
Client interaction with Gateway

18. Advanced Python Possible Pitfalls Infinite loops
Heavy scripts with data processing
Gateway communication from clients with loops and high latency connections
Exception processing
Memory consumption / global variables / socket consumption
Gateway scripts vs clients scoping

19. Advanced Python Tips and Tricks Python list slicing list = [1,2,3,4,5]
print list[2:4]
print list[:3]
print list [3:5:2]
print list [5:1:-1]

20. Advanced Python Tips and Tricks List comprehensions list = [1,2,3,4,5]
newList = []
for item in list:
newList.append(item*2)
list = [1,2,3,4,5]
newList = [item*2 for item in list]

21. Advanced Python Tips and Tricks A Couple Keyboard Shortcuts:
system. <Ctrl-Space>
Ctrl-F, R, F3

22. Advanced Python Tips and Tricks 7.9 – Multi-Window support
system. function for opening and accessing separate windows

23. Advanced Python Tips and Tricks Globals
globals = system.util.getGlobals()
globals[‘myvar’] = “myValue”

24. Advanced Python Possibilities in Scripting
Communication via REST / json
WebDev RESTful Endpoint
File Parsing / processing
Large enterprise GN configuration: Message handling and distribution

25. Advanced Python Only for expert developers
Java swing component access through scripting
Ignition Module SDK access through python
type(), dir()
Ignition Module script function additions