Stop using global variables!
PLC-programmers, stop using global variables!
Global variables, global variables and global variables, whatever example sample project or real life PLC-project I look at, I see global variables being used to store data and exchange information between software modules. This has to stop! What's wrong with global variables, especially since so many of us PLC-programmers are using them and the PLC vendors themself use them in their examples? Let's find out!
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0:00 Introduction
1:41 Non locality
2:36 Implicit coupling
3:40 Sponsor: Ship In Six
4:14 Difficult to trace
5:11 Unit testing
6:20 Exceptions
7:11 Outro
#plc #programming #softwareengineering
