OPTOCONTROL USER'S GUIDE - Opto 22

Peer-to-Peer Communication ....................................................................................10-38
Using ARCNET Peer-to-Peer...............................................................................10-39
Using Ethernet Peer-to-Peer...............................................................................10-39
Pointer Commands ...........................................................................................................10-40
Understanding Pointers.............................................................................................10-40
Advantages of Using Pointers...................................................................................10-41
Referencing Objects with Pointers............................................................................10-41
Pointer Variables ................................................................................................10-41
Pointer Tables.....................................................................................................10-42
PID Commands .................................................................................................................10-42
Using PIDs .................................................................................................................10-42
Velocity PID Equation ................................................................................................10-43
Gain (P) ...............................................................................................................10-43
Integral (I) ...........................................................................................................10-43
Derivative (D)......................................................................................................10-44
Integral-Derivative Interaction ...........................................................................10-44
Configuration Tips .....................................................................................................10-44
Tuning Guidelines......................................................................................................10-45
Setting the Scan Rate ........................................................................................10-45
Determining the Loop Dead Time ......................................................................10-46
Tuning.................................................................................................................10-46
Solving Tuning Problems....................................................................................10-46
Starting the Tuning Process for a New PID Loop...............................................10-47
Derivative ...........................................................................................................10-47
Tuning Graphs ...........................................................................................................10-48
Simulation Commands .....................................................................................................10-49
Chapter 11: Using OptoScript ................................................................ 11-1
Introduction ........................................................................................................................11-1
In This Chapter ............................................................................................................11-1
About OptoScript................................................................................................................11-1
When To Use OptoScript....................................................................................................11-2
For Math Expressions..................................................................................................11-3
For String Handling......................................................................................................11-4
For Complex Loops ......................................................................................................11-6
For Case Statements ...................................................................................................11-7
For Conditions..............................................................................................................11-8
For Combining Expressions, Operators, and Conditions .............................................11-9
Converting to OptoScript..................................................................................................11-10
Duplicate Object Names ...........................................................................................11-10
File Sizes....................................................................................................................11-10
Changing Code to OptoScript....................................................................................11-10
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OptoControl User’s Guide