PLC Simulator Online Release V0.3

2020-083

A new version of PLC simulator Online is available now with two features.

Math instructions

Math instruction icon.

If the  Math instruction element is not configured, its symbol has red colour.

ADD math instruction.

ADD - add two values

SUB math instruction.

SUB - subtract two values

MUL math instruction.

MUL - multiply two values

DIV math instruction.

DIV - divide two values

If the Math instruction element is not configured, its symbol has red colour.

Not configured math element.

By clicking on the pen symbol, you can access its properties, configure Input and Output Parameters, you can also select the type. Math instruction accepts a variable of type Number as a parameter.

Math element properties popup.

Compare instructions

Compare instruction icon.

The compare instructions let you compare two number values by using a specific compare instruction:

EQU compare instruction.

EQU - test whether two values are equal

NEQ compare instruction.

NEQ - test whether one value is not equal to a second value

GRT compare instruction.

GRT - test whether one value is greater than a second value

GEQ compare instruction.

GEQ - test whether one value is greater than or equal to a second value

LES compare instruction.

LES - test whether one value is less than a second value

LEQ compare instruction.

LEQ - test whether one value is less than or equal to a second value

If the Compare instruction element is not configured, its symbol has red colour.

Not configured compare element.

By clicking on the pen symbol, you can access its properties, configure Input Parameters, and select type. Compare instruction accepts a variable of type Number as a parameter.

Compare element properties.

What’s next?

The Variable section requires immediate attention. Many of you requested the ability to delete and edit variable parameters. Also, the display of the variable table needs some modifications to improve usability.

Meanwhile, my colleague is working on undo-redo functionality and PWA (Progressive Web Apps) to give an experience similar to native mobile apps.

You can view current road map of the project here.

Try PLC Simulator Online!

You can test all the changes by clicking on the button.


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Written by Szymon "Dagryl" Palczynski, who lives in West Ireland, programming industrial machines and helping others to learn Programmable Logic Controllers