![]() ![]() ![]() Ladder logic is the lingua franca of industrial electrical controls. The Picaxe is not a PLC but it can certainly mimic one.įor those folks who aren’t familiar with ladder logic pdfs show an old MCS-BASIC program emulating a PLC for a simple building alarm system (this same little app could be done much easier in Picaxe BASIC because of all the included bit-control commands). HOWEVER, the Picaxe would NOT be suited for high-speed industrial applications because of the speed issue & no watchdog timer. ![]() The Picaxe is particularly well-suited for small PLC-style control applications where speed & danger are not issues. This is how I did the code for my Picaxe kayak control project (it’s BASICally a little PLC with I2C & OLED outputs). The only reason I’ve found to emulate a PLC is when you need functions provided by a uProc that are not usually found on inexpensive PLCs (I2C, display controls, etc.). In most cases it’s easier to just use a real (cheap) PLC if you’re controlling simple discrete IO. It is usually easier to read a printout in ladder logic format rather than raw BASIC code (e.g. It’s possible to emulate a PLC using a Picaxe or other uProc running BASIC. Picaxe emulating a PLC (but NOT a real PLC) ![]()
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