Internet PLC Forum
General => Technical support => Topic started by: garysdickinson on November 29, 2016, 04:43:47 PM
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I got bored and decided to do some recreational PLC coding and decided to write a Tic Tac Toe program in ladder logic.
To make the problem more challenging I decided to attempt to write the code without using custom functions, just 100% ladder logic.
This is where I got into some issues with the [ILock] and [ILoff] functions. Turns out that they are not broken, but I was transfixed by the example in section 9.3.5. of the TL6ReferenceManual.
[ILock] and [ILoff] turned out to not be very useful for my purposes, but I'd like to know how to program the "Equivalent Circuit". I have tried everything, but I can't build this circuit with i-TRiLOGI 6 or 7.
Best regards,
Gary D*ckinson
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Thanks Gary.
i-TRiLOGI can't produce the ladder logic graphically as shown on the equivalent circuit on the right.
By using [ILOCK] and [ILOFF] the logic on the left is equivalent to the logic on the right. Basically that's what it meant.
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Oh damn.
The equivalent circuit seemed so much simpler than using ILock and IOff!
Best regards,
Gary D*ckinson