There are many different Mitsubishi models, and each model can have different Input and Output modules. You may not be able to get the old program restored exactly as it was. If there is important operating data in the PLC, that will be lost. The PLC could have a password set, keeping you from doing anything to it (let us hope it has in this case). Because it is a scanned program from top to bottom, only the last case of an Output will work correctly, nullifying all previous cases. The 2nd use will cause an error in your program. Note that you should not use each Output coil -( )- more than 1 time. These 2 errors are present for all 3 Output rungs. Right now with your logic, the 1st and 2nd branches keep all Outputs ON all the time. For example, on Rung 1 top branch, you need this:įor the same error on the 2nd parallel branch, you need to inhibit the branch when all 3 inputs are on (so that the 3rd branch can cause the flashing action. What you need on the top branch of each Output rung are 2 bits to keep the single input from acting UNLESS the other 2 bits are OFF. You can see in the attached picture that with all 3 Inputs ON, your timer will not flash the bits, because they are already held ON by the top branch of each rung. But here is your logic inserted into the LogixPro Simulator (as best I can interpret it). You have some of your Input numbers mixed up.
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