Rodney

Ptbodds If you have no luck getting the software let me know if l can help in transferring your software   Rodney

Again it is against the terms of service to discuss anything to do with bypassing passwords on this forum. Your best option is to follow the offer from Omron  

What you are requesting is not allowed on this forum. You can contact the manufacture and if you can prove you are the owner of the software they can help.

Did you check in device manager what com port is assigned and if there is any conflict. Rodney

The device manager should also if there is a conflict  Rodney

AmirB To communicate with the Siemens series 200 PLC you must use a Siemens PPI Cable. Rodney

IWhy don’t you post a couple of your project and maybe we can give you some better advice. The post mentioned by Ron_S 17007 should be one and any other project. Rodney

I assume the P.L.C is a Mitsubishi FX2N-48MR the cable would be a Mitsubishi SC09 cable. The software would be Medoc or GX     Developer. It is not a copy past situation the program has to be written via the programming software then transferred to the P.L.C also a replacement battery has to be installed to retain the program. Rodney

AmirB Medoc version 2.2 has in its library the model A0J2. Rodney

AmigaB l am pleased you are now sorted. good luck Rodney

You must give much more information in order that we can assist you in achieving your goal of writing your code. Rodney

But in that case why use a data register

The two PLCs have different software and different programming cables. So you cannot take the program from the 300 PLC and put it into the 200 PLC. You require Simatic S7 software and a MPI cable for the 300 PLC. For the 200 PLC you require Micro Win software and a PPI cable. So you upload the program from 300 PLC and rewrite the program with the Micro Win software and download it to the 200 PLC. Not knowing the machinery or the application it may not be as simple as l have suggested however both of these machines must have worked in the past so it must be possible.  Good luck Rodney   

If it does not appear anywhere in the program then how could it be latched.

Is there a HMI or a Scada connected  to the to the PLC. D435 is a data register and can receive a value from these devices.  Rodney