Hi, I test a method for find password from CQM1H-CPU21(51-61) and share with all. It's very easy: you must install (Plc Backup Tools V6.0) then select UM option and upload from PLC, after this, you open UM file with any HEX Editor program. Now you can see password in 0590h memory address.This metod tested for C200-CPM1- CQM1-CQM1H. For Download: 1. Jan 7, 2018 - Chuyn.m.kha.Unlock.Crack.Password.PLC.Siemens.Mitsubishi.HMI.Proface.

PAssword-protection is often used to - as the word says - to protect the content of the program and the intellectual properties, like anonymous said. I also know from customers that have a very bad paying policy, and there is a limited time, until the program will stop working to amke him pay the money OMRON deserves. The password used for unlocking this function is and should only be available by the responsible OMRON-application engineer to protect the right of OMRON (or the one who has done the programming). ANYTHING ELSE IS ILLEGAL! The passwords are there just make things hell, when you are trying to repair the machine. Don't give us the IP'rights' bullshit. Anyone who wanted the program could have it by many other ways, but when someone tries to maintain a machine, that's been operating for years without interuptions, then where the hell are you gonna come up with the password? Doprizovna pdgotovka 10 11 klas tomchuk.

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I say crack them all. Who cares about some 5 years old PLC program, unless you want to repair the machine. Stop whining about cracking the password protections. I'll just laugh at you, when you have to reprogram some nicely complex program just because you can't get the password and noone helps you crack it.

Just my two cents on this topic. Another consideration for the equipment builder is liability (at least in the US).

If someone goes in and changes the program and an employee gets hurt, who do you think the lawyers will go after? I know that you could prove that the code had been modified, but only after the time and expense of a court case, having your name dragged through the mud, etc. Yes it is difficult for the customer, but there are ways around the passwords for most controllers. You will just need to work with the manufacturer of plc system. I think one should keep products and 'oneshot'-lines apart.

In products for selling more than one password is ok, but in 'non-copyable' lines it's a good thing to leave the code open. But the main thing is: Who owns the code? Sometimes you develop something and its already ment to be owned by the customer. (same thing with electrical drawings). I always work with 'open cards on the table' and I think that has given me a better relation to the costumers and they have asked for my help even more. But as usual there more then one side.

Regards Peter. Have a look from the other side of the fence. Open thine eyes!

When I do a job with generators, I put pass word protection on the program due to the defects liability period. Don't want anyone stuffing around with my program and blowing up a $1 million engine then changing the program back and I get the blame for it. My insurance comany would love me for that. Insurance is expensive enough now. After 12 months and a day has passed, the client is quite welcome to the password as defects liability has passed. I do not have any proprietary type code generally, but I can understand integrators protecting code from theft that they have spent many hours developing. And believe me, theft of code occurs regularly despite copywrite protection which is as useless as tits on a bull.

With the advent and further development of function blocks, it is now becoming possible to password protect only a function block. This means that proprietary code inside that function block can be protected and the rest of the program left clear for 'factory fiddlers'. However, I will continue to password protect any software I write until the end of the defects liability period. The customer is then free to have the password and blow up all the $1 million engines he wants to. I might add that if the code is written and commissioned properly, there should be no need to alter it. Whenever I get called out to a service call on any of the systems I implement, everyone expects me to plug in the laptop.

The first thing I do is pull out the drawings and check inputs and outputs by way of the LED indicators on the I/O cards. About 90% of the time I do not even have to open the laptop. The LEDs are usually the telling blow for trouble shooting, not the code itself. I might add that I do a site where access was required all the time. I made them sign a legally binding contract to cover myself.

Edited 26 Sep 2005 by BobB. Hi Bob, I hear what you are saying, however, in my line of business, unless you were willing to give me a guarantee that you could cover breakdowns within 30mins 24/7 my company wont be buying your goods Sir.