jgaldon

Thanks Mike, Will check. It is not completely what I want but it is very similar. Thanks again. Regards, Juan.

Thanks Mike, But I want to prevent the following case: I give the software to the company B, and then company B makes a mistake modifying the software, that results in a broken machine part. Then company B reverts the software to the original version made by company A, and says that this broken part was a result of my implementation, which is not true, because the machine was working properly before. How can I know if the software has been modified or not? Is there a way to know how many times the software has been written to the S7? Thanks in advance,

I would like to know how to track the different downloadings made to the PLC (SIMATIC S7-300). I'm going to explain why: My company(A) has made the software for other company(B), and the other company wants the software, this software controls a complete machine, and we have an agreement that the company B has not made any modifications to the software without telling us these modifications, but we want to know if there is a way to track if a modification to the software has been made without notification. Is there something like this? Do not hesitate to contact me if you need more help. Thanks in advance, Juan.