jgaldon

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.

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,