Hi all,
I'd like to ensure that a certain HMI software is indeed connected to one-and-only-this 1756-L61 CPU, i.e. if someone would exchange the CPU module, that HMI software should recognise it. Even if the same CF card is used inside the new CPU module. (Dont ask me why; my boss ordered this feature )
I have read something about Peer Safety Controller and SNNs, and guess this "CPU identification" could be done this way. But it also sounds to me as if there would be an additional piece of hardware required to do it?
Therefore, I'd prefer to simply readout the CPU's serial number that you can read at 'Edit' --> 'Controller Properties' --> 'Advanced' --> 'Serial Number'.
I have 2..3 questions:
- How can I read this number inside a PLC program and / or transfer it via CIP telegrams to my HMI. I.e., is there a tag containing this number? What is its name?
- I found that you can modify the ID found at the position mentioned above. So, in fact you modify the number the current program is compared to - but not the given CPU's unique and unchangable serial number, right?
- and one other question: I'm looking for the Rockwell manual 1756-pm001. The link "http://literature.rockwellautomation.com/idc/groups/literature/documents/pm/1756-pm001_-en-p.pdf" that I found somewhere here in the forum is no longer valid. (Maybe revision number changed or so) Has anyone a link to that document, please?
Thanks in advance for your help.
I'd like to ensure that a certain HMI software is indeed connected to one-and-only-this 1756-L61 CPU, i.e. if someone would exchange the CPU module, that HMI software should recognise it. Even if the same CF card is used inside the new CPU module. (Dont ask me why; my boss ordered this feature )
I have read something about Peer Safety Controller and SNNs, and guess this "CPU identification" could be done this way. But it also sounds to me as if there would be an additional piece of hardware required to do it?
Therefore, I'd prefer to simply readout the CPU's serial number that you can read at 'Edit' --> 'Controller Properties' --> 'Advanced' --> 'Serial Number'.
I have 2..3 questions:
- How can I read this number inside a PLC program and / or transfer it via CIP telegrams to my HMI. I.e., is there a tag containing this number? What is its name?
- I found that you can modify the ID found at the position mentioned above. So, in fact you modify the number the current program is compared to - but not the given CPU's unique and unchangable serial number, right?
- and one other question: I'm looking for the Rockwell manual 1756-pm001. The link "http://literature.rockwellautomation.com/idc/groups/literature/documents/pm/1756-pm001_-en-p.pdf" that I found somewhere here in the forum is no longer valid. (Maybe revision number changed or so) Has anyone a link to that document, please?
Thanks in advance for your help.