aphuk

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About aphuk

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  1. Whoops, looks like I stirred up the comms debate again. on my requirement. I currently have a network which has a Multi mode Fibre Optic backbone running thru Hirschmann RS20 switches for each drop. At the moment there are only PC's and Enet Control Logix PLCs connected. The hope was that I could add another Hirschmann switch in the cubicle where the Siemens PLC resides and then connect it on to the network thus enabling all the other nodes to be able to talk to it. I am not a LANhead and my simplistic appraoch was that, once the Siemens was physically connected to the network, the Control Logix PLC(s) would see it as just another node. If the Control Logix PLC cannot talk directly to the Siemens then my other thought was that I could use one of the PC's (running WW Intouch) as a 'bridge' by installing a Wonderware I/O server that could talk (over the physical network) to the Siemens PLC and read the registers into its database and then map them into the Control Logix PLC. any thoughts Gentlemen?
  2. I have a 1756-ControlLogix L61 PLC on an Ethernet network. There is a Siemens PLC in the field which has data I need to accquire. If I get a drop line to the Siemens PLC and incorporate it into the Ethernet LAN what would be the next step required in order to read data from the Siemens PLC. The fundamental question is can these PLC's talk to each other directly?
  3. That's fime Bob, will wait for your reply. For the record, am still not getting email notifications on this thread aven though I did subscribe? So will keep checking back at everyday!
  4. Thanks Bob, I apologise for not replying sooner but I did not receive email notification from the forum that a reply had been posted!! aaaargh Few more questions which I hope you can help me with 1. I can see the topic NaTopC00 and can see that your view from the PLC shows a scope of the same name which raises the question... Do you have a picture from the System Management Console (SMC) showing the full structure which connects you to your PLC and then onto your tags. I am still a bit bemused by how to set up items in any kind of groups through a series of access names. From what I remember of OPC under InTouch it was a lot easier to substitute most of the path required to get to an item by using a topic name and then under the topic name within the configuration file you then set up most of the leaf structure. 2. I cannot see any way to export the RSLogix tag database whereby it includes the data type of the items within any UDT? It seems to me you have to open up the PLC database and get each items data type manually by looking at it. I was hoping I could export the PLC database such that it included all the info I need (name, data type etcc) so that it would be then fit for me to rework in EXCEL and ready for importing into the InTouch tag database 3. One thing that has me stumped is the InTouch documentation for the DASABCIP 4.0 server says you can read a contiguous block of elements in an array as follows <Tag_Name>[<element_X>],L<number_of_items_#> Does this mean that my Intouch tag can look something like Tagname[0] ,L20 Thanks again for taking the time. I do appreciate it I have double checked and i have checked for email notification but i will be sensible enough to check back regardless!! Tony
  5. Understanding that the PLC database can hold Arrays defined by the user how do i then construct the item reference in my Intouch tag field to get to elements of that array? Is there a sample Intouch CSV export file I could look at coupled with a PLC tag database export to see how you link the Intouch tag to the PLC database item in a UDT All relevant help appreciated