ErikSN

MrPLC Member
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Everything posted by ErikSN

  1. Hi, I was wondering if there is a way to limit the number of allowed on-line connections at a time to a PLC? Like can you somehow set in the PLC parameters that only 1 'connection' can be on-line in the device at a time? Thanks Edit: I'm referring to connections from the TIA portal - not HMI / ethernet connections and so forth
  2. Hi, I was wondering if it's possible to detect a changed/updated value in a data block even if the value remains the same as before. The reason I ask is because we have a SCADA system providing a setpoint for a temperature every x minutes. The value of the setpoint can remain unchanged for hours even days. However we still want the PLC to be able to detect wheather it's setpoint is updated every x minutes or not. Any good solutions? Thanks!
  3. Joe E. Thanks! Those seem like good options to confirm that comm between PLC and SCADA are up. Will look into it.
  4. Step7 on remote server

    Hi, I was wondering if anyone have experience with Tia Portal Step7 v.14 and Step7 Classic v.5.5 located on a remote server? We have several persons working on our PLC's. As it is they all have their own PC with Step7 + licenses. We were thinking about moving the software environment onto a server to reduce license and maintenance costs. Does anyone else have this setup? If yes do you have any tips or comments? Pros/cons? I already know now that you cannot autodetect/configure new devices from a remote server as the Step7 detection protocol doesn't work through a router. We can live with that. We need both TIA Portal and the Step7 Classic on the same server. Thanks