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  1. #1
    Join Date
    May 2011
    Posts
    0

    Question Sinumerik 840C, Sinumerik 840D

    Hello,
    have Sinumerik machines connected directly with computer via serial cable RS232 (COM port). I would like to write my own windows program to be able monitor the machine.
    Does anybody has any experience in this area? I believe there has to be an interface for communication between PC and Sinumerik via COM port, but I have no idea where to search for it

  2. #2
    Join Date
    Feb 2009
    Posts
    60
    840 C and 840 D use differant interface for PC. 840C has TTL port for itself S5 PLC. You can use 9-25 cable and you can connect direct from comport to system. You can see PLC networks and can do modification. at the same time you can use PC-IN program for backup part program and other some machine parameters but I don't prefer PC-IN program for 840C. Always I use valitek casette system for 840C all system backup.

    840 D has MPI/DP systems for connecting integrated PLC S7-300. You can not connect direct from comport. Must be have MPI/DP converter or Siemens PG. Can use MPI/DP port on NC module for connection PLC. Some Sinumerik HMI software has Simatic Manager program.

    If you want to have all 840D system backup (NC+PLC+HMI) first you must start backup from NC to HMI HDD. [NC+PLC+HMI >> HMI HDD]. after to this you can start backup from HMI HDD to ethernet or USB (to out of HMI).

  3. #3
    Join Date
    Nov 2009
    Posts
    2
    where can i find valitek casette system?

  4. #4
    Join Date
    Sep 2021
    Posts
    8

    Re: Sinumerik 840C, Sinumerik 840D

    Friends, tell me how to properly rotate the spindle of the sinumerik 840C turning and milling machine in the milling mode by more than 450 degrees. And at the same time indicate to him the direction of rotation?

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