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Cosy 141 serial port documentation

Comments

13 comments

  • Tim Beaulieu

    Hello,

    I think this might be what you're looking for:

     

    image
     

    vipa.com

    ig-0010-00-en-ewon-cosy-141.pdf

    1559.59 KB

     
     

    -Tim

     

     

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  • KLarramore

    Awesome thanks! Is there a manual for establishing serial connection specifically to an S7-200?

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  • Tim Beaulieu

    It looks like these are the options with an S7-200

     

    image
     

    This might be useful for you. I don't think it was specifically written for a 141 though.

    1315753.pdf (1.7 MB)

     

     

     

     

     

     

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  • KLarramore

    So, reading the two documents you've sent me, I've found a (potential) discrepancy. It seems like the pinout should be:
    eWON > S7-200
    3 > 8
    5 > 5
    8 > 3

    I got to this based on cross-referencing the below two pinouts:
    Siemens S7-200 serial pinout

    However, looking at the latest document you sent me, it shows a straight-through pinout:

    eWON to s7-200 pinout

    Which should I use and why?

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  • Tim Beaulieu

    Hello,

    Sorry it does look like there's some conflicting information about which side is A and which side is B. Unfortunately I don't have one of these devices to test which is correct currently, but would it be possible to test both wirings and check which one seems to be reading?

    -Tim

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  • Tim Beaulieu

    If not I can try and escalate this with a colleague in Belgium tomorrow morning and see which should be the correct pinout

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  • KLarramore

    Working on that now. Unfortunately it's a device that's already out in the field. It doesn't look like the straight through cable is correct though (that's the one that we made originally). We're soldering up the crossover one now, and soon as that gets made I'll test it out here in the shop before sending it out. Will keep you updated.

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  • Tim Beaulieu

    Ok thanks, I'll send my colleague a message and see if he can give me some info on this as well

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  • KLarramore

    Ok, so it looks like neither configuration is working, which means that I must be doing something else wrong (though I still do need to know which pinout is correct).

    So I setup the eWON as normal, and I can connect to it just fine. Then I go to the Gateway wizard, and select ISOTCP to PPI (Siemens S7-200). Then I put in the COM setup information that I get from the Step7 software used to program the S7-200. Then I go to the Communications settings in Step7, and change the PG/PC interface to TAP-Windows Adapter V9, and then search for the eWONs LAN address.

    That should allow me to remotely connect to the PLC, correct? Am I missing a step?

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  • Tim Beaulieu

    My colleague let me know that the second picture should be the correct one.

    image

    I've been looking around trying to find an example of setting up a Cosy 141 using serial with S7200 but have been having some issues finding information. I think that ISOTCP might be limited to ethernet connections.

    I'm going to check with a colleague in Belgium tomorrow to find out more about this

    -Tim

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  • KLarramore

    Any update on this?

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  • Tim Beaulieu

    I haven't heard anything back yet, I'll try and ping them again

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  • Tim Beaulieu

    They are saying that it should be possible by using this document as a template with the PPI connection:

    aug-0018-00-en-s7-200-ppi-multimaster-remote-connection.pdf

     

     
     

     

     

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