9/21/2020 12:14 PM | |
Joined: 9/27/2006 Last visit: 10/15/2024 Posts: 12287 Rating: (2685) |
Hello Sanket; There are 2 ways you can connect a Profibus-PA field device (instrument) to a S7 CPU. - you can use a PA coupler (FDC 157-0) directly connected to the Profibus-DP master to connect the PA instrument. In that case you do not configure the FDC 157-0 in the Profibus-DP configuration, you use the instrument's gsd file (PA) to set it up on the Profibus configuration, but the whole Profibus-DP network will have to be brought down to a speed of 45,45 kB to accommodate the PA slave. What error messages are you receiving when you attempt this connection? - combining a IM 153-2 with a FDC 157-0 is actually the basis of a DP/PA link, if you use a special rail and active bus modules; see the following FAQ on the DP/PA link construction: https://support.industry.siemens.com/cs/ww/en/view/51678187 The DP/PA link is required if you do not want to slow down the Profibus-DP network to accommodate a PA slave, and you want to decouple the DP and PA networks: the PA elements will run at their own speed while you can run the DP side to up to 12 MB. To do this, the DP/PA link must be seen as a single DP slave, and (in TIA Portal, as in any 3rd-party DP master) you must use the GSD-tool to integrate the PA slave gsd files to the gsd file the DP/PA link presents to the master: https://support.industry.siemens.com/cs/us/en/view/79159361 Tell us if these links provide enough information to help you in this project, if not show us screenshots of the issues or error messages you get. Hope this helps, |
9/21/2020 5:15 PM | |
Joined: 9/27/2006 Last visit: 10/15/2024 Posts: 12287 Rating: (2685) |
Hello Sanket; For some reason it seems I attached the wrong link to one of my suggested documents this morning. Here is the corrected version, which you might find more useful: How do you configure the DP/PA link in the external master or in STEP 7 (TIA Portal)? https://support.industry.siemens.com/cs/ww/en/view/79159361 In addition, this document contains some very important information for the generation of the final gsd file for the DP/PA link(see the screenshot below): How do you connect the IM 157/IM 153-2 in the DP/PA Link to an external master or a SIMATIC S5? (GSD tool) https://support.industry.siemens.com/cs/ww/en/view/26562190 Now: to setup the gsd file for the DP/PA link, you never point to the FDC 157-0, as I said earlier it is never configured (no Siemens coupler ever is...). In the same directory where you have dowloaded the GSD tool .rar file, download the gsd file for each PA instrument you will integrate in the GSD file for the DP/PA link in the same directory. The first gsd file in the directory will be for the first instrument, the second gsd file for the 2nd instrument... in that order. Normally we ordered them to represent the order in which they are physically connected to the PA coupler. Then start unpacking the GSD-Tool file, it will integrate every instrument gsd file that will be found in the initial GSD-tool directory. Then follow the further steps as explained in the link. This should eliminate the error you have from introducing the FDC 157-0 in the GSD tool. Hope this helps, Daniel Chartier |
Last edited by: dchartier at: 09/21/2020 17:17:12 |
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10/15/2024 12:16 PM | |
Joined: 7/30/2024 Last visit: 10/15/2024 Posts: 237 Rating: (4) |
New question published by AutomationExpertNamibia is split to a separate thread with the subject IM153-2 not visable on the hardward config, only on DP network from the cm1542-5. Best regards |
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