12/8/2019 10:27 PM | |
Joined: 9/27/2006 Last visit: 9/23/2024 Posts: 12282 Rating: (2685) |
Hello ST85; Something is confusing in your post. Here is the description of your EM 277 module: 6ES7277-0AA22-0XA0 As Profibus-DP slave module, the EM 277 cannot use the USS/Modbus library to set up communications. These libraries use the integrated ports of he CPUs, which could be a problem if the ports are already connected to your HMI panels. I suggest you look at the S7-200 system manual, especially the chapters on networking (you will find much information on the EM 277 there) and the individual sections on USS and Modbus RTU communications. https://support.industry.siemens.com/cs/us/en/view/1109582 Hope this helps, |
Last edited by: dchartier at: 12/08/2019 22:30:31 |
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This contribution was helpful to2 thankful Users |
12/9/2019 12:14 AM | |
Joined: 9/27/2006 Last visit: 9/23/2024 Posts: 12282 Rating: (2685) |
Hello ST85; Good selection, the PPI network is supported by all S7-200, natively, so this should be relatively easy. Note however the NETR/NETW work as a point-to-point network, so you have to program one NETR/NETW exchange for each pair of S7-200 you want to include in your data exchange. You cannot program all the CPUs on the network to exchange together, it must be one on one. Note also that there is an available NETR/NETW instruction Wizard that can help uyou out in developping these instructions, if you so choose. The choice of using the Wizard or not is discussed in the following FAQ, along with samples for these instructions (also look in the S7-200 system manual, pages 84-85).: How is data exchanged between two SIMATIC S7-200 devices in PPI mode? https://support.industry.siemens.com/cs/ww/en/view/370000 Hope this helps, Daniel Chartier |
Last edited by: dchartier at: 12/09/2019 00:15:23 |
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12/18/2019 4:04 AM | |
Joined: 8/23/2019 Last visit: 8/29/2024 Posts: 58 Rating: (0) |
to dchartier thank you for your recommended, I tried contact to technical siemens at my country about how to solving my question last week. I need Libraries
I need them because I have project for industry 4.0 solution. so please would anybody can help me. Until now I doesn't have solution I m confusing, for application below so that's why I need libraries for S7-224XP of mine urgently Regards 7 Thanks Sahala
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