10/28/2020 8:55 PM | |
Joined: 8/28/2020 Last visit: 4/15/2022 Posts: 1 Rating: (0) |
hi everyone. i want to connect ABB acs800 driver to plc 314c 2PN/DP through profibus dp and the PLC as master dp. I have done this with other CPU (S7 1215) just as it's mannual. I'm using tia portal v15.1. but in the case of 314 cpu there is a problem: when i configure dp interface in 314 cpu it display " No system constant available" in system constant and I don't know how to solve it. I took pictures of both CPUs which is in plc.zip and you can see differences. this is necesary for addressing of driver and using ABB function blocks. I'll be wondered if anybody could help me. thanks Attachmentplc.zip (147 Downloads) |
10/28/2020 11:00 PM | |
Joined: 9/27/2006 Last visit: 9/21/2024 Posts: 12282 Rating: (2684) |
Hello mehrplc; As in other many details, the S7-300 and S7-400 differ from the S7-1200/1500 families in the fact that they do not use system constants: See this quote from this article: https://support.industry.siemens.com/cs/ww/en/view/78782835 "Unlike S7-300/S7-400, in which the hardware and software components are identified through logical addresses or diagnostics addresses, in S7-1200/S7-1500 the identification is via the system constants. All the hardware and software components (like interfaces, modules, OBs, ...) of the S7-1200/S7-1500 have their own system constants. The system constants are generated automatically when the device configuration is created for the central and remote IOs. The system constants are needed as parameters on blocks, for example for the reading and writing of consistent user data for Siemens devices and third-party devices. Unlike S7-300/S7-400, in the S7-1200/S7-1500 the associated system constants of the input and output areas of the module are used for addressing and not the logical start address of an IO area." One option would be to look at the ABB drive library for TIA Portal; have you downloaded the latest version (v1.3)? You can download the zip file and manuals here, :https://new.abb.com/drives/software-tools/drive-manager-for-simatic Hope this helps, Daniel Chartier |
Last edited by: dchartier at: 10/28/2020 23:22:04 |
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