8/27/2015 9:50 PM | |
Joined: 1/15/2009 Last visit: 4/19/2024 Posts: 316 Rating: (40)
|
Hi @L4N, While your question is a good one, may I ask a few questions (in case both of those types are not the best solution for your application)? What type of controllers are you communicating between, are both single CPUs, is one redundant, are both controllers redundant? What PCS 7 version are you programming with? These are important because, if the CPUs are both Single, or both redundant and its PCS 7 V7.1 or higher, you can do AS-Wide interconnections from one CFC directly to the other CFC (across the CPUs). If one CPU is single and the other is redundant, it would be best to use the PCS 7 Industry Library (if you are version V8.0 or higher). If before V8, then you may require an additional library that handles the redundancy communication (https://www.industry.siemens.com/services/global/en/it4industry/products/simatic_add_ons/pcs7_treiberbausteine/pages/default_tab.aspx?HTTPS=REDIR, S7-300 /400 Kom). If both CPUs are single, and your PCS 7 version is prior to V7.1, then yes, the B or AG send/receive is applicable. They both are very similar and call SFC58 and SFC59, where as only the BSend/Recv use SFC 20 as well. I have always used BSend/Receive, and have not had problems. But maybe another user can provide more clarity. |
The best location for all PCS 7 content (manuals, guides, application notes, FAQs, and videos). |
|
This contribution was helpful to1 thankful Users |
Follow us on