Posted 22 Jun 2017 What does it mean when there is @ before a symbol? I have a MOVL(498) with @E0_32214 to E0_32030. Don't know what the @ does before the E0_32214. Share this post Link to post Share on other sites
Posted 22 Jun 2017 When the conditions are true before the @MOV, the @MOV is executed for one PLC scan only. The conditions must be false and then true again for the @MOV to happen again. Above is not the right answer to dalt_Hub's question. See Mendon Systems below. Share this post Link to post Share on other sites
Posted 22 Jun 2017 The @ symbol before a DM or EM address can also be used to specify a binary (decimal) indirect address. For example: If E0_1000 contains &25 then MOV #FF @E0_1000 moves FF hex into E0_1025. Share this post Link to post Share on other sites
Posted 22 Jun 2017 Totally missed where he said that the @ symbol was used. You are right Dick. Share this post Link to post Share on other sites
Posted 22 Feb 2020 If I have a @SUB(31) instruction, does the @ indicate a single-scan condition, as Jay mentioned above? Share this post Link to post Share on other sites
Posted 23 Feb 2020 Yes. If the@ symbol is in front of a function (@SUB(31)), then it will only execute for one scan. 1 person likes this Share this post Link to post Share on other sites