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3/1/2011 10:35 PM | |
Posts: 89 Rating: (1) |
Hi, I have 3 questions about software redundnacy. I Have 2 CPUs 315 pn/dp with 2 CP343-1. The redundant link is made with CP343-1 (ISO ON TCP Connection). My 1st question is the ammount, of redundnant data, that i can transfer from master CPU to Standby? In OB 100 i set DB_NO=50 and DB_NO_LEN=25, so i transfer 25 DBS from master to Standby CPU in 5-6 secs. The Volume of those DBs is about 18700 bytes. I have no error in CPU and everything seems to work fine. Online the DB2 is about 18400 bytes and DB3 is about 18400 bytes. At Manual software redundnacy for simatic S7 chapter 6.1 page 49 says tha Valid maximum volume of redundnant data to be transfered is 8kbytes for S7-300. This It would be problem for me? So far i didnt find any problem or (Valid maximum volume of redundnant data to be transfered is 8kbytes for S7-300) it means something else that i dont understand? [schnippschnapp] the other questions are splitted to when i manually create a profibus error at the master CPU, the satndby CPU becomes master but the wincc dont switch the connection after the profibus error. when i unplug the ethernet cable from the master CPU, the wincc switch the connection and looks at the standby CPU. The master CPU still remain master (it doesn''t change) and the wincc looks the standby CPU. Thang you |
Last edited by: O_Moderator at: 3/3/2011 10:07 AMnew subject after splitting |
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3/12/2013 12:55 PM | |
Posts: 8 Rating: (0) |
Hello I have also same type of problem... Please Give solution. Thanks Manoj |
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