8/5/2013 1:18 PM | |
Joined: 11/25/2011 Last visit: 5/19/2023 Posts: 17 Rating: (2) |
Dear Experts, Currently am stuck with software redundancy issue where, 1. Two CPU:- 315-2DP 6ES7 315-2AH14-0AB0 (using Software Redundancy Lib v1.2) Redundancy Working Fine:- 1. Master CPU Stop. In all above cases redundancy works fine and after fault recovery redundancy link bit (DB5.DBX9.5) becomes healthy. (Normally correct operation) Problem:- This issue is not observed when only 1 IM is used for the configuration, i.e. the redundancy link bit recovers to healthy status. (Now, instead I want to use 2 nos. of IM Racks. ) I also tested by interchanging addresses of IM1 (now addressed 4) & IM2 (now addressed 3), in this case redundancy works fine for IM2 fail condition. But IM1 fail condition has same problem of redundancy link not coming back to healthy status. (for this next Profibus Address i.e. 4 ). Something similar has been noted on this thread [Software Redundancy ET200M switch over at active CPU power off], but no solution was given since then . Hope someone has had a similar issue, and found the solution. |
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8/6/2013 3:12 PM | |
Joined: 10/7/2005 Last visit: 9/26/2024 Posts: 3023 Rating: (1054)
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Hello Ether Pin interesting problem you I must say and good on you for providing a detailed description of it. While I don't have smoking gun, I wonder if any of the following applies: 1.) Areall outputs in one contiguous area? (they must be and this applies from the first/lowest output address inone ET200M to the last/highest output address in theother ET200M) 2.) You say that it works ok if you configureonly one ET200M. To do this test (and then go back to the full system), you will need to have changed the "PIO_FIRST" and"PIO_LAST" parameters of FC100 "SWR_START". 2.a) Can you confirm that you did change these values accordingly 2.b) If so, did you afterwards delete the three "background" SWR DB's in the PLC (see FC100 Parameters "DB_WORK_NO", "DB_SEND_NO"and "DB_RCV_NO")? These DB's are created only once on startup and any change to FC100 parameters requires these to be recreated(and unfortunately requires a manual online deletion of them first). I hope this helps and please let us know what you find |
Cheers |
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This contribution was helpful to2 thankful Users |
4/21/2016 8:52 AM |
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Joined: 2/29/2016 Last visit: 3/12/2024 Posts: 100 Rating: (1) |
My problem got solved to! |
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