6/9/2009 4:54 PM | |
Posts: 62 Rating: (0) |
Hello Everyone, I build a redundant configuration project using help from the example project in step7. I haveno SF or BF and when i manually switch any of the PLC to stop the IM153 ACT LED switches over respectively. My prblem is i will like to use the bit from the work DB5 (DB5.DBX9.1) from both CPU's to tell the OS who is the master and reserve. I noticin the VAT table when i view the bit dbx9.1 the status doessome times. when it doesthevalue goes back to 0 after a few seconds. I have attached a screen shot of the VAT table showing the bits in the work DB5. This is the shot when Redundancy Safety PLC1 is master. you will notice that the both PLC is showing that it is master (DB5.DBX9.0 = 1). Thanks for all your help, Raymondk.... Attachmentredundant work db5 status1.zip (339 Downloads) |
6/9/2009 6:48 PM | |
Joined: 7/2/2008 Last visit: 9/30/2024 Posts: 928 Rating: (309) |
Hello Raymondk, I can see that your redundant link is not established. DB5.DBX9.5 is always ON which means that the redundant link has failed. Please look at the attached file that has been already extracted from SWR manual. For better support, it would be better to have a look at your HW configuration and User Program. Did you check diagnostic buffer of both CPUs? Check if there's any area length error. Double check FC100 parameters in OB100. Compile the program. Delete the whole user program from both MMC and download your project again on both CPUs and check DB5.DBX9.5 Best regards. H-H AttachmentSTATUS_WORD.pdf (405 Downloads) |
6/9/2009 7:28 PM | |
Posts: 62 Rating: (0) |
Thank you H-H, Attachmentredundant2.zip (352 Downloads) |
6/9/2009 11:47 PM | |
Joined: 7/2/2008 Last visit: 9/30/2024 Posts: 928 Rating: (309) |
Hello Raymondk, I can see now that you are using CP342-5 for redundant link. However, in your program you use blocks from XSEND_300 because I can see from block consistency that FB101 is calling FB103 while it should have called FB104. Remove XSEND_300 blocks and use software blocks from AGSEND_300 which is the suitable library for FDL connection. Best regards. H-H AttachmentAGSEND_300.pdf (394 Downloads) |
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